Year	%
2001	9.13
2002	10.05
2005	8.09
2007	7.56
2008	7.64
2009	5.25
2010	4.65
2011	4.02
2013	7.29
2015	2.67
2016	2.7
2017	2.78
2018	2.76
2021	3.08