Year	kg per 2010 US$ of GDP
1966	0.457645476576933
1967	0.412026819830559
1968	0.389662240679748
1969	0.37224267988006
1970	0.444973902405088
1971	0.473930434400906
1972	0.453968042953592
1973	0.525039758768752
1974	0.574379226934291
1975	0.532786177010961
1976	0.499681332718425
1977	0.518262914894759
1978	0.521871900592764
1979	0.607765334803238
1980	0.585868433038317
1981	0.592972661144899
1982	0.585506973210042
1983	0.602451691521992
1984	0.566699432916666
1985	0.536124101785723
1986	0.518532051181316
1987	0.554271171382613
1988	0.521536264055671
1989	0.548812860408034
1990	0.54514137028892
1991	0.539417505099312
1992	0.574435069099345
1993	0.627131153055303
1994	0.595681790546226
1995	0.645302401788434
1996	0.589780699006438
1997	0.611949259904691
1998	0.573795328735768
1999	0.58740844133812
2000	0.589452153033952
2001	0.61096795597008
2002	0.600942204382981
2003	0.556859441121554
2004	0.612711677500817
2005	0.62688588974429
2006	0.603800858684274
2007	0.618152518900282
2008	0.614152274071294
2009	0.584494471183578
2010	0.600304365943433
2011	0.587988658941619
2012	0.620736452645871
2013	0.559267215982836
2014	0.551927047352704