Year	%
2000	20.4
2001	20.4
2002	20.4
2003	20.28
2004	20.28
2005	20.28
2006	20.28
2007	20.42
2008	20.42
2009	20.42
2010	20.41
2011	20.42
2012	20.44
2013	20.43
2014	20.43
2015	20.44
2016	20.44
2017	20.45
2020	20.45