Year	%
1997	7.04
2001	7.04
2002	7.04
2003	7.04
2004	6.35
2005	6.35
2006	6.35
2007	5.38
2008	5.38
2009	5.38
2010	5.38
2011	5.38
2012	5.15
2013	5.15
2015	5.15
2016	5.15
2018	5.1
2020	5.1
2021	5.1