Year	2011 PPP (% of population)
1989	7.1
1992	9.5
1994	9.9
1996	20.7
1998	15.9
2000	9.1
2002	6.7
2004	6
2005	6.7
2006	4.2
2008	5.5
2010	4.6
2012	3.9
2014	3.8
2016	2.2