Year	kg per 2010 US$ of GDP
1994	0.533515943684463
1995	0.560448748919154
1996	0.555198426793453
1997	0.439941314341457
1998	0.294902072577838
1999	0.309513868496642
2000	0.313881656463491
2001	0.299044159041635
2002	0.27850353073469
2003	0.343321185345749
2004	0.358917989913695
2005	0.348243503391193
2006	0.257429287560033
2007	0.2621022762777
2008	0.207780081586885
2009	0.247819907184949
2010	0.242499016689436
2011	0.258195179960198