Year	$ 2017 PPP (%)
1996	0.03
2006	0
2007	0
2008	0
2009	0
2010	0.01
2011	0
2012	0.02
2013	0.03
2014	0.01
2015	0.01
2016	0.03
2017	0.02
2018	0.03
2019	0.01