Year	2017 PPP (% of population)
2004	0.4
2005	1.5
2006	0.3
2007	0.4
2008	0.2
2009	0.2
2010	0.3
2011	0.3
2012	1
2013	0.9
2014	1.1
2015	1.3
2016	1.9
2017	1.5
2018	0.7
2019	0.9
2020	0.8
2021	0.8