Year	$ 2017 PPP (%)
2002	13.51
2003	7.82
2004	5.88
2005	2.38
2006	1.71
2007	1.15
2008	0.73
2009	0.93
2010	0.45
2011	0.39
2012	0.4
2013	0.29
2014	0.3
2015	0.84
2016	0.89
2017	0.54
2018	0.5
2019	0.26