Year	%
1995	59.12
1996	59.11
1997	59.11
1998	59.11
1999	59.11
2001	59.11
2002	59.11
2003	59.49
2004	59.49
2005	59.49
2006	59.49
2007	58.5
2008	58.5
2009	58.5
2010	58.5
2011	58.5
2012	58.5
2013	58.5
2014	58.5
2015	56.98
2016	56.98
2017	57.77
2018	57.77
2019	57.73
2020	57.73
2021	57.73