Year	kg per 2010 US$ of GDP
1960	0.237512904322729
1961	0.251684088872431
1962	0.284077017092218
1963	0.291004872442843
1964	0.365826680453896
1965	0.336833489929191
1966	0.385611549567589
1967	0.45569276462012
1968	0.592305834573577
1969	0.47339573252789
1970	0.448676305025833
1971	0.535461820592631
1972	0.582557629567272
1973	0.591824164924181
1974	0.561679795829896
1975	0.538644707231522
1976	0.580926780014773
1977	0.591000405875704
1978	0.584283439276707
1979	0.580879684277801
1980	0.603412677285726
1981	0.540137715843374
1982	0.510818768788229
1983	0.54178553734405
1984	0.554797689413379
1985	0.56128357319908
1986	0.543111537216009
1987	0.568166706839779
1988	0.590111436006481
1989	0.619317001008916
1990	0.641236996373838
1991	0.649078077008291
1992	0.660696134721585
1993	0.694679555635582
1994	0.71639150280102
1995	0.767312432001322
1996	0.812344560406352
1997	0.861584992136316
1998	0.824573264635995
1999	0.845031134418397
2000	0.832616565946227
2001	0.864081030677669
2002	0.871427225981053
2003	0.876403582487671
2004	0.89288741000821
2005	0.872078375971784
2006	0.846181070796037
2007	0.80383385081628
2008	0.79018618507054
2009	0.843463383361541
2010	0.826508805603826
2011	0.809134057959414
2012	0.804043065807303
2013	0.792216846719608
2014	0.826645100030762