Year	Kg co2 per 2011 PPP of GDP
1990	0.24131
1991	0.24426
1992	0.24864
1993	0.26142
1994	0.26959
1995	0.28876
1996	0.3057
1997	0.32423
1998	0.31031
1999	0.318
2000	0.31333
2001	0.32517
2002	0.32794
2003	0.32981
2004	0.33601
2005	0.32818
2006	0.31844
2007	0.3025
2008	0.29737
2009	0.31741
2010	0.31103
2011	0.3045
2012	0.30258
2013	0.29813
2014	0.31109