Year	2017 PPP (% of population)
1996	7.9
2001	12.8
2002	8.9
2003	6.2
2004	3.3
2005	8.7
2006	1
2007	0.4
2008	0.2
2009	0.2
2010	0.2
2011	0.1
2012	0
2013	0
2014	0
2015	0
2016	0.1
2017	0
2018	0
2019	0
2020	0
2021	0