Year	$ 2017 PPP (%)
1997	0.31
1998	0.53
1999	1.34
2000	0.83
2001	0.41
2002	0.21
2003	0.45
2004	0.34
2010	0.01
2011	0.03
2012	0.01
2013	0.01
2014	0