Year	Percent
1995-01-01	29
1996-01-01	29
1997-01-01	29
1998-01-01	29
1999-01-01	25
2000-01-01	13
2001-01-01	13
2002-01-01	13
2003-01-01	13
2004-01-01	25
2005-01-01	38
2006-01-01	38
2007-01-01	38
2008-01-01	50
2009-01-01	50
2010-01-01	50
2011-01-01	50
2012-01-01	50
2013-01-01	50