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GLOBAL EMISSIONS AS SHARE OF GLOBAL GDP (kilograms per dollar of GDP, measured in dollars at 2000 prices) 2.5 2.0 Low- and middle-income countries 1.5 Averting runaway climate change Bending the curve Target = 15 gigatonnes (CO2) World 1.0 High-income countries 0.5 Emissions-GDP ratio of 0.5 in 2050 = 90 gigatonnes (CO2) Source: World Bank’s world development indicators, and IEA’s emissions data (2012) 2050 2048 2046 2044 2042 2040 2036 2038 2034 2028 2030 2032 2026 2016 2018 2020 2022 2024 2008 2010 2012 2014 2006 2004 1998 2000 2002 1994 1996 1978 1980 1982 1984 1986 1988 1990 1992 1974 1976 1972 1964 1966 1968 1970 1962 1960 0