Year	%
2001	16.9
2002	16.9
2003	16.22
2004	16.22
2005	16.22
2006	16.22
2007	15.16
2008	15.16
2009	15.16
2010	15.16
2011	15.16
2012	15.16
2013	15.16
2014	15.16
2015	14.64
2016	14.64
2017	14.67
2018	14.67
2019	14.67
2020	14.67
2021	14.67