Year	2011 PPP (%)
1998	24.2
2000	32.2
2001	28.9
2002	27.8
2003	24.6
2004	14
2005	15.7
2006	10.9
2007	10.2
2008	5.8
2009	4.1
2010	5.7
2011	4
2012	4.7
2013	5.6
2014	3.5
2015	4.7
2016	3.4
2017	3.5