Year	2011 PPP (%)
1996	7
2001	10
2002	7.6
2003	5.7
2004	3.6
2005	7.1
2006	1.2
2007	0.5
2008	0.4
2009	0.4
2010	0.3
2011	0.1
2012	0.1
2013	0
2014	0
2015	0.1
2016	0.1
2017	0.1