Year	%
1995	58.91
1998	58.6
2000	58.6
2002	58.6
2003	58
2004	58
2005	58
2006	58
2008	58.5
2009	58.51
2010	58.51
2011	58.52
2012	58.25
2013	58.25
2015	58.25
2016	58.25