Year	2017 PPP (% of population)
2009	5.1
2010	6.6
2011	7.5
2012	8.1
2013	7.8
2014	6.6
2015	5.8
2016	4.7
2017	4.2
2018	2.7
2019	2.4
2020	2.1
2021	1.8