Year	Percent
1995-01-01	50
1996-01-01	20
1997-01-01	43
1998-01-01	43
1999-01-01	38
2000-01-01	38
2001-01-01	38
2002-01-01	38
2003-01-01	50
2004-01-01	63
2005-01-01	63
2006-01-01	63
2007-01-01	75
2008-01-01	75
2009-01-01	75
2010-01-01	83
2011-01-01	83
2012-01-01	83
2013-01-01	83