Year	%
1993	10
1994	10
1995	10
1996	10
1997	10
1998	10
1999	9.99
2000	9.58
2001	9.04
2002	10.3
2003	10
2004	10
2005	9.71
2006	9.7
2007	9.74
2008	9.68
2009	10.01
2010	10.07
2011	10.02
2012	9.99
2013	9.41
2014	9.84
2015	9.89
2016	9.85
2017	13.1
2018	13.22
2019	13.22
2020	12.94
2021	13.08