Year	kg per 2010 US$ of GDP
1975	0.539691603670703
1976	0.565453752962206
1977	0.552895574114383
1978	0.599706280602257
1979	0.57587985091991
1980	0.588521620112023
1981	0.5591545380786
1982	0.589548836510102
1983	0.674883501550555
1984	0.726301340505889
1985	0.78644872604834
1986	0.829635285002857
1987	0.835386783486607
1988	0.838386836201772
1989	0.832173539465221
1990	0.706630887991633
1991	0.767109547975133
1992	0.785267454603616
1993	0.839040753438431
1994	0.835197232215378
1995	0.781102894863502
1996	0.742813030480051
1997	0.688490635893219
1998	0.711684889201136
1999	0.709548382966295
2000	0.764694460366732
2001	0.748872615154586
2002	0.759891369491461
2003	0.776541448817619
2004	0.778142343349422
2005	0.774725329585196
2006	0.762559837221846
2007	0.717569009040324
2008	0.743989282039544
2009	0.785185392146779
2010	0.779862785010136
2011	0.757239246695555
2012	0.770502287398681
2013	0.737767595792197
2014	0.769012647388284