Quarter	Percent
1983-07-01	14.00
1983-10-01	14.00
1984-01-01	14.00
1984-04-01	14.00
1984-07-01	14.00
1984-10-01	14.00
1985-01-01	14.00
1985-04-01	14.00
1985-07-01	13.00
1985-10-01	13.00
1986-01-01	13.00
1986-04-01	13.00
1986-07-01	12.00
1986-10-01	12.00
1987-01-01	10.50
1987-04-01	10.50
1987-07-01	10.50
1987-10-01	10.50
1988-01-01	12.00
1988-04-01	12.00
1988-07-01	12.00
1988-10-01	14.00
1989-01-01	14.00
1989-04-01	14.00
1989-07-01	14.00
1989-10-01	17.00
1990-01-01	17.00
1990-04-01	21.00
1990-07-01	21.00
1990-10-01	22.00
1991-01-01	22.00
1991-04-01	22.00
1991-07-01	22.00
1991-10-01	22.00
1992-01-01	22.00
1992-04-01	22.00
1992-07-01	22.00
1992-10-01	21.00
1993-01-01	20.00
1993-04-01	19.00
1993-07-01	22.00
1993-10-01	22.00
1994-01-01	22.00
1994-04-01	25.00
1994-07-01	25.00
1994-10-01	25.00
1995-01-01	28.00
1995-04-01	28.00
1995-07-01	28.00
1995-10-01	28.00
1996-01-01	27.00
1996-04-01	26.00
1996-07-01	24.50
1996-10-01	23.00
1997-01-01	21.50
1997-04-01	21.50
1997-07-01	20.50
1997-10-01	20.50
1998-01-01	20.00
1998-04-01	19.00
1998-07-01	18.00
1998-10-01	17.00
1999-01-01	16.00
1999-04-01	15.50
1999-07-01	15.50
1999-10-01	14.50
2000-01-01	12.00
2000-04-01	11.00
2000-07-01	11.00
2000-10-01	11.00
2001-01-01	11.00
2001-04-01	11.00
2001-07-01	11.00
2001-10-01	9.75
2002-01-01	8.50
2002-04-01	9.00
2002-07-01	9.50
2002-10-01	8.50
2003-01-01	6.50
2003-04-01	9.50
2003-07-01	9.50
2003-10-01	12.50
2004-01-01	12.25
2004-04-01	11.50
2004-07-01	11.00
2004-10-01	9.50
2005-01-01	7.75
2005-04-01	7.00
2005-07-01	6.00
2005-10-01	6.00
2006-01-01	6.00
2006-04-01	6.25
2006-07-01	7.75
2006-10-01	8.00
2007-01-01	8.00
2007-04-01	7.75
2007-07-01	7.50
2007-10-01	7.50
2008-01-01	8.00
2008-04-01	8.50
2008-07-01	8.50
2008-10-01	10.00
2009-01-01	9.50
2009-04-01	9.50
2009-07-01	7.50
2009-10-01	6.25
2010-01-01	5.50
2010-04-01	5.25
2010-07-01	5.25
2010-10-01	5.75
2011-01-01	6.00
2011-04-01	6.00
2011-07-01	6.00
2011-10-01	7.00
2012-01-01	7.00
2012-04-01	7.00
2012-07-01	6.50
2012-10-01	5.75
2013-01-01	5.00
2013-04-01	4.25
2013-07-01	3.60
2013-10-01	3.00
2014-01-01	2.60
2014-04-01	2.30
2014-07-01	2.10
2014-10-01	2.10
2015-01-01	1.95
2015-04-01	1.50
2015-07-01	1.35
2015-10-01	1.35
2016-01-01	1.20
2016-04-01	0.90
2016-07-01	0.90
2016-10-01	0.90
2017-01-01	0.90
2017-04-01	0.90
2017-07-01	0.90
2017-10-01	0.90
2018-01-01	0.90
2018-04-01	0.90
2018-07-01	0.90