Year	%
1996	35.28
1997	35.28
1999	35.28
2000	35.28
2001	35.28
2002	38.32
2003	35.93
2004	35.88
2005	35.87
2006	35.83
2007	35.68
2008	35.59
2009	35.61
2010	35.59
2011	35.5
2012	35.43
2013	35.4
2015	35.22
2016	35.22
2017	35.26
2018	35.26
2019	35.26
2020	35.26
2021	35.26