Month	Percent
1978-01-31	6.25
1978-02-28	6.75
1978-03-31	6.6875
1978-04-30	8.1875
1978-05-31	9.4375
1978-06-30	10.0938
1978-07-31	9.5938
1978-08-31	9.375
1978-09-30	9.625
1978-10-31	11.25
1978-11-30	12.125
1978-12-31	12.5
1979-01-31	13.1875
1979-02-28	12.3125
1979-03-31	11.7813
1979-04-30	11.625
1979-05-31	11.8125
1979-06-30	13.9375
1979-07-31	14.2188
1979-08-31	14.1875
1979-09-30	14.125
1979-10-31	14.375
1979-11-30	16.875
1979-12-31	16.875
1980-01-31	17.75
1980-02-29	18.2188
1980-03-31	18.375
1980-04-30	17.125
1980-05-31	16.9688
1980-06-30	16.9375
1980-07-31	16
1980-08-31	16.6563
1980-09-30	15.6407
1980-10-31	16.6875
1980-11-30	14.5
1980-12-31	14.7813
1981-01-31	13.3438
1981-02-28	12.5938
1981-03-31	12.4375
1981-04-30	12.3125
1981-05-31	12.4688
1981-06-30	12.5
1981-07-31	14.4688
1981-08-31	13.9375
1981-09-30	16.7188
1981-10-31	15.7188
1981-11-30	14.9688
1981-12-31	15.625
1982-01-31	14.375
1982-02-28	13.8125
1982-03-31	13.375
1982-04-30	13.6875
1982-05-31	13.3125
1982-06-30	12.9375
1982-07-31	11.4688
1982-08-31	10.7813
1982-09-30	10.375
1982-10-31	9.1875
1982-11-30	10.125
1982-12-31	10.25
1983-01-31	11.5782
1983-02-28	11.2188
1983-03-31	10.6875
1983-04-30	10.0938
1983-05-31	10.1875
1983-06-30	9.6876
1983-07-31	9.875
1983-08-31	9.8282
1983-09-30	9.4688
1983-10-31	9.2813
1983-11-30	9.2033
1983-12-31	9.297
1984-01-31	9.3126
1984-02-29	9.1876
1984-03-31	8.844
1984-04-30	8.9063
1984-05-31	9.6563
1984-06-30	9.375
1984-07-31	12.1875
1984-08-31	10.5625
1984-09-30	10.5938
1984-10-31	10.3125
1984-11-30	9.6875
1984-12-31	9.8125
1985-01-31	13.4375
1985-02-28	13.8757
1985-03-31	13
1985-04-30	12.4375
1985-05-31	12.4375
1985-06-30	12.375
1985-07-31	11.3125
1985-08-31	11.4375
1985-09-30	11.375
1985-10-31	11.5
1985-11-30	11.3438
1985-12-31	11.8125
1986-01-31	12.75
1986-02-28	12.19
1986-03-31	11.25
1986-04-30	10.25
1986-05-31	9.69
1986-06-30	9.66
1986-07-31	9.88
1986-08-31	9.75
1986-09-30	11
1986-10-31	11.06
1986-11-30	11.19
1986-12-31	11.13
1987-01-31	10.94
1987-02-28	10.59
1987-03-31	9.81
1987-04-30	9.25
1987-05-31	8.69
1987-06-30	9.06
1987-07-31	9.25
1987-08-31	10.19
1987-09-30	10.125
1987-10-31	8.94
1987-11-30	8.815
1987-12-31	8.75
1988-01-31	8.595
1988-02-29	9.125
1988-03-31	8.565
1988-04-30	8.315
1988-05-31	7.5
1988-06-30	9.75
1988-07-31	10.565
1988-08-31	12
1988-09-30	11.815
1988-10-31	11.94
1988-11-30	13.03
1988-12-31	13
1989-01-31	12.94
1989-02-28	13.25
1989-03-31	12.94
1989-04-30	12.815
1989-05-31	14.065
1989-06-30	14
1989-07-31	13.815
1989-08-31	13.91
1989-09-30	14.315
1989-10-31	15.125
1989-11-30	15.125
1989-12-31	15.06
1990-01-31	15.03
1990-02-28	15.06
1990-03-31	15.16
1990-04-30	15.19
1990-05-31	15.03
1990-06-30	14.91
1990-07-31	14.97
1990-08-31	14.94
1990-09-30	14.91
1990-10-31	13.69
1990-11-30	13.41
1990-12-31	13.845
1991-01-31	13.78
1991-02-28	12.645
1991-03-31	12.265
1991-04-30	11.61
1991-05-31	11.265
1991-06-30	11.16
1991-07-31	11
1991-08-31	10.66
1991-09-30	10.22
1991-10-31	10.31
1991-11-30	10.515
1991-12-31	10.845
1992-01-31	10.47
1992-02-29	10.19
1992-03-31	10.69
1992-04-30	10.375
1992-05-31	9.895
1992-06-30	9.985
1992-07-31	10.145
1992-08-31	10.375
1992-09-30	8.845
1992-10-31	7.28
1992-11-30	7.095
1992-12-31	6.91
1993-01-31	6.11
1993-02-28	5.94
1993-03-31	5.845
1993-04-30	5.91
1993-05-31	5.78
1993-06-30	5.795
1993-07-31	5.78
1993-08-31	5.735
1993-09-30	5.845
1993-10-31	5.485
1993-11-30	5.28
1993-12-31	5.235
1994-01-31	5.28
