Year	%
2000	16.21
2001	16.21
2002	16.21
2003	16.18
2004	16.18
2005	16.18
2006	16.18
2007	16.23
2008	16.22
2009	16.22
2010	16.22
2011	16.22
2012	16.33
2013	16.33
2014	16.33
2015	16.31
2016	16.31
2017	16.35
2020	16.35