Year	2011 PPP (%)
1999	4.1
2001	4.4
2002	3.2
2003	2
2004	1.8
2005	0.9
2006	0.6
2007	0.5
2008	0.3
2009	0.3
2010	0.3
2011	0.3
2012	0.3
2013	0.5
2014	0.4
2015	0.4
2016	0.3
2017	0.2