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Does Freer Trade between Taiwan and Developing Countries Worsen Wage Inequality in Taiwan? Chen-yuan Tung School of Advanced International Studies Johns Hopkins University 1308, N. Taft St. #8, Arlington, VA 22201, USA E-mail: [email protected] Tel: 703-5224051 Paper for delivery at the 2000 Taipei International Conference on Industrial Economics, sponsored by the Institute of Economics, Academia Sinica (IEAS) from June 15-17, 2000. Introduction From the 1950s through the 1970s, Taiwan was a developing country exporting unskilled-labor-intensive goods and raw material to developed countries while importing capital-intensive goods from them. Since the mid-1980s, Taiwan has become a relatively developed country1 and exported mainly capital-intensive goods. Between 1985 and 1998, the share of exports of heavy-chemical products to total exports increased from 36.5% to 64.4%. In the same period, the share of technological products to total exports increased from 27% to 49.8%. According to World Bank classifications, the share of intermediate products, machinery, and transportation equipment to Taiwan's total exports increased from 48.4 % to 83.9 % between 1987 to 1998. By contrast, the share of consumer goods decreased from 45.2 % to 14.2 % over the same period. In addition, since the mid-1980s, Taiwan has shifted some of its imports from developed countries to the Southeast Asian countries and to China. In 1986, 67.4 % of Taiwan's imports came from developed countries (OECD-7)2. By contrast, only 5.5 % of Taiwan's imports came from developing countries (ASEAN-43 and China4) in 1986. In 1997, 59 % of Taiwan's imports came from the OECD-7 while 11.9 % came from the ASEAN-4 and China. Coincidentally, China adopted its opening-up policy in the late 1970s and soon became a very active exporter in the international market. China's total two-way trade 1 2 3 4 In 1997, Taiwan’s per capita GNP was $13,198. The OECD-7 includes the US, Canada, Japan, Germany, United Kingdom, France, and Netherlands. The ASEAN-4 includes Malaysia, Indonesia, Thailand, and Philippines. In 1997, Malaysia’s per capita GNP was $4,283, Indonesia’s $979, Thailand’s $2,463, and the Philippine’s $1,166, all much less than Taiwan’s. The China excludes Hong Kong. China’s per capita GNP in 1997 was $738, much less than Taiwan’s. 1 increased from $14.8 billion in 1978 to $325.1 billion in 1997. China's exports grew especially fast, rising from $7.2 billion in 1978 to $182.9 billion in 1997, far exceeding Taiwan’s 1997 exports of $122.1 billion. In the late 1980s, Taiwan began to allow indirect trade across the Taiwan Strait.5 Taiwan's exports to China increased rapidly from $0.2 billion in 1988 to $22.5 billion in 1997. However, Taiwan's imports from China increased only slightly from $0.5 billion in 1988 to $3.9 billion in 1997. From an economic perspective, Taiwan unilaterally restrains imports from China mainly to protect domestic industries and prevent wage inequality.6 Therefore, there is a potential for a huge increase in Taiwanese imports from China if Taiwan adopts a freer trade policy, especially after both Taiwan and China join the WTO, which could occur by late 2000. It is important for Taiwan to examine whether or not freer trade between Taiwan and developing countries (especially China) will worsen wage inequality in Taiwan. Literature Review Almost all of the economic literature7 on the relationship between trade and wage inequality has been prompted by the experience of wage inequality in the developed countries. Lawrence and Slaughter (1993) correlate changes in import prices with the 5 6 7 Since the early 1980s, the majority of trade between Taiwan and China has been conducted through Hong Kong. Xiangkai Lin, Tufa Wang, Bozhi Chen, Taiwan yu Zhongguo Jingmao Guanxi Baipishu [White Paper on the Economic Relations Between Taiwan and China] (Taipei: The Nation-Building Union of Taiwan, 1998), pp. 7-22. Cline has given a comprehensive review of the literature on this issue. See Table 2.3 in his book for alternative estimates of the impact of trade on rising US wage inequality. William R. Cline, Trade and Income Distribution (Washington, D.C.: Institute for International Economics, 1997), pp. 35-150. 2 share of production workers across industries, where production workers are assumed to be less skilled than non-production workers. They dismiss trade as a major contributor to relative wage changes in the 1980s, since international prices moved in the wrong direction from those predicted by the Stolper-Samuelson (SS) theorem for the observed changes in relative wages. Indeed, both import and export prices indicate that the relative price of labor-intensive products actually increased slightly during the decade. In addition, they find that a pervasive shift in U.S. manufacturing toward the increased use of non-production labor despite the rise in its relative wage. They argue that "this shift suggests that technological change (biased toward non-production labor) has been the more important pressure on wages for production workers."8 Wood (1994) argues that the growth of manufacturing exports from the South can explain not only the rise in earnings inequality in the US but also the trend toward higher joblessness in Europe. Wood argues that standard factor content analyses understate the effect of trade on employment. The net impact of North-South trade on manufacturing employment and the skill intensity of manufacturing employment in the North is roughly ten times what the conventional estimates imply. Once the proper corrections are made, he argues, "up to 1990 the changes in trade with the South had reduced the demand for unskilled relative to skilled labour in the North as a whole by something like 20%."9 Wood recognizes that biased technological change can account for many of the same phenomena he attributes to North-South trade. Nevertheless, he asserts that the time pattern, the general magnitude, and the pattern of cross-country variation of increased inequality and joblessness favors the trade explanation. 8 9 Robert Z. Lawrence and Matthew J. Slaughter, "International Trade and American Wages in the 1980s: Giant Sucking Sound or Small Hiccup?," Brookings Papers on Economic Activity, no. 2 (1993), p. 209. Adrian Wood, North-South Trade, Employment and Inequality: Changing Fortunes in a Skill-Driven World (Oxford: Clarendon Press, 1994), p.11. 