Year	%
1993	9.44
1994	9.95
1995	9.49
1996	9.31
1997	9.31
1998	9.04
1999	9.06
2000	8.46
2001	8.71
2002	9.25
2003	8.56
2004	5.48
2005	5.57
2006	4.17
2007	4.33
2008	4.04
2009	3.79
2010	5.57
2011	4.05
2012	3.86
2013	4.23
2014	4.49
2015	4.75
2016	4.75
2017	6.1
2018	4.73
2019	4.73
2020	5.18
2021	5.12