Year	2011 PPP (% of population)
1985	0.6
1987	0.5
1989	0.2
2004	4.7
2005	2.5
2006	1.7
2007	1.2
2008	0.7
2009	1
2010	1
2011	0.7
2012	0.7
2013	1
2014	1
2015	0.7