Year	2017 PPP (% of population)
2006	7.4
2007	5.3
2008	4.1
2009	3.1
2010	4.2
2011	5.4
2012	6.2
2013	6.6
2014	7
2015	5.3
2016	3.2
2017	3.3
2018	2.7
2019	2.2
2020	1.4
2021	1.8