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