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