Year	kg per 2010 US$ of GDP
1960	0.447937258980229
1961	0.468835249865332
1962	0.494510025642888
1963	0.520504480454341
1964	0.548169798849313
1965	0.598149285428761
1966	0.640036798325498
1967	0.715970839587041
1968	0.68392011916714
1969	0.662984095925096
1970	0.68655971274892
1971	0.73018153224067
1972	0.753743908375673
1973	0.815051099761306
1974	0.879663285416823
1975	0.783047394172187
1976	0.814379708943028
1977	0.745945661581379
1978	0.761142926246349
1979	0.894964048033604
1980	0.887539164363922
1981	0.946015462712922
1982	0.97285316252824
1983	1.00061658443559
1984	1.06107201653189
1985	1.05344224797169
1986	1.0601873396454
1987	0.985951412672919
1988	1.04066816183466
1989	0.886855335746471
1990	0.820416576476904
1991	0.824692942512239
1992	0.86776218774704
1993	0.875725804460656
1994	0.83140916206285
1995	0.793734347659056
1996	0.812724133736742
1997	0.788825080873003
1998	0.795187090509841
1999	0.80203820819635
2000	0.870050687218546
2001	0.865234421327348
2002	0.840919238469796
2003	0.823612338879744
2004	0.796212529179813
2005	0.748335605673656
2006	0.719086379624768
2007	0.703640398739669
2008	0.676556375810555
2009	0.58978939119633
2010	0.580069855144018
2011	0.585730929496237
2012	0.572028731603164
2013	0.549457692990895
2014	0.502989539770841