Year	2017 PPP (%)
1980	16.7
1988	11.9
1989	11.8
1991	10.4
1992	9.9
1996	16.2
1999	19
2000	16.9
2001	18.8
2002	12.1
2003	11.6
2004	10.7
2005	9.5
2008	9.8
2009	8.6
2010	7.5
2011	6.4
2012	6.2
2013	5.7
2014	5.2
2015	4.7
2016	4.7
2017	4.3
2018	4.4
2019	5
2020	8.5
2021	6.6
2022	5.5