Year	kg per 2011 PPP $ of GDP
1994	0.556035285838102
1995	0.488507368481783
1996	0.321016395917556
1997	0.470950441446289
1998	0.514184685043265
1999	0.459565562488804
2000	0.578757224664479
2001	0.537262405397433
2002	0.546064971372441
2003	0.531928673702352
2004	0.540175365221798
2005	0.515571491226168
2006	0.530137643048969
2007	0.503321450035824
2008	0.545048758712352
2009	0.577258178204533
2010	0.5880789890387
2011	0.653974560220143
2012	0.614448176410388
2013	0.591235148620393
2014	0.59283582369757