Year	%
1993	13.09
1996	10.5
1997	10.44
1998	10.5
1999	10.32
2000	10.63
2001	11.14
2002	10.9
2003	11.15
2004	10.63
2005	9.94
2006	10
2007	9.99
2008	9.99
2009	10.55
2010	10.18
2011	9.95
2012	10.03
2013	9.49
2015	9.88
2016	10.05
2017	10.01
2019	10.31
2020	10.81
2021	10.98