Year	Kg co2 per 2011 PPP of GDP
1990	0.9189
1991	0.77552
1992	0.78774
1993	1.00101
1994	0.78466
1995	0.81697
1996	0.79105
1997	0.72986
1998	0.66965
1999	0.63952
2000	0.60317
2001	0.62028
2002	0.56259
2003	0.56704
2004	0.52706
2005	0.50373
2006	0.4819
2007	0.47883
2008	0.43855
2009	0.38247
2010	0.39029
2011	0.42838
2012	0.38799
2013	0.34072
2014	0.36017