3 Using the same methodology, Wood (1995) suggests that "trade is the main cause of the problems of unskilled workers" and that "conventional factor content results understate the extent to which trade shifts relative demand against unskilled workers." He argues that as of 1990 "trade [between developed countries and developing countries] lowered the economy-wide relative demand for unskilled labor by about 20% [in developed countries]." In addition, he contends that unskilled workers in developed countries will not be hurt much by major new entrants (e.g., China and India) into the world market for low-skill-intensive manufactures, simply "because these goods are no longer produced in developed countries."10 However, Burtless (1995) is skeptical of Wood's conclusion. He points out that there is an apparent shrinkage in demand for less-skilled U.S. workers across a range of industries, including those that do not produce goods and services that are traded internationally. Firms which do not produce internationally traded goods and services should take advantage of the declining price of less-skilled workers by hiring more of them. The fact that they instead adopt techniques that use skilled labor relatively more intensively suggests that biased technical change or some other development has reduced their demand for less-skilled workers. He argues that "international trade cannot explain the reduced appetite for less-skilled workers in these industries."11 Burtless (1996) also concludes in a later article that "international trade, it seems, has not been the decisive factor in the trend toward greater earnings inequality." He believes that "the leading 10 11 Adrian Wood, "How Trade Hurt Unskilled Workers," Journal of Economic Perspectives, vol. 9, no. 3 (Summer 1995), pp. 57-80. Gary Burtless, "International Trade and the Rise in Earnings Inequality," Journal of Economic Literature, vol. 33, no. 2, June 1995, p. 813. 4 explanation for increased wage inequality is changes in the technology of production."12 In addition, Burtless, Lawrence, Litan, and Shapiro (1998) reach the same conclusion by examining the data from 1969 to 1995. They argue that "the wages of less-skilled workers have suffered both relative and absolute declines primarily because employers throughout the economy have shown an increased preference for hiring workers with more advanced skills. It appears that immigration has played an important contributory role in depressing the earnings of the less skilled, and thus in aggravating income inequality, but trade and outward foreign investment have been much less important factors in these developments."13 Wood (1998) adjusts the conclusion in his recent paper. He believes that "most (between two-thirds and three-quarters) of the rise in the relative demand for skilled labor during the past two decades was caused by ..... skill-biased technical changes (emphasis added), loosely defined to include factoral and sectoral biases in production methods, product innovation and shifts in the composition of final demand. At the same time, ..... most of the acceleration in the growth rate of the relative demand for skilled labor in the past two decades above its trend of the previous few decades, and hence the rise in labour market inequalities, was caused by globalization (emphasis added)."14 Freeman (1995) discusses the immiseration of low-skill workers in the U.S. and Europe. He emphasizes that both the rise in joblessness in Europe and the rise in earnings 12 13 14 Gary Burtless, "Worsening American Income Inequality: Is World Trade to Blame?," Brookings Review, vol. 14, no. 2 (Spring 1996), p. 31. Gary Burtless, et. al., Globaphobia: Confronting Fears about Open Trade (Washington, D.C.: Brookings Institution, 1998), chapter 4, p. 88. Adrian Wood, "Globalization and the Rise in Labour Market Inequalities," The Economic Journal, no. 108 (September 1998), p. 1465. 5 inequality in the U.S. reflect the same phenomenon -- a relative decline in the demand for less skilled workers. He concludes that trade does matter, but "other factors have been more important than trade in the well-being of the less skilled,"15 including technological changes. Lawrence and Evans (1996) use both a net factor content analysis and a small simulation model to explore the impact on the U.S. labor market of a fivefold increase in imports of manufactured goods from developing countries. They find that "while trade could effect major shifts in the structure of U.S. production, its impact on the wage structure is unlikely to be large. The basic reason for this small impact is that manufacturing in general, and those sectors potentially vulnerable to developing country competition in particular, comprise a relatively small share of total employment. Once the US economy is driven to specialize fully in skill-intensive products, trade no longer widens the relative wage gap."16 Baldwin and Cain (1997) investigate three suspects to account for the observed shifts in U.S. relative wages of less educated compared to more educated workers from 1967 to 1992: increased import competition, changes in the relative supplies of labor of different education levels, and changes in technology. For the period from 1980 to 1993, they conclude that "increased import competition cannot account for the rise in wage inequality among the major education groups, although it could have contributed to the decline in the wages of the least educated workers. Instead, support is found for technical progress that is reducing demand for less-educated labor and is more rapid in some 15 16 Richard B. Freeman, "Are your Wages Set in Beijing?," Journal of Economic Perspectives, vol. 9, no. 3 (Summer 1995), p.31. Robert Z. Lawrence and Carolyn L. Evans, "Trade and Wages: Insights from the Crystal Ball," National Bureau of Economic Research, Working Paper No. 5633, June 1996, pp. 2-3. 6 manufacturing sectors intensively using highly educated labor as the dominant force in widening the wage gaps...."17 Using the aggregate factor proportions approach18, Borjas, Freeman, and Katz (1997) conclude that the impact of increased trade with less-developed countries on the labor market does not explain much of the increase in the overall wage inequality in the United States. According to their estimate, U.S. immigration and trade with less-developed countries accounts for no more than 10% of the rise in wage inequality between skilled labor and unskilled labor from 1980 to 1995. Moreover, they find that immigration has a larger impact on less educated workers than does trade.19 Harrigan (1998) creates a flexible and empirical general equilibrium model of wage determination by analyzing data on prices and quantities of imports, output, and factor supplies from 1967 to 1995. He concludes that wage inequality has been partly driven by changes in relative factor supplies and relative final goods prices. In contrast, imports have played a negligible direct role. In other words, he argues, "the causes of increased wage inequality are mainly domestic rather than foreign."20 Haskel and Slaughter (1999) estimate the effects of trade and technology on U.K. wage inequality. They find that "changes in prices were the major force behind the rise in inequality in the 1980s." However, they find "only a weak link between domestic price 17 18 19 20 Robert E. Baldwin and Glen G. Cain, "Shifts in U.S. Relative Wages: The Role of Trade, Technology and Factor Endowments," National Bureau of Economic Research, Working Paper No. 5934, February 1997, abstract. George Borjas, Richard Freeman, and Lawrence Katz, "How Much Do Immigration and Trade Affect Labor Market Outcomes?," Brookings Papers on Economic Activity, no. 1 (1997), pp. 39-41. Ibid, pp. 62-3. James Harrigan, "International Trade and American Wages in General Equilibrium, 1967-1995," National Bureau of Economic Research, Working Paper No. 6609, June 1998, p. 16. 