Year	kg per 2010 US$ of GDP
1960	0.733287317771684
1961	0.758129858020656
1962	0.808034408710771
1963	0.827939855100886
1964	0.755785085300485
1965	0.838279451855098
1966	0.857727581992179
1967	0.81477404386273
1968	0.853965723698
1969	0.819407489763833
1970	0.791458785897886
1971	0.817264341524703
1972	0.857952374775105
1973	0.857508976449224
1974	0.867560532975458
1975	0.876411447299454
1976	0.890768823721101
1977	0.886405571421345
1978	0.852757999605762
1979	0.927460366678301
1980	0.925000635995524
1981	0.938198233911527
1982	0.939326471067186
1983	0.950571974982597
1984	0.938852391704732
1985	0.979825254464072
1986	0.999088818665828
1987	1.0246913822659
1988	1.01858471166669
1989	1.05135323955469
1990	1.07251722897602
1991	1.11158604213217
1992	1.11840310996725
1993	1.11044133265072
1994	1.11005651615927
1995	1.09794172413885
1996	1.11958277151538
1997	1.11849388182743
1998	1.07910094703012
1999	1.06172319698152
2000	1.06184952442567
2001	1.03172476762564
2002	1.01176345016437
2003	0.983629864094071
2004	0.965131952629602
2005	0.946551148598299
2006	0.937127731936237
2007	0.941671380478191
2008	1.00662036878256
2009	1.03298002134748
2010	0.955445478889698
2011	0.969928115901752
2012	0.999089204858853
2013	0.949538795129488
2014	0.969756844661217