Year	Percent
1995-01-01	45
1996-01-01	47
1997-01-01	47
1998-01-01	50
1999-01-01	50
2000-01-01	47
2001-01-01	47
2002-01-01	47
2003-01-01	47
2004-01-01	47
2005-01-01	44
2006-01-01	44
2007-01-01	44
2008-01-01	41
2009-01-01	42
2010-01-01	45
2011-01-01	45
2012-01-01	43
2013-01-01	47