Year	2011 PPP (%)
1990	1.1
1997	10
1999	15.3
2000	17.6
2001	12.3
2002	13.4
2004	6
2005	9.9
2006	8
2007	6
2008	5
2009	5
2011	3.1
2012	4
2013	3.1
2014	2.6
2015	2.8
2016	3
2017	2.5