Quarter	Percent
1990-07-01	14.00
1990-10-01	12.58
1991-01-01	12.00
1991-04-01	10.50
1991-07-01	9.55
1991-10-01	8.50
1992-01-01	7.50
1992-04-01	6.50
1992-07-01	5.75
1992-10-01	5.75
1993-01-01	5.60
1993-04-01	5.25
1993-07-01	4.75
1993-10-01	4.75
1994-01-01	4.75
1994-04-01	4.75
1994-07-01	5.50
1994-10-01	7.05
1995-01-01	7.50
1995-04-01	7.50
1995-07-01	7.50
1995-10-01	7.50
1996-01-01	7.50
1996-04-01	7.50
1996-07-01	7.00
1996-10-01	6.18
1997-01-01	6.00
1997-04-01	5.50
1997-07-01	5.00
1997-10-01	5.00
1998-01-01	5.00
1998-04-01	5.00
1998-07-01	5.00
1998-10-01	4.76
1999-01-01	4.75
1999-04-01	4.75
1999-07-01	4.75
1999-10-01	5.00
2000-01-01	5.50
2000-04-01	6.00
2000-07-01	6.25
2000-10-01	6.25
2001-01-01	5.55
2001-04-01	5.00
2001-07-01	4.78
2001-10-01	4.28
2002-01-01	4.25
2002-04-01	4.72
2002-07-01	4.75
2002-10-01	4.75
2003-01-01	4.75
2003-04-01	4.75
2003-07-01	4.75
2003-10-01	5.23
2004-01-01	5.25
2004-04-01	5.25
2004-07-01	5.25
2004-10-01	5.25
2005-01-01	5.49
2005-04-01	5.50
2005-07-01	5.50
2005-10-01	5.50
2006-01-01	5.50
2006-04-01	5.75
2006-07-01	6.00
2006-10-01	6.25
2007-01-01	6.25
2007-04-01	6.25
2007-07-01	6.50
2007-10-01	6.75
2008-01-01	7.22
2008-04-01	7.25
2008-07-01	7.02
2008-10-01	4.35
2009-01-01	3.25
2009-04-01	3.00
2009-07-01	3.00
2009-10-01	3.74
2010-01-01	3.98
2010-04-01	4.50
2010-07-01	4.50
2010-10-01	4.75
2011-01-01	4.75
2011-04-01	4.75
2011-07-01	4.75
2011-10-01	4.30
2012-01-01	4.25
2012-04-01	3.54
2012-07-01	3.50
2012-10-01	3.03
2013-01-01	3.00
2013-04-01	2.75
2013-07-01	2.50
2013-10-01	2.50
2014-01-01	2.50
2014-04-01	2.50
2014-07-01	2.50
2014-10-01	2.50
2015-01-01	2.25
2015-04-01	2.00
2015-07-01	2.00
2015-10-01	2.00
2016-01-01	2.00
2016-04-01	1.75
2016-07-01	1.50
2016-10-01	1.50
2017-01-01	1.50
2017-04-01	1.50
2017-07-01	1.50
2017-10-01	1.50
2018-01-01	1.50
2018-04-01	1.50
2018-07-01	1.50