Year	Kg co2 per 2011 PPP of GDP
1992	0.83688
1993	0.8545
1994	0.85631
1995	0.85813
1996	0.88008
1997	0.82114
1998	0.84976
1999	0.81767
2000	0.75633
2001	0.71951
2002	0.68673
2003	0.65942
2004	0.61445
2005	0.5823
2006	0.55646
2007	0.51197
2008	0.50048
2009	0.49832
2010	0.50608
2011	0.5074
2012	0.50822
2013	0.48505
2014	0.46167