Year	2017 PPP (%)
2000	57.5
2001	55.1
2002	54.1
2003	51.9
2004	37.3
2005	41
2006	32.2
2007	31.8
2008	25
2009	23.2
2010	25.3
2011	24
2012	25.3
2013	27
2014	23.6
2015	25.9
2016	23.6
2017	23.5
2018	20.7
2019	19.4
2020	23.3
2021	19.4