Year	%
1997	14.36
1998	14.36
2000	14.36
2003	14.36
2005	14.04
2006	14.04
2007	14.04
2008	13.5
2009	13.5
2010	13.5
2011	13.5
2012	14.47
2013	14.47
2014	14.47
2015	14.47
2016	14.47
2018	14.67
2019	14.67
2020	14.67
2021	14.67