Year	Percent
1995-01-01	80
1996-01-01	80
1997-01-01	80
1998-01-01	80
1999-01-01	80
2000-01-01	80
2001-01-01	80
2002-01-01	80
2003-01-01	80
2004-01-01	80
2005-01-01	80
2006-01-01	80
2007-01-01	80
2008-01-01	60
2009-01-01	60
2010-01-01	60
2011-01-01	60
2012-01-01	60
2013-01-01	60