Year	kg per 2010 US$ of GDP
1960	0.65974076904495
1961	0.642086567942214
1962	0.633740707583885
1963	0.635401686988499
1964	0.626694095216619
1965	0.619766471541552
1966	0.610420514354904
1967	0.609698382401757
1968	0.605304444166131
1969	0.607496975749389
1970	0.644573953073945
1971	0.631138546285446
1972	0.627948133562436
1973	0.621177892717889
1974	0.599882233678706
1975	0.578378817477281
1976	0.579743212769253
1977	0.569132674162781
1978	0.559896355676009
1979	0.552377525117943
1980	0.529396593954996
1981	0.50047012013067
1982	0.479598610753075
1983	0.463673591688446
1984	0.454429384289876
1985	0.441474647638704
1986	0.426973425388505
1987	0.424810190206701
1988	0.420723178043664
1989	0.416206825791168
1990	0.397340244942605
1991	0.394664458594815
1992	0.390466653124106
1993	0.387249189314441
1994	0.376993289654108
1995	0.370744031881785
1996	0.369035475667271
1997	0.358358371902565
1998	0.348427932661798
1999	0.341668118977269
2000	0.337034710397039
2001	0.33061651884738
2002	0.327206082802808
2003	0.325481993648819
2004	0.318912589266664
2005	0.310167866190479
2006	0.299383708671925
2007	0.293700972280294
2008	0.287490847314608
2009	0.279080383420284
2010	0.280712675948412
2011	0.270754092314757
2012	0.263039814879687
2013	0.259330093388917
2014	0.251219748504804