Year	kg per 2010 US$ of GDP
1960	3.29910581871495
1961	2.71562006551963
1962	2.22432050266812
1963	2.09087931311314
1964	1.92870338879337
1965	1.90906037805865
1966	1.95811364992804
1967	1.71658958752684
1968	1.82670543704863
1969	1.99068719142192
1970	2.2887413808055
1971	2.41235027754055
1972	2.43304306185456
1973	2.35420798270566
1974	2.29079872434935
1975	2.46365880675184
1976	2.49636263817812
1977	2.5548344214926
1978	2.60779853703683
1979	2.49460622885591
1980	2.28671330530642
1981	2.14742244594742
1982	2.18666922092694
1983	2.14878862013234
1984	2.11603686839424
1985	2.13421305702511
1986	2.09521303298059
1987	2.05363037151879
1988	2.01165291832027
1989	1.93562945794171
1990	1.88844981241385
1991	1.8602232509135
1992	1.77407551469339
1993	1.71944441244419
1994	1.6485458499959
1995	1.63720780224683
1996	1.58007280651296
1997	1.49651312957464
1998	1.38670526169789
1999	1.31761353278224
2000	1.27048936434972
2001	1.23175126231067
2002	1.24582807540675
2003	1.3277232719366
2004	1.38725276562556
2005	1.4047741543867
2006	1.38410303969687
2007	1.32327100976727
2008	1.31126226171513
2009	1.28726770011061
2010	1.27585549052332
2011	1.30892685365665
2012	1.25492702287999
2013	1.18267399926697
2014	1.11299286315981