Year	kg per 2010 US$ of GDP
1960	0.827796730050322
1961	0.329404728462451
1962	0.354981917572541
1963	0.396111874400821
1964	0.305119698520053
1965	0.264100057285313
1966	0.276548094060961
1967	0.232620705133933
1968	0.346979311738297
1969	0.919580265520921
1970	0.66718747709746
1971	0.593359274331254
1972	0.496767496505726
1973	0.386017818943695
1974	0.360278820949817
1975	0.356859242305727
1976	0.308333821344888
1977	0.350785333050397
1978	0.474666201732611
1979	0.433106997713571
1980	0.370672215793449
1981	0.41021049207198
1982	0.312778027824125
1983	0.397783601536344
1984	0.341488937872516
1985	0.388550940576714
1986	0.3901683476079
1987	0.268937693098054
1988	0.266019564877788
1989	0.215498823531307
1990	0.271885408319163
1991	0.297594130533997
1992	0.300872245499677
1993	0.296792683512401
1994	0.347345928156734
1995	0.293948793782225
1996	0.341888243105542
1997	0.340709657440405
1998	0.31260338404816
1999	0.282226225889961
2000	0.306961133133197
2001	0.43795374131324
2002	0.371020633897816
2003	0.36394661417289
2004	0.335665648096998
2005	0.273475012295055
2006	0.352203768161106
2007	0.285196730618175
2008	0.279866891242821
2009	0.266724887470217
2010	0.281636382375189
2011	0.327789413926099
2012	0.3264009504513
2013	0.312726333464215
2014	0.328546723087008