Year	2017 PPP (% of population)
1992	94.3
1997	89
2002	88.9
2004	84.2
2006	79.8
2008	77.7
2010	46.7
2012	40.7
2014	34.9
2016	27.1
2018	22.2
2020	18.7
2022	19.7