Year	2017 PPP (% of population)
2006	28.5
2007	15
2008	11.3
2009	11
2010	13.4
2011	14.1
2012	14.1
2013	13.2
2014	11
2015	14.1
2016	10.4
2017	9.4
2018	8
2019	7.2
2020	4.5
2021	5.8