Year	2011 PPP (% of population)
1993	7
2004	2.7
2005	1.7
2006	1.5
2007	1.2
2008	1.5
2009	2.2
2010	1.5
2011	0.7
2012	1
2013	0.7
2014	1.2
2015	0.7