Year	kg per 2010 US$ of GDP
1960	0.0604141821471951
1961	0.0658009975590736
1962	0.0326608867978479
1963	0.0256544263424677
1964	0.0637959514605199
1965	0.0668158767216226
1966	0.112696763387895
1967	0.28725873599448
1968	0.543196285915371
1969	0.36730152916596
1970	0.490961360470773
1971	0.608341872012521
1972	0.525977528210452
1973	0.925982145835205
1974	0.681257295103258
1975	0.562731252862042
1976	0.44127338890459
1977	0.558279729316187
1978	0.880187213142213
1979	0.78256528015176
1980	0.749413329639189
1981	0.70677262678336
1982	0.727330928665046
1983	0.579699910555297
1984	0.585787449652733
1985	0.632061751203028
1986	0.501092158661896
1987	0.489634127348742
1988	0.467518551802501
1989	0.573554956532833
1990	0.425041347669928
1991	0.403821795988153
1992	0.453079486714854
1993	0.441062505467844
1994	0.37402789675149
1995	0.375356391153586
1996	0.374002894743331
1997	0.355335929279395
1998	0.356519936893824
1999	0.377940918286597
2000	0.37608566696931
2001	0.376565799064239
2002	0.359625572774744
2003	0.357080260327992
2004	0.357996368238574
2005	0.363670534729152
2006	0.319435630255186
2007	0.29735946514906
2008	0.311641770956126
2009	0.316979506706201
2010	0.335068130630348
2011	0.323372398702615
2012	0.31539582905452
2013	0.308856082454517
2014	0.291145649818855