Year	2011 PPP (% of population)
1993	0
1995	0
1996	1.6
2004	2.5
2005	2.2
2006	1.5
2007	0.5
2008	1.2
2009	1.7
2010	1.7
2011	1
2012	1
2013	1.2
2014	0.7
2015	0.7