Year	%
1995	53.39
1996	54.51
1997	54.51
1998	54.51
1999	54.51
2000	54.51
2001	54.51
2002	55.6
2003	55.6
2004	55.67
2005	55.62
2006	55.61
2007	56.52
2008	56.51
2009	56.51
2010	56.51
2011	56.51
2013	57.46
2015	57.58
2016	57.58
2017	57.61
2018	57.61
2019	57.61
2020	57.61
2021	57.61