Year	kg per 2010 US$ of GDP
1992	1.7760268878463
1993	1.7232390103649
1994	1.66830856097747
1995	1.63295867769391
1996	1.59278455557625
1997	1.45292601431554
1998	1.43320277391266
1999	1.40034333078192
2000	1.31248546169894
2001	1.28284771256608
2002	1.22623969908201
2003	1.20365750774232
2004	1.12788274407572
2005	1.06320767381654
2006	1.02440715477959
2007	0.963680937043068
2008	0.938507271854203
2009	0.901324598678407
2010	0.920622714566103
2011	0.908740027217694
2012	0.890749711915298
2013	0.83864124296968
2014	0.789735308144657