Year	kg per 2010 US$ of GDP
1992	1.82054617856034
1993	1.76926438144935
1994	1.73059989204309
1995	1.6997066100971
1996	1.66217752438607
1997	1.51478163041286
1998	1.51719799757464
1999	1.49253161018281
2000	1.40148028674116
2001	1.36609783311745
2002	1.30298250294114
2003	1.27574963069171
2004	1.19046416582059
2005	1.11788523230352
2006	1.07258949009753
2007	1.01032672625327
2008	0.985297428393346
2009	0.953300023562913
2010	0.972350513974225
2011	0.962065438091046
2012	0.946511968428621
2013	0.884938625943845
2014	0.835738130382396