Year	%
1993	10.75
1996	8.88
1997	8.82
1998	8.88
1999	8.78
2000	8.45
2001	9.15
2002	8.79
2003	9.01
2004	7.78
2005	7.26
2006	9.25
2007	9.23
2008	9.13
2009	9.15
2010	8.88
2011	8.07
2012	8.18
2013	7.74
2015	7.66
2016	8.02
2017	7.15
2019	8.54
2020	8.83
2021	8.91