Year	kg per 2010 US$ of GDP
1960	0.911638554876216
1961	0.888000731699298
1962	0.867949935252755
1963	0.868112984413066
1964	0.856498947506615
1965	0.838338302032385
1966	0.826857902479587
1967	0.837000511214096
1968	0.827978513968638
1969	0.843619869025007
1970	0.909684672739262
1971	0.886349684654839
1972	0.882303406677054
1973	0.872701801839719
1974	0.845860418085457
1975	0.812182984772512
1976	0.806822699510126
1977	0.792759682874203
1978	0.774712882465538
1979	0.752616032004741
1980	0.727062808275215
1981	0.680933936734548
1982	0.658418140316157
1983	0.634694861992517
1984	0.61003661158705
1985	0.587890475219358
1986	0.568582956152235
1987	0.573153399508709
1988	0.574129428269287
1989	0.560871314366129
1990	0.535860382942904
1991	0.536156871636905
1992	0.527441424954548
1993	0.525767414112803
1994	0.512006554774876
1995	0.502396829606762
1996	0.495375019354172
1997	0.484812294715774
1998	0.46680904572119
1999	0.454180018121104
2000	0.451154025933611
2001	0.439014549438717
2002	0.435008856375254
2003	0.425486854724279
2004	0.415719422652895
2005	0.403957959206071
2006	0.386474445497495
2007	0.385465928479991
2008	0.374330067814145
2009	0.360087410844516
2010	0.359892819432451
2011	0.347444018637557
2012	0.328863866931373
2013	0.325421186170819
2014	0.323489040755351