Year	kg per 2010 US$ of GDP
1965	0.487016309658455
1966	0.551312747454172
1967	0.588887874106321
1968	0.621415648399117
1969	0.636185759611118
1970	0.589893009427023
1971	0.600438775247696
1972	0.573425705349002
1973	0.588373150595584
1974	0.60848588970568
1975	0.583666451519342
1976	0.570372033972761
1977	0.637317334094458
1978	0.663730789280999
1979	0.729222246035033
1980	0.734768842304842
1981	0.721384933959743
1982	0.702258536845014
1983	0.796085541971631
1984	0.768923699823666
1985	0.752543044711844
1986	0.771565762365713
1987	0.704205734505302
1988	0.746526011461601
1989	0.77904103349405
1990	0.723469277942624
1991	0.812907058195179
1992	0.731376680000885
1993	0.786103964602981
1994	0.735983835737214
1995	0.709810170453671
1996	0.705543204358241
1997	0.676603279527478
1998	0.68595744343234
1999	0.658654443511929
2000	0.683638662214317
2001	0.688215450456697
2002	0.680667928728159
2003	0.662096298046057
2004	0.654103999434696
2005	0.642356949426545
2006	0.619237632193196
2007	0.608529984985894
2008	0.60110418828549
2009	0.58248855259296
2010	0.627913679172779
2011	0.602249557124754
2012	0.60097033682318
2013	0.598530713280689
2014	0.605680547565371