Year	2017 PPP (% of population)
2009	1.6
2010	2.2
2011	1.8
2012	2
2013	2
2014	1.7
2015	1.3
2016	1.3
2017	1.1
2018	0.7
2019	0.6
2020	0.7
2021	0.4