Year	Kg co2 per 2011 PPP of GDP
1990	0.32376
1991	0.34456
1992	0.34795
1993	0.36338
1994	0.35537
1995	0.31251
1996	0.34013
1997	0.32732
1998	0.34003
1999	0.32289
2000	0.33192
2001	0.31649
2002	0.31395
2003	0.33804
2004	0.30598
2005	0.30178
2006	0.29976
2007	0.30092
2008	0.30321
2009	0.29192
2010	0.2738
2011	0.26292
2012	0.25273
2013	0.23094
2014	0.23871