Year	Percent
1995-01-01	17
1996-01-01	17
1997-01-01	33
1998-01-01	33
1999-01-01	36
2000-01-01	50
2001-01-01	57
2002-01-01	50
2003-01-01	50
2004-01-01	50
2005-01-01	40
2006-01-01	67
2007-01-01	67
2008-01-01	83
2009-01-01	83
2010-01-01	80
2011-01-01	80
2012-01-01	80
2013-01-01	80