Year	2011 PPP (% of population)
1991	0
1994	0.2
1995	0.2
1998	0
2000	0
2001	0
2002	0.2
2003	0.2
2004	0
2005	0
2006	0
2007	0
2008	0
2009	0
2010	0
2011	0
2013	0
2015	0