Year	Percent
1995-01-01	75
1996-01-01	75
1997-01-01	75
1998-01-01	75
1999-01-01	83
2000-01-01	83
2001-01-01	83
2002-01-01	83
2003-01-01	83
2004-01-01	83
2005-01-01	83
2006-01-01	86
2007-01-01	86
2008-01-01	86
2009-01-01	86
2010-01-01	86
2011-01-01	86
2012-01-01	71
2013-01-01	71