Year	2017 PPP (%)
1997	0.4
1998	0.5
1999	1.1
2000	0.7
2001	0.4
2002	0.2
2003	0.2
2004	0.2
2005	0.2
2006	0.1
2007	0
2008	0
2009	0
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0