7 changes and international price changes."21 The most commonly invoked theory to explain the link between trade and wage inequality is the Heckscher-Ohlin (H-O) model. The Stolper-Samuelson (SS) theorem asserts that if there are constant returns to scale and if both goods continue to be produced, a relative increase in the domestic price of a commodity will raise the real return to the factor of production that is used intensively in producing that commodity and reduce the real return to the other factor. The SS framework suggests that rising wage inequality is caused by a trade-induced rise in the price of skilled-labor-intensive products relative to unskilled-labor-intensive products. Slaughter (1998) questions some critical assumptions of the SS Theorem from both inside and outside the model, such as price-taking assumption, short-run frictions, factor endowment change, and within-group inequality. First, he points out the most important limitation to research within the basic H-O model is the lack of understanding about how the various exogenous forces attributable to international trade affected actual product price, such as technological progress, trade barriers, tastes, and endowment. Second, he contends that the H-O Model is a long-run theory and price shocks might not generate H-O wage effects over the same time horizon. Third, he asserts that national endowment changes do appear to affect factor prices. Fourth, in additional to "between-group" wage inequality in the H-O model, he emphasizes the importance of "within-group" wage inequality, i.e., inequality among observationally equivalent workers, which accounts for about half of the overall rise in U.S. wage inequality.22 21 22 Jonathan Haskel and Matthew J. Slaughter, "Trade, Technology and U.K. Wage Inequality," National Bureau of Economic Research, Working Paper No. 6978, p. 32. Matthew J. Slaughter, "International Trade and Labour-Market Outcomes: Results, Questions, and Policy Options," The Economic Journal, no. 108 (September 1998), pp.1456-1460. 8 Overall, despite unresolved methodological differences, Slaughter concludes that "the balance of evidence from both the SS studies and the factor-content studies reaches the same conclusion that trade has contributed relatively little to rising U.S. skill premia."23 Based on a balanced reading of the existing literature, Cline concludes that international influences contributed about 20% of U.S. wage inequality in the 1980s.24 Based on her edited volume, Collins concludes that globalization (including trade and immigration) may explain 1 to 2 percentage points of the 18 percentage point overall change in wages for high school-educated workers relative to those who are college educated.25 Theoretical Analysis Generally speaking, there are two models based on the H-O assumptions to explain explicitly the relationship between trade Heckscher-Olin-Samuelson-Richardson and (HOSR) wage inequality: model the and Heckscher-Olin-Leamer-Wood (HOLW) model. The major assumptions of the H-O model are: First, there are two countries, two goods, and two factors. Second, markets are perfectly competitive and production is characterized by constant returns to scale. Third, both countries possess identical tastes and share the same technological opportunities. Fourth, factors are perfectly mobile 23 24 25 Matthew J. Slaughter, “International Trade,” p. 1456. William R. Cline, Trade and Income Distribution (Washington, D.C.: Institute for International Economics, 1997), p. 144. Susan M. Collins, "Economic Integration and the American Worker: An Overview", in Susan M. Collins (ed.), Imports, Exports, and the American Worker (Washington, D.C.: Brookings Institution Press, 1998), chapter 1, pp. 34-35. 9 between sectors but completely immobile internationally. The Heckscher-Olin-Samuelson-Richardson (HOSR) Model Based on the H-O model and SS Theorem, Richardson (1995) proposes a basic long-run, general-equilibrium model of trade, technology and wages. In the HOSR model, Richardson points out that five local factors might increase the volume of trade, including an opening of the economy, natural (endogenous) growth of the economy, any extra exogenous growth in the capital stock, exogenous sectoral technological change, and a shift in tastes (or demands). He argues that only an opening of the economy and exogenous sectoral technical change could increase wage inequality. The other three factors would have no effect on relative wages, though all affect the production mix, the volume of trade, and other variables. That is, relative factor prices under free trade are dictated solely by relative sectoral total factor productivity and relative goods prices. A graphical version of the HOSR model is presented in Figure 1. 26 The curved lines PPF0, PPF1c, and PPF1 depict production possibilities for a relatively developed economy like Taiwan between investment goods and other (or consumption) goods. The preexisting stock of capital, human, and technological capital is indicated by the lower extension of the diagram to an origin 00. Rays from that origin include all points where the ratio of capital stock to consumption is constant. Without trade, the original production possibility frontier is PPF0 and the original capital-consumption ratio is described by the ray going through c0. Richardson assumes 26 J. David Richardson, "Income Inequality and Trade: How to Think, What to Conclude," Journal of Economic Perspectives, vol. 9, no. 3, Summer 1995, pp. 36-44. 10 that the economy's production of (broad) investment goods exceeds the depreciation of its initial stock of (broad) capital, and the total capital stock grows. Then the production possibility frontier will shift out in the next period, and with the same investment-consumption ratio, this "closed" economy will be able to produce and spend at a point like c1 and PPF1c. In this model, the line through c0 and c1 in fact is the economy's expansion path -- its growth trajectory -- with no trade. Now consider the same with trade. Since the diagram is depicting a relatively advanced economy, like Taiwan, assume that its comparative advantage is in the investment goods sector, which is relatively capital intensive. The sector for other goods, consumption goods, will be assumed to depend more on unskilled labor. In the first time period, the economy starts on PPF0. With trade, the economy will produce at point b0, exporting its excess production of investment goods and importing its excess demand for consumption goods. The slope of the line b0a0 represents world relative prices for the two goods. As a result of trade, this economy is now at a0 rather than at c0 in first-period expenditure (acquisition): it has both more investment and more consumption. Thus, in the next period, the production possibility frontier will be shifted out further than in the previous example. On the new frontier, labeled PPF1, the country can produce at point b1 and trade at world market prices to enjoy the "acquisition point" a1 in the next period. This economy's reliance on trade increases both its consumption possibilities and its growth. The line through a0 and a1 represents the ratio between what the economy ends up