Year	2011 PPP (%)
1987	10.7
1990	7.8
1992	5.1
1994	5.1
1996	3.8
1998	3.6
2000	4.4
2003	4.1
2006	2.5
2009	2.6
2011	1.6
2013	0.9
2015	1.3
2017	0.7