Year	2017 PPP (% of population)
2003	2.5
2004	1.1
2005	0.8
2006	0.8
2007	0.4
2008	0.4
2009	0.6
2010	0.8
2011	1
2012	0.7
2013	0.9
2014	0.8
2015	0.6
2016	0.5
2017	0.3
2018	0.2
2019	0.6
2020	0.3
2021	0.3