Year	%
1996	74.72
1997	74.72
1999	74.72
2000	74.72
2001	74.72
2002	73.8
2003	73.8
2004	73.8
2005	73.8
2006	73.8
2007	74.46
2008	74.46
2009	74.46
2010	74.46
2011	74.36
2012	74.36
2013	74.36
2015	74.34
2016	74.34
2017	74.4
2018	74.4
2019	74.39
2020	74.39
2021	74.39