Year	$ 2017 PPP (%)
2002	0.51
2003	0.17
2004	0.18
2005	0.03
2006	0.01
2007	0
2008	0.01
2009	0.01
2010	0
2011	0.01
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0.17
2019	0