Year	2017 PPP (% of population)
2006	42.2
2007	36.2
2008	29.4
2009	27.7
2010	29.6
2011	33.5
2012	33.6
2013	32.8
2014	29.7
2015	27.4
2016	21.8
2017	16.3
2018	13
2019	10.9
2020	10
2021	7.1