Year	2017 PPP (%)
1963	0.9
1964	1
1965	0.8
1966	0.7
1967	0.6
1968	0.6
1969	0.4
1970	0.7
1971	0.6
1972	0.6
1973	0.6
1974	0.5
1975	0.4
1976	0.4
1977	0.4
1978	0.4
1979	0.4
1980	0.3
1981	0.4
1982	0.5
1983	0.4
1984	0.4
1985	0.4
1986	0.4
1987	0.3
1988	0.3
1989	0.3
1990	0.3
1991	0.3
1992	0.4
1993	0.4
1994	0.4
1995	0.4
1996	0.5
1997	0.5
1998	0.6
1999	0.5
2000	0.6
2001	0.7
2002	0.6
2003	0.8
2004	0.8
2005	0.8
2006	0.8
2007	0.8
2008	0.9
2009	0.7
2010	0.9
2011	0.8
2012	0.8
2013	0.8
2014	1
2015	0.9
2016	0.9
2017	1
2018	0.9
2019	0.8
2020	0.2
2021	0.2