Year	2017 PPP (% of population)
1990	99
1993	97.9
1996	95.5
1999	93.1
2002	86.9
2005	78.5
2008	69.5
2010	62.5
2011	58.9
2012	54.1
2013	47.3
2014	42.3
2015	37.9
2016	34.2
2017	32
2018	28.1
2019	24.7
2020	24.7