Year	2017 PPP (% of population)
2006	18
2007	13.9
2008	10.3
2009	9.9
2010	11
2011	12.6
2012	12.8
2013	15.1
2014	13.9
2015	12.2
2016	8.9
2017	6.7
2018	5.7
2019	4.7
2020	3.9
2021	3