Year	Kg co2 per 2011 PPP of GDP
1990	0.34661
1991	0.37294
1992	0.37295
1993	0.39872
1994	0.39874
1995	0.36848
1996	0.4108
1997	0.43911
1998	0.47707
1999	0.46306
2000	0.51018
2001	0.50727
2002	0.51681
2003	0.51593
2004	0.53773
2005	0.50072
2006	0.53656
2007	0.55906
2008	0.56841
2009	0.59926
2010	0.56293
2011	0.55622
2012	0.53763
2013	0.52268
2014	0.52667