Year	2017 PPP (% of population)
1986	9.1
1990	8.4
1994	4.5
1998	4.5
2005	1
2006	0.8
2009	1.5
2011	0.5
2012	0.3
2013	0.3
2014	0.6
2015	0.4
2016	0.4
2017	0.3
2018	0.7
2019	0.7
2020	0.8
2021	0.7
2022	0.5