Year	Percent
1995-01-01	30
1996-01-01	30
1997-01-01	30
1998-01-01	30
1999-01-01	33
2000-01-01	33
2001-01-01	50
2002-01-01	63
2003-01-01	63
2004-01-01	71
2005-01-01	71
2006-01-01	71
2007-01-01	71
2008-01-01	75
2009-01-01	75
2010-01-01	75
2011-01-01	75
2012-01-01	75
2013-01-01	75