Year	%
1996	73.45
1997	73.45
1999	73.45
2000	73.45
2001	73.45
2002	72.35
2003	72.35
2004	72.35
2005	72.35
2006	72.35
2007	73.37
2008	73.37
2009	73.37
2010	73.37
2011	73.55
2012	73.55
2013	73.55
2015	73.52
2016	73.52
2017	73.62
2018	73.62
2019	73.62
2020	73.62
2021	73.62