Year	$ 2017 PPP (%)
1998	0.56
1999	1.11
2000	1.26
2001	0.77
2002	0.82
2003	0.49
2004	0.31
2005	0.2
2006	0.28
2007	0
2008	0
2009	0
2010	0
2011	0
2012	0
2013	0
2016	0