Year	2011 PPP (%)
1984	9.3
1987	8.7
1990	7.2
1993	8.1
1996	7.6
1999	5.2
2002	4.8
2005	4.4
2008	3.9
2010	3.1
2011	3.2
2012	3.1
2013	3.1
2015	4.4