Year	kg per 2010 US$ of GDP
1960	0.660143774654556
1961	0.690445462644839
1962	0.718654464938783
1963	0.739732927426559
1964	0.721693030941434
1965	0.783626316619489
1966	0.817733648801486
1967	0.811070750963437
1968	0.834949039872517
1969	0.819239819740168
1970	0.81577375290193
1971	0.827811034101888
1972	0.855357765180311
1973	0.872381194079464
1974	0.869247753620956
1975	0.864124548179945
1976	0.859003272715741
1977	0.867634016663207
1978	0.866311313124241
1979	0.917634104712195
1980	0.90280902853032
1981	0.920684502675318
1982	0.933699612540895
1983	0.944528861248919
1984	0.946424882919644
1985	0.979675387269666
1986	0.99320546028277
1987	0.994307982772251
1988	1.00751931787615
1989	0.981842469994547
1990	1.00443858925284
1991	1.06072073993619
1992	1.10419321072566
1993	1.07058026015148
1994	1.00973404037322
1995	1.00165858093758
1996	0.991945761134746
1997	0.962414564486957
1998	0.942775658165582
1999	0.945978748997997
2000	0.954376846106014
2001	0.933499297752072
2002	0.91436942153278
2003	0.906364655254993
2004	0.887969024820558
2005	0.861434420218266
2006	0.835711553793628
2007	0.826017803753425
2008	0.847517330317901
2009	0.840566593092779
2010	0.801991859837266
2011	0.836468591367631
2012	0.844694104595503
2013	0.774020965140493
2014	0.760911159109225