Year	Kg co2 per 2011 PPP of GDP
1990	0.58954
1991	0.56977
1992	0.66767
1993	0.63552
1994	0.63277
1995	0.53713
1996	0.48234
1997	0.45137
1998	0.43402
1999	0.48612
2000	0.44095
2001	0.39325
2002	0.41003
2003	0.43994
2004	0.41579
2005	0.50064
2006	0.50305
2007	0.49408
2008	0.47168
2009	0.30363
2010	0.37437
2011	0.39874
2012	0.28306
2013	0.4019
2014	0.40514