Year	2017 PPP (% of population)
1989	23.5
1992	20.9
1994	21.7
1996	32.1
1998	30.6
2000	23.6
2002	20.6
2004	17.7
2005	17.8
2006	15
2008	16.6
2010	14.3
2012	13.5
2014	13.1
2016	8.9
2018	7.8
2020	8.2
2022	4.7