Year	2011 PPP (%)
1990	5.4
1995	19.6
1997	17
1999	16.9
2001	16
2002	22.2
2003	17
2004	14.8
2005	13.7
2006	16.5
2007	14.7
2008	12.2
2009	12.6
2010	11.8
2011	11.2
2012	8.9
2013	6.6
2014	7
2015	6.7
2016	6.7
2017	5.8