Year	2011 PPP (%)
1998	11.7
1999	10.5
2000	7.6
2001	3.8
2002	2.6
2003	2.1
2004	0.8
2005	0.5
2006	0.2
2007	0.2
2008	0.1
2009	0.1
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0