Year	kg per 2010 US$ of GDP
1960	1.03438920457839
1961	1.01059420603782
1962	1.06282054471182
1963	1.12413394013068
1964	1.0744186273535
1965	1.02102088821146
1966	0.982149751504358
1967	0.988982361115112
1968	1.05756405989768
1969	0.972192551307261
1970	0.885611941440866
1971	0.835795465555045
1972	0.680051792441367
1973	0.672341850054845
1974	0.694156981003157
1975	0.722097930108634
1976	0.675412287093274
1977	0.69389286810328
1978	0.688262788595049
1979	0.716934463744587
1980	0.738379309089008
1981	0.733945532130041
1982	0.748685595629407
1983	0.755903114018326
1984	0.765020469959801
1985	0.78270725407562
1986	0.777702431340403
1987	0.790857404636057
1988	0.799051040152429
1989	0.797163355026472
1990	0.858398461860151
1991	0.813197942751621
1992	0.805324522842652
1993	0.848148048563071
1994	0.889192474851274
1995	0.843599881334474
1996	0.899491425170514
1997	0.892947894240292
1998	0.897880979927245
1999	0.890309587064305
2000	0.905525970318375
2001	0.903216762042901
2002	0.921880707473947
2003	0.916348675047543
2004	0.94466895178018
2005	0.910963659272849
2006	0.917230948837726
2007	0.951733449593839
2008	0.936848148581158
2009	0.909706180007057
2010	0.909748788688764
2011	0.888491963193439
2012	0.866550916146844
2013	0.834265228704484
2014	0.806576100075621