Year	kg per 2010 US$ of GDP
1960	1.2175966195459
1961	1.05722497213285
1962	0.986037594136027
1963	0.971964207227763
1964	0.945629117461447
1965	0.961062845570497
1966	0.981128929016847
1967	0.927261624825533
1968	0.945436251131245
1969	0.973941925069835
1970	1.02768993822709
1971	1.04533631275853
1972	1.03299079805658
1973	1.02014606263129
1974	0.992736245494595
1975	1.02978873682611
1976	1.02535155701596
1977	1.04965617776242
1978	1.09508857026931
1979	1.08866050651713
1980	1.05522144106431
1981	1.02589560374181
1982	1.05738823844016
1983	1.08168765458573
1984	1.0837024831822
1985	1.10128347026574
1986	1.10115843566222
1987	1.10828828196715
1988	1.11910911145343
1989	1.12002705117702
1990	1.08760508166005
1991	1.11755248292195
1992	1.14400438931938
1993	1.11779453387553
1994	1.07996274613274
1995	1.08227860240741
1996	1.06057906288358
1997	1.00879739620821
1998	0.974476313390461
1999	0.960700922638014
2000	0.927486017122031
2001	0.915998913966359
2002	0.915442025366728
2003	0.950925343124849
2004	0.953057398846008
2005	0.952006135772478
2006	0.941460379176354
2007	0.910500780468974
2008	0.917252301524948
2009	0.921215073070759
2010	0.913275734152344
2011	0.93098977410366
2012	0.918370605362649
2013	0.879440773276341
2014	0.853185356227769