Year	%
2001	11.8
2002	8.02
2005	6.83
2007	7.08
2008	7.12
2009	6.65
2010	6.45
2011	6.41
2013	5.95
2015	6.11
2016	6.31
2017	6.32
2018	6.26
2021	6.25