Year	2017 PPP (% of population)
1999	11.9
2001	14
2002	10
2003	7.5
2004	5.3
2005	2.6
2006	2
2007	1.5
2008	0.9
2009	1.2
2010	1
2011	1.2
2012	0.8
2013	1.7
2014	1.4
2015	1.1
2016	1.1
2017	0.8
2018	1.3
2019	1
2020	0.4
2021	0.5
2022	0.8