Year	%
1996	57.46
1997	57.46
1999	57.54
2000	57.54
2001	57.54
2002	57.54
2003	56.53
2004	56.53
2005	56.53
2006	56.53
2007	55.48
2008	55.48
2009	55.48
2010	55.48
2011	55.48
2012	55.48
2013	55.48
2014	55.48
2015	53.83
2016	53.83
2017	54.57
2018	54.57
2019	54.53
2020	54.53
2021	54.53