Year	2017 PPP (%)
1984	15
1987	14.9
1989	14.4
1992	13.6
1995	13.3
1997	9.3
2003	9.5
2006	6.8
2008	6.9
2011	3.3
2013	1.4
2015	1
2018	0.6
2021	0.4