Year	kg per 2010 US$ of GDP
1977	1.44270391272632
1978	1.45829672367799
1979	1.1176858886819
1980	0.363068835610934
1981	0.260053441594912
1982	0.717992005738052
1983	0.195913850811652
1984	0.309281309096658
1985	0.488442675506833
1986	0.438089427721514
1987	0.453158889341373
1988	0.447933261578933
1989	0.425580599604658
1990	0.407841687502383
1991	0.378417437927877
1992	0.368959878217815
1993	0.360190450448014
1994	0.333085569264752
1995	0.357809902494095
1996	0.35801749192737
1997	0.356418253638385
1998	0.352470969663734
1999	0.351588606029256
2000	0.344182931217528
2001	0.365975133288812
2002	0.385145078169278
2003	0.395505570830667
2004	0.391050632904161
2005	0.373877005094722
2006	0.343000305497937
2007	0.332093376039504
2008	0.339979261402925
2009	0.410434908804235
2010	0.455006569630775
2011	0.454919328051692
2012	0.448925535151295
2013	0.449392295080215
2014	0.435396192528483