Year	Kg co2 per 2011 PPP of GDP
1990	1.40956
1991	1.35473
1992	1.24384
1993	1.16878
1994	1.09833
1995	1.07476
1996	1.01974
1997	0.93529
1998	0.83103
1999	0.77039
2000	0.72874
2001	0.68891
2002	0.69692
2003	0.74689
2004	0.78185
2005	0.79084
2006	0.77683
2007	0.73229
2008	0.71742
2009	0.69467
2010	0.68871
2011	0.69735
2012	0.66615
2013	0.63234
2014	0.59128