Year	kg per 2010 US$ of GDP
1960	0.572666886048605
1961	0.50201805923873
1962	0.473948722422889
1963	0.487564618192086
1964	0.513683477077318
1965	0.495399700177544
1966	0.53145358279151
1967	0.504124988147488
1968	0.5325727820121
1969	0.461749035411183
1970	0.459309930792372
1971	0.444459861989852
1972	0.40523814580193
1973	0.45586641717036
1974	0.475342143161346
1975	0.471686260053631
1976	0.452279319081107
1977	0.493493726823331
1978	0.568926326491191
1979	0.641869768797108
1980	0.652796572206533
1981	0.642868728357743
1982	0.617746199276357
1983	0.617587349900609
1984	0.681014208964853
1985	0.711402619882673
1986	0.73130983336313
1987	0.781304862509287
1988	0.911482822045267
1989	0.933381809815904
1990	0.902541090775025
1991	0.867723049023154
1992	0.847763119184612
1993	0.871155531481127
1994	0.988991560268212
1995	0.995033712016845
1996	0.956893979133992
1997	0.928964520168504
1998	1.04155835121932
1999	1.27987245789458
2000	1.17709906809796
2001	1.25021704726957
2002	1.17525313761872
2003	1.12571287227044
2004	1.15224675173224
2005	1.17100903442165
2006	1.2116691157969
2007	1.14226269879672
2008	1.18824029905999
2009	1.20396507188583
2010	1.17648714629079
2011	1.17821530577505
2012	1.322044443061
2013	1.34197996083739
2014	1.34440539052322