consuming and investing in that time interval. The line through b0 and b1 (not shown in 11 the diagram) represents the growth trajectory of this economy with trade, in terms of what it produces. In the HOSR model, there are five local reasons why the volume of trade might increase. One is an opening of the economy, along a given production frontier; for example, the shift from c0 to b0. Second is the natural (endogenous) growth of the economy; for example, the shift from b0 to b1. A third reason is any extra exogenous growth in the capital stock relative to the labor force, say because of capital-augmenting technological change, which will tug PPF1 even further in the vertical direction. Fourth is exogenous sectoral technological change that is more rapid for investment goods than for other goods (that is, relatively faster total factor productivity growth in investment goods), which will also tug PPF1 vertically. Fifth is a shift of tastes (or demands) away from investment goods that will shift the a0a1 line in a southeast direction. Only two of these five local reasons for increased trade would shift relative wages in a way that would produce greater inequality -- the first and the fourth. The other three would have no effect on relative wages. An opening of the economy shifts relative product prices and thus changes the real return to labor. The old product prices would be represented by the tangent through c0, while the new relative prices would be shown by the line from b0 to a0. Increased openness to trade reduces the internal relative price of other goods and the unskilled labor they employ, shifting factors to the investment-goods sector. These insights are the roots of the SS theorem. 12 A graphic version of the SS theorem is shown in Figure 2.27 The dual of the production function for investment goods (I), PI (w, r), determines the isoprice curve labeled "PI = PI0", which indicates the combinations of the wage rate of unskilled labor, w, and the rental rate of capital, r, which are consistent with zero profits in producing I, given price PI0. The dual of the production function for consumption goods (C), PC (w, r), determines the isoprice curve labeled "PC = PC0," which indicates the combinations of the wage rate of unskilled labor, w, and the rental rate of capital, r, which are consistent with zero profits in producing C, given price PC0. The point of the intersection for the two isoprice curves, A, determines the wage rate, w0, and the rental rate, r0, which are consistent with the production of both commodities at the given output prices, PI0 and PC0. If the economy opens up to trade, the relative price of I will increase and the economy will export goods I and import goods C. An increase in the relative price of I is indicated by a shift of the isoprice curve for I from PI = PI0 to PI = PI1. This moves the point of the intersection between the two isoprice curves from A to B. The wage rate consistent with the combination of both commodities falls from w0 to w1, and the rental rate rises from r0 to r1. Since PI has risen and PC remains constant, it is clear that the wage rate has fallen relative to the prices of both commodities. Furthermore, since the rental rate associated with point J is the rental rate which is consistent with a constant ratio of r to PI, it is clear that the rental rate rises relative to the prices of both commodities. Therefore, an increase in the price of the capital-intensive commodity 27 Michael Mussa, "The Two-Sector Model in Terms of Its Dual: A Geometric Exposition", in Jagdish N. Bhagwati (ed.), International Trade: Selected Readings, second edition (Cambridge, Mass.: The MIT Press, 1987), pp. 55-60. 13 increases the return to capital in terms of both commodities and reduces the return to labor in terms of both commodities. To determine the effects of an increase in the relative price of the labor-intensive commodity, consider the move from B back to A. As a result, the wage rate rises in terms of both commodities, and the rental rate falls in terms of both commodities. Thus, as described in the SS Theorem, a relative increase in the domestic price of a commodity will raise the real return to the factor of production that is used intensively in producing that commodity and reduce the real return of the other factor. The SS framework (H-O model) suggests that rising wage inequality in Taiwan might be caused by a trade-induced rise in the price of skilled-labor-intensive products relative to unskilled-labor-intensive products after opening up trade with developing countries. Exogenous sectoral technological change will change the wage-rental ratio. The effects of exogenous technological change can also be shown in Figure 2. 28 In terms of the dual of the production function, technological advance means an outward shift of the isoprice curve; at any given output price, a firm can afford to pay more for its factor inputs and still maintain zero profits. The effect of a Hicks-neutral technological advance in the I (investment goods) industry is illustrated by the outward shift of the PI curve from PI = PI0 to PI = PI1 in Figure 2. It is necessary to reinterpret the P I = PI1 curve as the isoprice curve corresponding to a higher level of technical efficiency in I, rather than to a higher price of I. Therefore, any technological advance in I results in a generally non-homogeneous outward shift of the PI curve, and hence reduces the wage rate and 28 Ibid, pp. 60-61. 14 increases the rental rate. In contrast, any technological advance in C increases the wage rate and reduces the rental rate. As a result, if Taiwan experiences a technological advance in the investment goods sector, the wage-to-rental ratio will fall. Assume that Taiwan is a small country, therefore the international price ratio of investment goods to consumption goods is given. Natural (and endogenous) growth of the economy will not change the wage-rental ratio. In the broad growth of the economy from one production possibility frontier with free trade to another frontier with free trade -- that is, from b0 to b1 in Figure 1 -- there is no change in the relative prices of the two goods, which are set on the world market. Therefore, the relative factor rewards are constant. It’s the same for extra exogenous growth in the capital stock and a shift in tastes (or demand) away from investment goods. Because the international price ratio is given, there is no change in the rewards for the factors. To sum up, according to the HOSR model, relative factor prices under free trade are dictated solely by relative sector total factor productivity and relative goods prices, two of the five local reasons for increased trade. In the long-run equilibrium the other three reasons for increased trade would have no impact on relative wages. Therefore, increased trade between the developed and developing countries would not necessarily lead to wage inequality. The Heckersher-Ohlin-Leamer-Wood (HOLW) Model The theoretical discussion of the HOLW model is also based on fairly standard H-O 15 assumptions.29 In the H-O model, trade and wages are linked solely through changes in product prices. This linkage, known as the SS theorem, exists