Year	%
1995	63.65
1997	63.63
2001	63.61
2002	63.61
2003	62.98
2004	62.98
2005	62.98
2006	62.98
2007	62.34
2008	62.34
2009	62.34
2010	62.34
2011	62.34
2012	62.34
2013	61.54
2015	61.54
2016	61.54
2017	61.54