Year	2011 PPP (% of population)
1985	0.2
1987	0.1
1989	0.1
2004	2.2
2005	1
2006	0.7
2007	0.5
2008	0.2
2009	0.2
2010	0.2
2011	0.2
2012	0.2
2013	0.5
2014	0.5
2015	0.5