Year	2017 PPP (%)
1990	0.2
1992	3
1997	8
1999	13.1
2000	15.1
2001	10
2002	11
2004	4.4
2005	7.9
2006	6.3
2007	4.6
2008	3.8
2009	3.8
2011	2.2
2012	3
2013	2.3
2014	1.9
2015	2.1
2016	2.6
2017	2.1
2018	1.3
2019	0.6
2020	0.8
2021	0.6