Year	$ 2017 PPP (%)
1998	2.28
1999	3.41
2000	3.64
2001	3.46
2002	2.26
2003	1.08
2004	0.57
2005	1.63
2006	0.75
2007	0.3
2008	0.13
2009	0.21
2010	0.13
2011	0.02
2012	0.04
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0.03
2020	0
2021	0.09