Year	2011 PPP (%)
1989	16.4
1992	19.6
1994	19.8
1996	31.7
1998	25.6
2000	18.5
2002	16.3
2004	14.4
2005	14.5
2006	12.1
2008	13
2010	12.2
2012	11.4
2014	11.6
2016	8.2