Year	Kg co2 per 2011 PPP of GDP
1990	1.13696
1991	1.10655
1992	1.26644
1993	1.20589
1994	1.12993
1995	1.05377
1996	1.18976
1997	0.98848
1998	0.95047
1999	1.03728
2000	1.02603
2001	1.0889
2002	1.09558
2003	1.06993
2004	1.0359
2005	1.11303
2006	1.09978
2007	1.1187
2008	1.0561
2009	1.11729
2010	1.15457
2011	1.1338
2012	1.08319
2013	1.09917
2014	1.09561