Year	$ 2017 PPP (%)
1997	10.45
1998	9.33
1999	12.33
2000	13.64
2001	13.31
2002	4.9
2003	4.73
2004	4.16
2005	4.89
2006	5.33
2007	6.97
2008	5.93
2009	6.27
2010	8.03
2011	7.94
2012	6.62
2013	5.35
2015	2.53
2016	2.76
2017	3.08
2018	2.82
2019	2.53
2020	2.26
2021	1.83