Year	2011 PPP (%)
1996	21.4
2001	26.7
2002	23.8
2003	20.3
2004	16.7
2005	20.3
2006	8.5
2007	5.2
2008	4.4
2009	4.7
2010	3.5
2011	1.6
2012	1.5
2013	0.9
2014	1
2015	1.2
2016	2.1
2017	1.3