Year	%
1993	9.44
1994	9.95
1995	9.49
1996	9.31
1997	9.31
1998	9.04
1999	9.14
2000	8.46
2001	8.71
2002	9.25
2003	8.56
2004	8.96
2005	8.67
2006	8.44
2007	8.43
2008	8.48
2009	8.59
2010	8.96
2011	8.8
2012	8.92
2013	8.55
2014	8.56
2015	8.89
2016	8.89
2017	9.63
2018	9.27
2019	9.27
2020	10.1
2021	10.19