because the H-O theory assumes technology (that is, the production function for each good) to be given. Using the H-O model, with given technology (and tastes), Wood (1995) argues that there are two possibilities for changing domestic producer prices. One is a reduction of barriers to trade. A reduction in barriers, and the resulting expansion of trade, would thus lower the relative price of consumption goods in the developed country. The second force is a change in relative world supplies of skilled and unskilled labor. An increase of unskilled workers would raise the output and exports of consumption goods, and thus drives down the relative price of consumption goods on the world market and in the developed countries. The Simplest HOLW Model To explain the effect more precisely, consider a simple model with two countries (developed and developing), two factors (skilled and unskilled labor), and two goods (skill-intensive and labor-intensive goods). In Figure 330, the vertical axis measures the unskilled wage relative to the skilled wage, while the horizontal axis measures the number of unskilled workers relative to the number of skilled workers. Case 1: Autarky. The downward-sloping line dd is the relative demand curve for unskilled labor in a country where high barriers prevent trade. Wages are determined by 29 30 Adrian Wood, North-South Trade, pp. 41-2. This type of supply and demand curve diagram was invented by Edward E. Leamer and adapted by Adrian Wood. Adrian Wood, "How Trade Hurt," pp. 59-62. Edward E. Leamer, "In Search of Stolper-Samuelson Linkages between International Trade and Lower Wages," in Susan M. Collins (ed.), Imports, Exports, and the American Worker (Washington, D.C.: Brookings Institution Press, 1998), chapter 4, pp. 150-164. 16 the intersection of this demand curve with a supply curve, whose position depends on the country's endowments of skilled and unskilled labor. For example, with supply S1, as in Taiwan with few unskilled workers, the relative wage of unskilled labor would be at the high level, w0. Case 2: Diversified trade. The demand curve in a country completely open to trade is the line DD. It crosses the line dd at B on the horizontal axis: if it had this skill supply ratio, even an open country would not trade. The developed country must lie to the left of B because it has a relatively large supply of skilled labor. The line DD has two downward-sloping segments separated by a flat segment in the middle. This flat (infinitely elastic) segment covers the range of factor endowments in which a trading country would be "diversified" in the sense of producing both of the two traded goods. At this stage, the relative wage of unskilled labor in these two countries should be equal to w1 according to the factor-price equalization theorem with free trade.31 With a skill supply ratio S1, the relative wage of unskilled labor would fall from w0 to w1. After the initial reduction in wage rates, in this range of flat segment, changes in domestic labor supply, unless they are big enough to affect world prices, do not change wages. However, if a change in world labor supplies or a fall in trade barriers abroad were to lower the import price of consumption goods, the flat segment of the demand curve would shift down, as shown by the dashed line in the figure, and thus reduce further the relative wage of unskilled workers from w1 to w2. This is based on the SS theorem, which states that a relative decrease in the domestic price of consumption goods will reduce the real return to the unskilled labor, which is used intensively in producing 31 Because the HOLW model is based on the H-O theory, the factor-price equalization should apply to the free-trade situation with identical technologies and the same relative price for their outputs. 17 consumption goods. Case 3: Specialized trade.32 A trading country with few unskilled workers, as at S2, will produce no consumption goods and specialize in machinery plus the non-trade service. Since the machinery plus the non-traded service are skilled-intensive, the demand for the unskilled/skilled workers will fall. In this stage, the new demand curve DD is below the original curve dd. With a skill supply ratio S2, the relative wage of unskilled labor would fall from w3 to w4 after the opening up of trade. In a specialized country on a downward-sloping segment of the demand curve DD, changes in domestic labor supply do affect relative wages. For example, if the skill ratio S2 shifts to the skill ratio S1, the wage ratio will shift down from w4 to w1. By contrast, a fall in the world price of imported consumption goods would not affect the relative wage, w4, which is decided by the intersection of the demand curve, DD, with the supply curve, S2. To summarize, in a relatively developed country (such as Taiwan), with relatively few unskilled workers by world standards (that is, to the left of point B in Figure 3), opening trade with developing countries (to the right of point B) causes the relative wage of unskilled workers to be lower than it would be without trade, whether the outcome is diversified or specialized. In both cases, this happens because of a fall in the relative domestic price of consumption goods, which in both cases is reflected by a shift of the demand curve against unskilled labor. Finally, if the outcome is specialized, a fall in 32 Wood argues that the reduction of trade barriers has shifted developed countries from “manufacturing autarky” to specialization in the production of skill-intensive manufactures and reliance on imports from developing countries to supply their needs for labor-intensive manufactures. 18 world price of imported consumption goods would not affect the relative wage. The HOLW Model with More Goods, Countries, and Factors This model can be extended to include many goods (differentiated by skill intensity) and many countries (differentiated by skill level).33 Figure 4 is drawn on the same principles as Figure 3, but with six rather than two goods (and at least six countries). The open-economy demand curve, DD, instead of having one flat segment, has five, which alternate with downward-sloping segments. Countries whose relative skill supplies put them on a flat segment produce two goods, adjacent in skill intensity, while those on a downward-sloping segment produce only one good. As in a fully diversified country, small changes in labor supplies do not alter relative wages. However, larger changes in labor supplies do alter relative wages by moving the country to a different segment of DD. The effects of trade on relative wages remain the same as in Figure 3. In developed countries, to the left of B, a reduction in trade barriers shifts demand in favor of skilled labor and widens the skill differential in wages. The impact on wages is bigger for countries with a relative small supply of unskilled labor. For countries with intermediate skill supplies, in the vicinity of B, trade has a smaller effect on wages. In reality, the number of traded goods of differing skill intensity is very large. It is thus reasonable to approximate DD by a continuous line (shown with dashes in figure 4). This multiple-goods formulation emphasizes three important points. First, the open 33 Adrian Wood, "Openness and Wage Inequality in Developing Countries: The Latin American Challenge to East Asian Conventional Wisdom," The World Bank Economic Review, vol. 11, no. 1, pp. 36-38. 