Year	%
2001	10.43
2002	10.97
2003	10.45
2004	10.53
2005	10.42
2006	10.28
2007	10.47
2008	10.47
2009	10.27
2010	10.41
2011	9.98
2012	9.63
2013	9.63
2014	9.81
2015	9.28
2016	9.35
2017	11.84
2018	11.15
2019	9.48
2020	9.38
2021	9.47