Year	2017 PPP (% of population)
2004	7.3
2005	4.4
2006	2.9
2007	1.9
2008	2.3
2009	4.3
2010	3.2
2011	1.6
2012	2
2013	2
2014	2.7
2015	1.4
2016	2.2
2017	1.5
2018	1.3
2019	0.7
2020	0.6
2021	0.4