Year	$ 2017 PPP (%)
1999	20.48
2001	17.1
2002	15.91
2003	13.95
2004	12.93
2005	8.12
2006	5.07
2007	4.84
2008	2.84
2009	5.69
2010	9.6
2011	8.99
2012	7.04
2013	6.56
2014	7.07
2015	6.09
2016	7.6
2017	9.67
2019	9.81
2020	18.89
2021	6.31