Year	2017 PPP (%)
1997	9.5
1998	12.1
1999	17.9
2000	14.9
2001	11.4
2002	9.1
2003	8.8
2004	7.6
2005	6.4
2006	5
2007	3.5
2008	2.1
2009	2
2010	1.6
2011	1.3
2012	1.2
2013	1.1
2014	1
2015	1.1
2016	1.1
2017	1.1
2018	1
2019	0.8
2020	0.8