Year	$ 2017 PPP (%)
2000	1.98
2006	1.43
2008	1.32
2009	1.05
2010	1.24
2011	0.99
2012	0.85
2013	0.87
2014	0.74
2015	0.56
2016	0.59
2017	0.56
2018	0.54
2019	0.42
2020	0.8
2021	0.87