Year	%
1996	5.11
1997	5.11
1998	5.11
1999	5.11
2000	5.11
2001	5.1
2002	5.1
2003	5.1
2004	5.1
2005	5.2
2006	5.2
2007	5.2
2008	5.2
2010	5.07
2011	5.07
2012	5.02
2013	5.02
2015	5.02
2019	6
2021	5.99