Year	kg per 2010 US$ of GDP
1992	0.480904949678101
1993	0.56639091197959
1994	0.610743329634874
1995	0.820694957484117
1996	0.746296329705369
1997	0.797506918632792
1998	0.724849104953713
1999	0.770533338564854
2000	0.72968734260894
2001	0.779607115366408
2002	0.764604419965994
2003	0.670687527141353
2004	0.6420197067749
2005	0.656806030439342
2006	0.629840460825173
2007	0.60605145701179
2008	0.650302662030714
2009	0.738503713725377
2010	0.776519528348716
2011	0.719419085343356
2012	0.758505347321108
2013	0.720653191698584
2014	0.695645198718813