Year	2011 PPP (%)
1980	0.4
1986	0
1987	0
1991	1.3
1992	2
1993	2.3
1994	2.3
1995	3.9
1996	4.5
1997	4
1998	4.2
1999	4.5
2000	5.4
2001	8.2
2002	11.7
2003	5.9
2004	4.4
2005	3.5
2006	3
2007	2.5
2008	2.4
2009	2.2
2010	2
2011	0.8
2012	0.9
2013	0.8
2014	0.8
2016	0.8
2017	0.7