Year	Percent
1995-01-01	17
1996-01-01	17
1997-01-01	17
1998-01-01	17
1999-01-01	17
2000-01-01	17
2001-01-01	17
2002-01-01	17
2003-01-01	17
2004-01-01	17
2005-01-01	17
2006-01-01	20
2007-01-01	25
2008-01-01	50
2009-01-01	50
2010-01-01	50
2011-01-01	50
2012-01-01	50
2013-01-01	50