Year	kg per 2010 US$ of GDP
1960	6.08669952579773
1961	5.91781159817325
1962	4.99933655193676
1963	4.49478443120083
1964	3.80531775376097
1965	3.54460626753081
1966	3.51852953496301
1967	3.09433775113716
1968	3.49247473636291
1969	3.67635721502244
1970	4.11931543234187
1971	4.37132987338237
1972	4.47481110669983
1973	4.31735497194877
1974	4.3047130403935
1975	4.59099997496542
1976	4.87018537271014
1977	4.95937687021519
1978	4.97969402251238
1979	4.73144098323454
1980	4.30758922216157
1981	4.05193810428361
1982	4.04957041956953
1983	3.85430139200882
1984	3.64446725583503
1985	3.4810149913855
1986	3.36176949079766
1987	3.21468771103517
1988	3.09899774555133
1989	3.02349594147287
1990	2.95075018059888
1991	2.83596937750182
1992	2.60382517713948
1993	2.44670366711018
1994	2.29921065047386
1995	2.24987355028928
1996	2.13469876247488
1997	1.95792515665063
1998	1.73965725557133
1999	1.6127117673176
2000	1.52551823430859
2001	1.44215305023609
2002	1.4589259764301
2003	1.56352441273069
2004	1.63671391344609
2005	1.65552834736974
2006	1.62620650925873
2007	1.53295281844539
2008	1.50183451469285
2009	1.45420868404605
2010	1.44172880106427
2011	1.45961960549322
2012	1.39427749933418
2013	1.3233683138015
2014	1.23741863642175