Quarter	Percent
1986-04-01	22.75
1986-07-01	39.92
1986-10-01	39.09
1987-01-01	30.18
1987-04-01	34.35
1987-07-01	44.21
1987-10-01	42.36
1988-01-01	62.45
1988-04-01	63.10
1988-07-01	64.14
1988-10-01	46.77
1989-01-01	39.97
1989-04-01	45.53
1989-07-01	34.69
1989-10-01	26.87
1990-01-01	42.58
1990-04-01	61.64
1990-07-01	54.99
1990-10-01	62.72
1991-01-01	104.27
1991-04-01	72.05
1991-07-01	62.76
1991-10-01	59.87
1992-01-01	63.76
1992-04-01	68.49
1992-07-01	63.31
1992-10-01	67.77
1993-01-01	66.94
1993-04-01	59.47
1993-07-01	57.48
1993-10-01	69.63
1994-01-01	350.53
1994-04-01	53.94
1994-07-01	69.14
1994-10-01	92.04
1995-01-01	66.00
1995-04-01	57.77
1995-07-01	73.15
1995-10-01	106.31
1996-01-01	89.94
1996-04-01	65.30
1996-07-01	73.87
1996-10-01	73.99
1997-01-01	65.12
1997-04-01	70.53
1997-07-01	75.23
1997-10-01	78.04
1998-01-01	80.60
1998-04-01	65.75
1998-07-01	78.85
1998-10-01	78.97
1999-01-01	76.32
1999-04-01	76.91
1999-07-01	67.51
1999-10-01	69.97
2000-01-01	39.20
2000-04-01	43.05
2000-07-01	47.44
2000-10-01	183.20
2001-01-01	81.19
2001-04-01	63.00
2001-07-01	59.03
2001-10-01	59.00
2002-01-01	54.73
2002-04-01	48.00
2002-07-01	46.00
2002-10-01	44.00
2003-01-01	44.00
2003-04-01	38.23
2003-07-01	30.66
2003-10-01	26.00
2004-01-01	22.98
2004-04-01	22.00
2004-07-01	20.44
2004-10-01	18.69
2005-01-01	15.57
2005-04-01	14.30
2005-07-01	14.25
2005-10-01	13.57
2006-01-01	13.50
2006-04-01	15.00
2006-07-01	17.50
2006-10-01	17.50
2007-01-01	17.50
2007-04-01	17.50
2007-07-01	17.36
2007-10-01	15.96
2008-01-01	15.25
2008-04-01	16.00
2008-07-01	16.75
2008-10-01	15.63
2009-01-01	11.03
2009-04-01	9.03
2009-07-01	7.58
2009-10-01	6.50
2010-01-01	6.50
2010-04-01	6.50
2010-07-01	6.38
2010-10-01	1.63
2011-01-01	1.50
2011-04-01	1.50
2011-07-01	5.00
2011-10-01	5.00
2012-01-01	5.00
2012-04-01	5.00
2012-07-01	5.00
2012-10-01	5.00
2013-01-01	4.50
2013-04-01	3.50
2013-07-01	3.50
2013-10-01	3.50
2014-01-01	8.00
2014-04-01	8.00
2014-07-01	7.50
2014-10-01	7.50
2015-01-01	7.25
2015-04-01	7.25
2015-07-01	7.25
2015-10-01	7.25
2016-01-01	7.25
2016-04-01	7.25
2016-07-01	7.25
2016-10-01	7.25
2017-01-01	7.25
2017-04-01	7.25
2017-07-01	7.25
2017-10-01	7.25
2018-01-01	7.25
2018-04-01	16.25