Year	$ 2017 PPP (%)
1994	0.52
1996	0.45
1998	0.27
2000	0.33
2002	0.08
2004	0.12
2006	0.04
2007	0.03
2008	0.02
2009	0.02
2010	0.01
2011	0.01
2012	0.04
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0
2021	0