Year	2017 PPP (%)
1970	0
1975	0.1
1979	0.1
1984	0.2
1990	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0.1
2004	0
2005	0
2006	0
2007	0
2008	0
2009	0
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0.1
2016	0.1
2017	0
2018	0
2019	0
2020	0.1
2021	0