Year	2017 PPP (% of population)
1986	24.9
1990	24.8
1994	18.5
1998	18
2005	5.7
2006	6
2009	6
2011	3.2
2012	2.5
2013	2.7
2014	4.5
2015	4
2016	4.2
2017	3.7
2018	4.3
2019	5.6
2020	6
2021	5
2022	3.8