Year	%
1993	13.97
1996	12.13
1997	12.06
1998	12.13
1999	12
2000	11.85
2001	12.1
2002	11.94
2003	12.1
2004	11.33
2005	11.18
2006	11.14
2007	11.16
2008	11.08
2009	10.66
2010	10.53
2011	10.57
2012	10.56
2013	10.1
2015	9.65
2016	10.01
2017	9.8
2019	10.4
2020	10.4
2021	10.29