Year	%
1996	4.37
1997	4.37
1998	4.37
1999	4.37
2000	4.37
2001	4.37
2002	4.4
2003	4.4
2004	4.41
2005	4.41
2006	4.41
2007	4.42
2008	4.42
2009	4.42
2010	4.42
2011	4.43
2012	4.24
2013	4.23
2014	4.23
2015	4.23
2016	4.23
2017	4.24
2019	4.24
2020	4.24
2021	4.24