Year	2011 PPP (% of population)
1989	19.2
1992	23.3
1994	23.7
1996	39.1
1998	31
2000	21.4
2002	19
2004	16
2005	16.1
2006	13.1
2008	14.5
2010	12.8
2012	12.2
2014	12
2016	7.9