Year	2017 PPP (% of population)
1995	64.3
1996	63.2
1997	62.3
1998	61.6
1999	60.7
2000	59.9
2001	58.5
2002	59.3
2003	57.8
2004	54.1
2005	52.3
2006	51.3
2007	50.2
2008	48.4
2009	48.6
2010	46.7
2011	45.6
2012	44.5
2013	43.9
2014	43.4
2015	44.6
2016	44.8
2017	44.5