Year	2017 PPP (%)
1975	0.4
1981	0.3
1987	0.1
1992	0.1
1995	0.3
2000	0.1
2001	0.2
2002	0
2003	0.3
2004	0.4
2005	1
2006	0.3
2007	0.4
2008	0.6
2009	0.4
2010	0.5
2011	0.5
2012	0.4
2013	0.6
2014	0.4
2015	0.5
2016	0.3
2017	0.2
2018	0.7
2019	0.3
2020	0.4
2021	0.6