Year	2017 PPP (% of population)
1995	93.8
1996	93.5
1997	93.2
1998	92.5
1999	93.1
2000	93.1
2001	92.9
2002	93
2003	93.1
2004	92.3
2005	92
2006	91.8
2007	91.4
2008	91
2009	91.1
2010	90.7
2011	90.5
2012	91.1
2013	91.7
2014	91.8
2015	92.1
2016	92.1
2017	91.7