19 economy demand curve for unskilled labor DD is more elastic than the closed economy demand curve dd, so that changes in factor supplies have smaller effects on relative wages. For example, if unskilled/skilled workers ratio shifts from S3 to S4 in Figure 4, with closed economy demand curve for unskilled labor dd the wage inequality will increase by (w2 - w0) and with open economy demand curve DD the wage inequality will increase by (w3 - w1), where (w2 - w0) is larger than (w3 - w1). Nevertheless, changes in factor supplies are generally likely to have some effect on relative wages. Two, greater openness (trade) between Taiwan and developing countries will pivot the open economy demand curve from D1D1 to D2D2 where D2D2 is more elastic than D1D1. (See Figure 5.) This leads to further worsen wage inequality in Taiwan, where the relative unskilled/skilled wage rate falls from w1 to w2. Three, the further reduction of goods price would not worsen wage inequality in Taiwan if the open economy curve DD is a straight line and thus Taiwan will completely specialized in the relative skilled-intensive goods. The elasticity of the open economy demand curve totally depends on the volume of trade instead of the price.34 Empirically, Wood uses the approach of the factor content35 of trade to calculate the amounts of skilled and unskilled labor used to produce a country's exports and compare these with the amounts of skilled and unskilled labor that would be required to produce domestically the goods that the country imports. If the ratio of skilled to unskilled labor 34 35 In his empirical study, Wood argues that the time pattern of relative price changes in the US does not match that of relative wage changes, particularly in the 1970s. In Europe, moreover, there was no general fall in the relative producer prices of labor-intensive goods, either in the 1970s or in the 1980s. Adrian Wood, “Globalization,” p. 1472. Adrian Wood, "How Trade Hurt,” pp. 64-72. Adrian Wood, "Openness and wage Inequality,” pp.38-40. Adrian Wood, “Globalization,” pp. 1469-1471. 20 is higher for exports than for imports (e.g., Taiwan), then increased openness to trade should raise the relative demand for, and so the relative wages of, skilled workers. To sum up, the HOLW model suggests that greater openness to trade (increased trade) between Taiwan (a relative developed country) and developing countries tends to reduce the demand for unskilled, relative to skilled, labor and thus to worsen wage inequality. By contrast, the HOSR model argues that increased trade would not necessarily lead to greater wage inequality. In the HOLW model, wage inequality will increase by greater volume of trade; but in the HOSR model, wage inequality will hinge on biased sector total productivity and export-import price ratio. Empirical Study The HOSR model predicts that two factors will worsen wage inequality: both biased technological progress and increase in export-import price ratio will worsen wage inequality. However, in the case of Taiwan, its wage inequality did not worsen from 1987 to 1996.36 (See Table 1.) In 1987, the average monthly earnings of employees with below college education was NT$12,755. College graduates earned an average of NT$23,503 per month. 37 The ratio of wage inequality was 0.84 [(23,503-12,755)/12,755]. Thereafter, the wage inequality lessened significantly through 1995. In 1995, the average monthly earnings of non-college graduates was NT$28,730 and that for college graduates was NT$44,770. The ratio of the wage inequality was 0.56. 36 37 Also, the unemployment rates in Taiwan did not increase after the mid-1980s, either. The unemployment rate was 2.9% in 1985 and 2.7% in 1986. After 1986, the rate fell significantly. It was 2% in 1987 and 1.7% in 1988. The average unemployment rate from 1988 to 1995 was 1.6%, although the unemployment rate increased to 2.6% in 1996 and 2.7% in 1997. Richardson and some other economists suggest differentiating those workers with, and those without, at least 12 years of education. J. David Richardson, “Income Inequality,” p. 44. 21 Nevertheless, in 1996, the wage inequality ratio worsened slightly to 0.62. Regarding the relative export-import price ratio, if we use a general index for all exports and imports we can derive the change in the export-import price ratio for all exports and imports (hereafter called the "general export-import price ratio"). (See Table 2.) In 1986, the general export-import price ratio increased by 12.4%. In 1997, it increased by 3.5%. Overall, the general export-import price ratio increased from 1986 to 1997, although the changes in 1988, 1994, and 1995 were negative. However, the general export-import price ratio cannot reflect the real situation of Taiwan’s trade with developing countries. Generally speaking, Taiwan’s exports mainly consisted of intermediate and capital goods, which are capital- and technology-intensive.38 For example, in 1998 the three biggest categories of Taiwan’s exports to Southeast Asian countries were electrical machinery and equipment, machinery and mechanical appliances, and knitted or crocheted fabrics. The three biggest categories of Taiwan's imports in 1998 from Southeast Asian countries were electrical machinery and equipment, machinery and mechanical appliance, and mineral fuels.39 The three biggest categories of Taiwan’s exports to China in 1998 were electrical machinery and equipment, machinery and mechanical appliance, and plastics and articles. The three biggest categories of Taiwan’s imports from China in 1998 were electrical machinery and equipment, iron and steel, and machinery and mechanical appliance.40 It’s thus very difficult to figure out changes in the export-import price ratio for 38 39 40 Chen-yuan Tung, “General Analysis of the Economic Relations between Taiwan and China -- the Tradeoff between Economics and Security”, paper presented to the 14 th annual conference of the Association of Chinese Political Studies in Washington, D.C., on November 6-7, 1999, p. 69. Board of Foreign Trade, Ministry of Economic Affairs, Republic of China, The Analysis on International Trade Situation, September 1998, p. 1-37. Ministry of Economic Affairs, Republic of China, The Analysis on Mainland Economic Situation (1998), June 1999, pp. 50-51. 