Year	Kg co2 per 2011 PPP of GDP
1990	0.29733
1991	0.32897
1992	0.33167
1993	0.36764
1994	0.34502
1995	0.40477
1996	0.38086
1997	0.3533
1998	0.34888
1999	0.31071
2000	0.33249
2001	0.35679
2002	0.33385
2003	0.37342
2004	0.36201
2005	0.36605
2006	0.33321
2007	0.34545
2008	0.36379
2009	0.36005
2010	0.36819
2011	0.35277
2012	0.33189
2013	0.34281
2014	0.33202