Year	%
1993	9.73
1994	9.96
1995	9.67
1996	9.61
1997	9.61
1998	9.6
1999	9.51
2000	9.23
2001	9.27
2002	9.87
2003	9.08
2004	7.76
2005	7.19
2006	6.48
2007	6.21
2008	6.22
2009	7.5
2010	9.76
2011	9.09
2012	9.29
2013	9.93
2014	10.04
2015	10.05
2016	10.05
2017	10.33
2018	9.95
2019	9.95
2020	9.95
2021	9.83