Year	$ 2017 PPP (%)
2001	0.09
2002	0.01
2003	0.05
2004	0.06
2005	0
2006	0.03
2007	0.04
2008	0
2009	0
2010	0
2011	0
2012	0
2013	0
2015	0
2017	0
2018	0.02