Year	kg per 2010 US$ of GDP
1960	0.30264696522044
1961	0.298123036400117
1962	0.312545431678973
1963	0.307511854577222
1964	0.345902248829954
1965	0.319463353609586
1966	0.326985746720071
1967	0.324349302216244
1968	0.343945099673278
1969	0.350582316872111
1970	0.394190249017314
1971	0.394451259304816
1972	0.37218336325289
1973	0.380727481030495
1974	0.376285524695609
1975	0.370988546549707
1976	0.373633164296711
1977	0.387238990357817
1978	0.382751907855119
1979	0.364648069385631
1980	0.37275146454057
1981	0.352876293270677
1982	0.347314929082772
1983	0.334933843900258
1984	0.327095032021791
1985	0.30220161118906
1986	0.309231438445705
1987	0.332575392733195
1988	0.357637487963058
1989	0.354778617878819
1990	0.36021770997136
1991	0.339395332375843
1992	0.34345961111851
1993	0.377320799182054
1994	0.331325514963926
1995	0.31633226420041
1996	0.314239361232661
1997	0.33248670026682
1998	0.337802893191444
1999	0.351393423418087
2000	0.35311534693562
2001	0.314671318835296
2002	0.298639775629584
2003	0.278191328042073
2004	0.320461728066357
2005	0.351047070786733
2006	0.306609442880863
2007	0.347985566614676
2008	0.304481914491552
2009	0.379674483611491
2010	0.390390544119256
2011	0.316408112823931
2012	0.330768004701106
2013	0.32429844863181
2014	0.342197913439586