Year	Kg co2 per 2011 PPP of GDP
1990	0.3461
1991	0.33404
1992	0.32498
1993	0.31215
1994	0.28304
1995	0.29795
1996	0.31684
1997	0.28803
1998	0.24937
1999	0.25333
2000	0.25582
2001	0.2517
2002	0.34996
2003	0.36203
2004	0.36699
2005	0.3814
2006	0.24894
2007	0.35112
2008	0.32516
2009	0.34024
2010	0.23319
2011	0.21689
2012	0.33831
2013	0.32351
2014	0.31921