Year	%
1993	9.3
1994	9.94
1995	9.37
1996	9.12
1997	9.12
1998	8.86
1999	8.96
2000	8.15
2001	8.61
2002	8.98
2003	8.12
2004	8.66
2005	8.35
2006	8.08
2007	8.08
2008	8.12
2009	8.18
2010	8.65
2011	8.41
2012	8.57
2013	8.21
2014	8.22
2015	8.64
2016	8.64
2017	9.18
2018	8.77
2019	8.77
2020	9.6
2021	9.76