Year	kg per 2010 US$ of GDP
1960	0.348185591769508
1961	0.351360825989174
1962	0.36084605474992
1963	0.367365007524482
1964	0.389443034836091
1965	0.420954469907334
1966	0.442427619480061
1967	0.47784253441293
1968	0.520698852241429
1969	0.49979072152297
1970	0.506207685259198
1971	0.533404751451878
1972	0.542567333469855
1973	0.579833351208999
1974	0.600629780019177
1975	0.563305010694586
1976	0.571463205874384
1977	0.548495082544008
1978	0.556553497985367
1979	0.640512525243763
1980	0.644099682357589
1981	0.67177554154256
1982	0.680570146034633
1983	0.70060045543982
1984	0.740518483302056
1985	0.740328667439883
1986	0.73388916312442
1987	0.719866181219455
1988	0.754244823377714
1989	0.672477881663873
1990	0.641989995091342
1991	0.648768028203014
1992	0.672470170871398
1993	0.66785988670506
1994	0.643905541344751
1995	0.62012178818494
1996	0.629927559793227
1997	0.612007924536189
1998	0.616127722594509
1999	0.617828797043617
2000	0.647455456594248
2001	0.642927648575106
2002	0.621675786041539
2003	0.627878893312922
2004	0.614707796446667
2005	0.580403701268532
2006	0.564712314092658
2007	0.561484786615054
2008	0.542653553228561
2009	0.493592912917642
2010	0.491721490814082
2011	0.493406490599399
2012	0.475666325417464
2013	0.463556701598717
2014	0.441463591377438