Year	kg per 2010 US$ of GDP
1960	0.299479478174231
1961	0.296776819635552
1962	0.33600261655896
1963	0.348319819833811
1964	0.37638362345819
1965	0.389419840787564
1966	0.430030358930948
1967	0.461685045283792
1968	0.536904170463371
1969	0.527050686612625
1970	0.55062323842449
1971	0.581391719481516
1972	0.528493813266187
1973	0.578806818529101
1974	0.540986552646325
1975	0.545952252933388
1976	0.541927500431168
1977	0.536909439479369
1978	0.520539446093967
1979	0.501428517346242
1980	0.462660130664664
1981	0.419104482915854
1982	0.408359166993267
1983	0.405632825707597
1984	0.383033370317385
1985	0.373966770083647
1986	0.376550396677409
1987	0.403950810556384
1988	0.43681697725485
1989	0.426684930612172
1990	0.441847738156324
1991	0.467479776577734
1992	0.517047722506795
1993	0.513910975069263
1994	0.545211535244161
1995	0.57702589913694
1996	0.558196232817055
1997	0.607469248003158
1998	0.594525585210549
1999	0.576078623232651
2000	0.584826995601154
2001	0.550892705672996
2002	0.533653874311533
2003	0.509012437285927
2004	0.494695151183255
2005	0.477023442998035
2006	0.410014484406675
2007	0.41000540438045
2008	0.430141254089414
2009	0.418297138017782
2010	0.425215283216868
2011	0.413233670674308
2012	0.413211535279131
2013	0.415244867819786
2014	0.421202370476103