22 intra-industrial trade. Since Taiwan’s exports consisted mainly of capital- and technology-intensive goods, it's plausible to say that Taiwan exported machinery and transport equipment to developing countries (China and Southeast Asian countries) and imported basic manufactures from them. 41 Therefore, the result of the change of the relative export-import price ratio between machinery and transport equipment and basic manufactures (hereafter called the "specific export-import price ratio") was quite different from those of the general export-import price ratio. (See Table 2.) In 1986, the export-import price ratio increase by 1.8%. In 1997, the ratio increased by 4.5%. The export-import price ratio still increased overall from 1986 to 1997, although the changes in 1990, 1991, 1992, 1993, and 1996 were negative. No matter which price ratio we use, the change of export-import price ratio cannot explain the trend of lessening wage inequality in Taiwan between 1987 to 1996. The increase of the export-import price ratio should predict worsening wage inequality, but the result was the opposite, or at least not consistent with the predicted pattern. (See Chart 1.) As for Richardson’s second candidate, biased technological change, Bernard and Jensen (1997) suggest three variables to measure technological change: computer investment, ratio of research and development (R&D) spending to sale, and number of 41 For example, with the more detailed HS 6 digit code, the five biggest categories of Taiwan's exports to China in 1998 were parts and accessories for automatic data processing machines and units, monolithic integrated circuits, textile fabrics nesoi, woven fabrics of synthetic filament, and acrylonitrile-butadiene-styrene (Abs) copolymers. The five biggest categories of Taiwan's 1998 imports from China were rectifiers and rectifying apparatus, power supplies, metallurgical bituminous coal, semifinished products of iron or nonalloy steel, electrical connectors, and zinc. 23 distinct technologies adopted.42 Mincer (1991) proposes the use of R&D spending per worker to measure skilled-biased technical change because relatively more educated workers are employed in those manufacturing sectors with newer capital equipment and more intensive spending on R&D.43 Due to the limitations of the available data, this paper uses three indicators, per capita R&D expenditure, R&D manpower, and patents granted, to measure the biased technological change in Taiwan's investment goods sector. (See Table 3.) In 1985, Taiwan spent NT$ 1.03 million/researcher on R&D, had 24,600 researchers, and granted 8,619 patents. In 1997, these figures had risen to NT$ 2.04 million/researcher, 76,588 researchers, and 29,356 patents. These figures simply show how quickly the investment goods sector experienced technological advance from 1985 to 1997. According to Richardson, this fact should predict worsened wage inequality in Taiwan in this period. However, wage inequality lessened over this period. The HOLW model predicts that increased imports from developing countries will lead to worsening wage inequality in Taiwan. From 1986 to 1997, Taiwan did increase its imports from both Southeast Asian countries and China while reducing its imports from developed countries. In 1986, the OECD-7 share of Taiwan’s total imports was 67.4% while the ASEAN-4 and China together supplied just 5.5% of Taiwan’s imports. In 1997, the OECD-7 share shrank to 59% and the ASEAN-4 plus China share increased to 11.9%. (See Table 4.) In terms of value, Taiwan imported $2.14 billion from the ASEAN-4 and China in 1988 and $13.6 billion in 1997. The absolute value of Taiwan’s imports from 42 43 Andrew B. Bernard and J. Bradford Jensen, "Exporters, Skill Upgrading, and the Wage Gap," Journal of International Economics, vol. 42, no. 1/2, February 1997, pp. 20-27. William R. Cline, Trade and Income Distribution (Washington, D.C.: Institute for International Economics, 1997), pp. 54-6. 24 the ASEAN-4 and China increased by 6.4 times in a decade. (See Table 5.) But the predictions of the HOLW model still contradict the trend of Taiwan’s wage inequality. The imports from developing countries increased, but the wage inequality improved. Conclusions From the standpoint of the HOSR model, if wage inequality in Taiwan did worsen, biased technological progress seems the more plausible explanation for the worsening wage inequality. The scale of biased technological advance increased two fold in terms of per capita R&D expenditure and 2.8 times in terms of R&D manpower and patents granted. The change of the export-import price ratio was trivial in terms of both the change of the general export-import price ratio and that of the specific export-import price ratio. From the standpoint of the HOLW model, increased imports from developing countries should contribute significantly to wage inequality in Taiwan. Taiwan’s imports from developing countries (both the ASEAN-4 and China) increased by $11.5 billion and their share of Taiwan’s total imports increased by 6.4%. However, Taiwan’s wage inequality did not worsen, but rather improved, in the last decade. Therefore, these two models cannot explain the trend of lessening wage inequality in Taiwan. There are several possible reasons to explain this situation. First, wage inequality may have been determined by the non-trade sector. In 1986, 51.1% of employment in Taiwan was in the manufacturing industry and primary industry (trade sector). In 1997, only 37.6 % of employment was in the trade sector. Therefore, the wage 25 of employees was largely determined by the non-trade sector. Second, Taiwan’s imports are mainly from the OECD-7 and the NICs-344, which accounted for 71.8% of imports in 1986 and 67.9% in 1997. Therefore, the influence of the imports from developed countries should outweigh that from developing countries in determining the trend of wage inequality in Taiwan. Since developed countries have higher skilled/unskilled labor ratio than Taiwan, the imports from them should reduce the export-import price ratio for Taiwan and thus improve the wage inequality. Third, trade between Taiwan and developing countries consists mainly of intra-industrial trade based on different qualities of goods within sector. In the H-O model, trade is inter-industrial trade based on different product prices between sectors. Therefore, based on the H-O model, both the HOSR model and the HOLW model cannot explain the lessening wage inequality in Taiwan. Fourth, the share of unskilled-labor in the labor force in Taiwan has fallen sharply since 1986. In 1986, the share of employees with a below-college education was 87.1%. In 1997, the share of employees with a below-college education was 76.2%, a drop of 11% over the last decade. Based on the HOLW model, the decreased supply of unskilled-labor may have contributed to the lessening wage inequality. In conclusion, both the HOSR model and the HOLW model cannot explain the trend of wage inequality in Taiwan. Surprisingly, Taiwan’s wage ratio did not worsen as 44 The NICs-3 refers to Singapore, South Korea, and Hong Kong. In 1997, Singapore’s per capita GNP was $26,452, Korea’s $9,509, and Hong Kong’s $26,499. Therefore, Taiwan’s imports from the NICs-3, as well as the OECD-7, would not suppose to worsen its wage inequality. 