Year	kg per 2010 US$ of GDP
1960	0.824703261097699
1961	0.793420505699356
1962	0.782139842569701
1963	0.78400401364975
1964	0.776982906980567
1965	0.76877226986405
1966	0.763214585470744
1967	0.754092157498364
1968	0.746185805939565
1969	0.745353130353997
1970	0.770602526726615
1971	0.765221372242209
1972	0.753727853118121
1973	0.746037863429338
1974	0.732671149173064
1975	0.723731050375337
1976	0.727721769823747
1977	0.722056951093322
1978	0.703317575854235
1979	0.713286748359838
1980	0.692461668621002
1981	0.658347223075453
1982	0.649832900223328
1983	0.631851860325217
1984	0.626228275138381
1985	0.621870573265267
1986	0.61964006068142
1987	0.612268300504986
1988	0.606283313824973
1989	0.597369750817895
1990	0.583626350147291
1991	0.582072407308715
1992	0.566335090009895
1993	0.557243600690303
1994	0.550458144374997
1995	0.545784897364056
1996	0.540170469347612
1997	0.529790364072803
1998	0.519584337773953
1999	0.501975495155716
2000	0.493449766755386
2001	0.495536174670004
2002	0.492010647720713
2003	0.504215323459621
2004	0.507075583787142
2005	0.507041660155409
2006	0.503748748574732
2007	0.493045212734031
2008	0.499613230187946
2009	0.503608189486307
2010	0.506873568950424
2011	0.51176147296338
2012	0.508148738585888
2013	0.500138610212241
2014	0.490407719748416