Year	2017 PPP (% of population)
2003	5.5
2004	3.2
2005	1.9
2006	1.4
2007	0.9
2008	0.9
2009	1.2
2010	1.8
2011	1.6
2012	1.5
2013	1.6
2014	1.4
2015	0.9
2016	0.7
2017	0.6
2018	0.5
2019	0.9
2020	0.5
2021	0.4