26 Taiwan imported more from the ASEAN-4 and China and experienced a very rapid technological progress in the investment sector. Even if Taiwan’s wage inequality had worsened in the last decade, biased technological change would have been the dominant factor rather than an increase of imports from developing countries. Therefore, freer trade between Taiwan and developing countries will not necessarily worsen wage inequality in Taiwan. At the very least, freer trade does not seem to play a crucial role in determining wage inequality trends in Taiwan. Finally, one policy concern is apparent in the process of expanded trade with developing countries: problems faced by unskilled workers displaced from their jobs. Even analysts who conclude that freer trade (globalization) is to blame for wage inequality still emphasize that trade (protection) policies are poor tools to use in assisting displaced workers. Instead, most economists suggest Taiwan should focus on programs to assist displaced workers directly, such as unemployment insurance, education, training programs, and even subsidies to the unskilled. Such solutions would also be appropriate for helping less-skilled workers cope with declining real earnings in situations where less-skilled wages are indeed negatively affected by freer trade.45 45 Susan M. Collins, "Economic Integration," pp. 9, 36-41. Adrian Wood, North-South Trade, pp. 22-24. Adrian Wood, "Globalization," p. 1479. J. David Richardson, "Income Inequality," pp. 51-53. 27 Appendix: Figure 1 b1 (Broad) investment goods PPFc1 a1 b0 c1 c0 a0 PPF1 PPF0 0 Other (consumption) goods (Broad) capital stock 00 28 Figure 2 r r1 B A r0 J PI = PI1 PI = PI0 Pc = Pc0 w w2 w 1 Figure 3 unskilled/skilled wage d D w3 w4 w0 w1 w2 D S2 S1 B d unkilled/skilled workers The dd line: closed economy demand for unskilled/skilled labor The DD line: open economy demand for unskilled/skilled labor 29 Figure 4 unskilled/skilled wage d w2 D w3 w0 w1 D d S4 S3 B unkilled/skilled workers The dd line: closed economy demand for unskilled/skilled labor The DD line: open economy demand for unskilled/skilled labor 30 Figure 5 unskilled/skilled wage d D1 w0 D2 w1 w2 D2 D1 S5 d B unkilled/skilled workers The dd line: closed economy demand for unskilled/skilled labor The D1D1 line: partial open economy demand for unskilled/skilled labor The D2D2 line: increased open economy demand for unskilled/skilled labor Table 1 Average Monthly Earnings of Employees by Educational Attainment unit: NT $ 1987 12755 23503 0.84 1988 14218 24815 0.75 1989 16481 28360 0.72 1990 18699 31253 0.67 1992 23249 37514 0.61 1993 25470 41570 0.63 1994 27501 43665 0.59 1995 28730 44770 0.56 Below college (A) College graduate (B) Ratio of wage inequality (C) Note: C=(B-A)/A Below college includes illiterate, self-educated, primary school, junior and senior high school, senior vocational school. College graduate includes junior college, college, and graduate school. Source: Council of Labor Affairs, Republic of China, Yearbook of Labor Statistics , 1987--1996. 31 1996 29292 47324 0.62 Table 2 Change in Relative Export Price to Import Price Index: 1991=100 Index for export price (A) Index for import price (B) 1985 116.74 133.13 1993 1994 99.53 100.09 97.41 102.39 1995 1995a 106.99 98.35 112.78 102.55 1986 111.81 115.79 1987 103.57 107.28 1988 100.82 106.22 1989 97.07 100.52 1990 99.46 102.89 1991 100 100 1992 94.62 93.08 12.41 0.27 -1.69 1.95 0.02 3.43 1.54 0.58 -4.42 -3.49 120.52 114.72 103.23 101.22 97.32 100.55 100 94.03 98.94 96.37 98.32 114.4 110.37 104.59 112.67 109.1 104.95 100 91.2 93.33 96.72 1.77 5.71 10.09 0.33 -7.38 -4.4 -2.83 -2.78 5.96 1996a 1997a 100 102.05 100 98.6 General Index change in relative export price to import price (C) Specific Index of export price for Machinery and transport equipments (A) Index of import price for basic manufactures (B) Indexchange in relative export price of machinery and transport equipments to import price of basic manufactures (C) 110.07 104.22 Note: a: 1996=100 b: C=yearly change in A - yearly change in B Source: Directorate-general of Budget, Accounting and Statistics, Republic of China, Statistical Yearbook of the Republic of China , 1996 & 1998. 32 98.82 11.4 4.2 3.45 100 98.06 100 102.57 -5.4 4.51 Chart 1 Wage Inequality and Export-Import Price Ratio 15 0.7 0.6 10 0.5 5 Change of general index of exportimport price ratio (left axis) 0.4 % Change of specific index of exportimport price ratio (left axis) 0.3 0 1987 1988 1989 1990 1992 1993 1994 1995 1996 0.2 -5 0.1 -10 0 year 33 Ratio of wage inequality (right axis) Table 3 R&D Expenditure Indicators R&D expenditure (NT $ 100 million) Per capita R&D expenditure (NT$ million/ researcher) R&D manpower (researcher) Patents Granted 99 106 164 169 192 224 254 287 368 438 548 715 818 948 1036 1147 1250 1380 1563 1.19 0.78 1.05 0.92 1.03 1.00 1.03 1.03 1.12 1.24 1.38 1.55 1.77 1.96 1.89 1.97 1.88 1.93 2.04 8345 13656 15633 18386 18580 22354 24600 27747 32863 35437 39742 46071 46173 48356 54905 58156 66478 71611 76588 3686 6633 6265 7462 7096 8592 8619 10332 10615 12355 19265 22601 27281 21264 22317 19032 29707 29469 29356 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 Source: Council for Economic Planning and Development, Republic of China, Taiwan Statistical Data Book , 1988 & 1998. 34 Table 4 Import Penetration in Taiwan unit: % Period Total OECD-7 NICs-3 Oil-exporting countries ASEAN-4 China 1952 100.0 83.3 9.7 0.0 0.5 n.a. 6.5 1955 100.0 83.9 3.2 0.0 2.1 n.a. 10.8 1960 100.0 81.3 2.1 4.7 2.6 n.a. 9.3 1965 100.0 78.4 1.9 0.0 4.4 n.a. 15.3 1970 100.0 74.7 3.1 3.2 6.7 n.a. 12.3 1972 100.0 70.6 3.7 6.9 6.7 n.a. 12.1 1974 100.0 67.7 3.4 10.4 7.0 n.a. 11.5 1976 100.0 65.0 2.9 14.4 5.7 n.a. 12.0 1981 100.0 57.7 3.8 19.1 5.4 0.4 13.7 1982 100.0 59.2 3.6 17.2 4.9 0.4 14.7 1983 100.0 59.9 3.1 15.1 4.9 0.4 16.6 1984 100.0 61.1 4.0 12.3 5.6 0.6 16.4 1985 100.0 60.9 3.9 10.1 5.7 0.6 18.8 1986 100.0 67.4 4.4 5.6 4.9 0.6 17.1 1987 100.0 67.1 5.2 5.2 4.8 0.8 16.9 1988 100.0 67.5 7.2 3.5 4.3 1.0 16.5 1989 100.0 65.2 8.3 3.4 4.3 1.1 17.7 1990 100.0 64.1 7.8 3.5 4.7 1.4 18.5 1991 100.0 63.7 8.2 2.8 5.5 1.8 18.0 1992 100.0 64.1 8.1 2.3 6.0 1.6 18.0 1993 100.0 63.2 7.9 2.3 6.4 1.4 18.8 1994 100.0 62.0 8.1 1.9 7.0 2.2 18.8 1995 100.0 60.9 8.9 2.1 7.0 3.0 18.1 1996 100.0 59.8 8.5 2.2 7.7 3.0 18.8 1997 100.0 59.0 8.9 2.2 8.5 3.4 18.0 Others Note: OECD-7: Japan, the USA, Germany, United Kingdom, France, Canada, and Netherlands NICs-3: Republic of Korea, Singapore, and Hong Kong Oil-exporting countries: Saudi Arabia and Kuwait ASEAN-4: Malaysia, Indonesia, Thailand, and Philippines. Source: Council for Economic Planning and Development, Republic of China, Taiwan Statistical Data Book , 1999. Taiwan Economic Research Institute, Cross-Strait Economic Statistics Monthly (Taipei: Mainland Affairs Council, Executive Yuan, ROC, November, 1998). 35 Table 5 Taiwan's Imports from ASEAN-4 and China unit: $million Philippines ASEAN-4 Thailand Malaysia Indonesia Total China Total 1988 242.3 341.9 943.4 613.4 2141 n.a. 2141 1989 238.5 390.2 887.5 706.2 2222.4 586.9 2809.3 1990 236.3 448 1003 921.6 2608.9 765.4 3374.3 1991 235.3 586.1 1409.4 1234.3 3465.1 1125.9 4591 1992 305.2 824.6 1829.2 1407.3 4366.3 1119 5485.3 1993 364.8 973 1938.9 1624 4900.7 1103.6 6004.3 1994 460.7 1108.8 2326.9 2114.4 6010.8 1858.7 7869.5 1995 632.2 1485.3 2953.7 2150.4 7221.6 3091.4 10313 1996 840.3 1671.7 3565.2 1184.5 7261.7 3059.8 10321.5 1997 1374.6 1926.9 4228.3 2184.7 9714.5 3915.4 13629.9 Source: Department of Statistics, Ministry of Finance, Republic of China, Monthly Statistics of Exports and Imports, January 1998. Taiwan Economic Research Institute, Cross-Strait Economic Statistics Monthly (Taipei: Mainland Affairs Council, Executive Yuan, ROC, November 1998). 36