Year	kg per 2010 US$ of GDP
1960	0.445865274929587
1961	0.354224739538077
1962	0.641634081256314
1963	0.546982808680627
1964	0.70479658197415
1965	0.671679165586277
1966	0.613219949606759
1967	0.876753924281881
1968	0.692867322812331
1969	0.871093383625955
1970	0.741282534708268
1971	0.842695159060895
1972	0.842986508975742
1973	0.744337349925815
1974	0.688230291893481
1975	0.759269678430293
1976	0.75952807704765
1977	0.802344049026924
1978	0.812294855455441
1979	0.729893207214685
1980	0.586994856453423
1981	0.558090662113352
1982	0.525170886198761
1983	0.53667274905857
1984	0.526293891297809
1985	0.576446007107557
1986	0.59383129176478
1987	0.593718577986426
1988	0.593122131803705
1989	0.632900133923358
1990	0.588689041453613
1991	0.608917331387794
1992	0.537843005835398
1993	0.537386899169789
1994	0.531328121936995
1995	0.533102768609493
1996	0.428641520776056
1997	0.522387844988796
1998	0.479799312501864
1999	0.414874548250256
2000	0.417314297052024
2001	0.448895842795945
2002	0.413031222480453
2003	0.377791056574674
2004	0.327357389005205
2005	0.342990385458506
2006	0.345075553182943
2007	0.366688275165249
2008	0.325161800497917
2009	0.434279185613026
2010	0.385935967516166
2011	0.421453633160803
2012	0.324544587579459
2013	0.346557115781348
2014	0.322280290448711