Year	2011 PPP (%)
1986	11.4
1989	24.6
1992	15.5
1996	12.2
1997	11.6
2000	11.6
2001	11.1
2002	12.3
2003	15.2
2004	19
2005	14.3
2006	12.6
2007	12.3
2008	12.4
2009	11.2
2010	11
2011	10.4
2012	10.5
2013	9.9
2014	8.2
2015	6.9
2016	6.3