1994-02-28	5.075
1994-03-31	5.22
1994-04-30	5.095
1994-05-31	5.075
1994-06-30	5.075
1994-07-31	5.28
1994-08-31	5.41
1994-09-30	5.69
1994-10-31	5.865
1994-11-30	6.03
1994-12-31	6.425
1995-01-31	6.645
1995-02-28	6.645
1995-03-31	6.545
1995-04-30	6.845
1995-05-31	6.53
1995-06-30	6.78
1995-07-31	6.735
1995-08-31	6.69
1995-09-30	6.72
1995-10-31	6.645
1995-11-30	6.47
1995-12-31	6.455
1996-01-31	6.175
1996-02-29	6.075
1996-03-31	6.01
1996-04-30	5.97
1996-05-31	5.985
1996-06-30	5.705
1996-07-31	5.705
1996-08-31	5.675
1996-09-30	5.845
1996-10-31	6.11
1996-11-30	6.28
1996-12-31	6.41
1997-01-31	6.16
1997-02-28	6.095
1997-03-31	6.265
1997-04-30	6.44
1997-05-31	6.485
1997-06-30	6.795
1997-07-31	7
1997-08-31	7.22
1997-09-30	7.2031
1997-10-31	7.22
1997-11-30	7.575
1997-12-31	7.515
1998-01-31	7.425
1998-02-28	7.44
1998-03-31	7.4844
1998-04-30	7.36
1998-05-31	7.3594
1998-06-30	7.75
1998-07-31	7.66
1998-08-31	7.545
1998-09-30	7.22
1998-10-31	7.03
1998-11-30	6.72
1998-12-31	6.125
1999-01-31	5.66
1999-02-28	5.325
1999-03-31	5.175
1999-04-30	5.19
1999-05-31	5.235
1999-06-30	5.045
1999-07-31	5.125
1999-08-31	5.095
1999-09-30	5.41
1999-10-31	5.845
1999-11-30	5.845
1999-12-31	5.9063
2000-01-31	6.0626
2000-02-29	6.1251
2000-03-31	6.1407
2000-04-30	6.2344
2000-05-31	6.1407
2000-06-30	6.0938
2000-07-31	6.1407
2000-08-31	6.1094
2000-09-30	6.0626
2000-10-31	6.0157
2000-11-30	5.9376
2000-12-31	5.7813
2001-01-31	5.6876
2001-02-28	5.5157
2001-03-31	5.415
2001-04-30	5.24
2001-05-31	5.165
2001-06-30	5.18
2001-07-31	5.165
2001-08-31	4.835
2001-09-30	4.46
2001-10-31	4.115
2001-11-30	3.94
2001-12-31	4
2002-01-31	3.98
2002-02-28	3.93
2002-03-31	4.1
2002-04-30	4.055
2002-05-31	4.1
2002-06-30	4.06
2002-07-31	3.93
2002-08-31	3.92
2002-09-30	3.855
2002-10-31	3.86
2002-11-30	3.945
2002-12-31	3.92
2003-01-31	3.885
2003-02-28	3.61
2003-03-31	3.58
2003-04-30	3.55
2003-05-31	3.55
2003-06-30	3.555
2003-07-31	3.37
2003-08-31	3.55
2003-09-30	3.64
2003-10-31	3.86
2003-11-30	3.91
2003-12-31	3.965
2004-01-31	4.07
2004-02-29	4.13
2004-03-31	4.31
2004-04-30	4.36
2004-05-31	4.57
2004-06-30	4.76
2004-07-31	4.875
2004-08-31	4.89
2004-09-30	4.84
2004-10-31	4.83
2004-11-30	4.78
2004-12-31	4.8
2005-01-31	4.79
2005-02-28	4.88
2005-03-31	4.9
2005-04-30	4.87
2005-05-31	4.8
2005-06-30	4.71
2005-07-31	4.55
2005-08-31	4.53
2005-09-30	4.54
2005-10-31	4.55
2005-11-30	4.56
2005-12-31	4.59
2006-01-31	4.53
2006-02-28	4.51
2006-03-31	4.55
2006-04-30	4.61
2006-05-31	4.665
2006-06-30	4.72
2006-07-31	4.725
2006-08-31	4.935
2006-09-30	5.035
2006-10-31	5.145
2006-11-30	5.205
2006-12-31	5.275
2007-01-31	5.5
2007-02-28	5.485
2007-03-31	5.675
2007-04-30	5.785
2007-05-31	5.905
2007-06-30	6.075
2007-07-31	6.105
2007-08-31	6.54
2007-09-30	6.23
2007-10-31	6.2
2007-11-30	6.55
2007-12-31	5.95
2008-01-31	5.54
2008-02-29	5.68
2008-03-31	5.98
2008-04-30	5.8
2008-05-31	5.83
2008-06-30	5.91
2008-07-31	5.76
2008-08-31	5.73
2008-09-30	6.225
2008-10-31	5.95
2008-11-30	3.975
2008-12-31	2.775
2009-01-31	2.125
2009-02-28	2.025
2009-03-31	1.575
2009-04-30	1.325
2009-05-31	1.225
2009-06-30	1.075
2009-07-31	0.775
2009-08-31	0.575
2009-09-30	0.475
2009-10-31	0.575
2009-11-30	0.575
2009-12-31	0.575
2010-01-31	0.575
2010-02-28	0.575
2010-03-31	0.625
2010-04-30	0.625
2010-05-31	0.725
2010-06-30	0.775
2010-07-31	0.775
2010-08-31	0.725
2010-09-30	0.725
2010-10-31	0.725
2010-11-30	0.725
2010-12-31	0.825
2011-01-31	0.825
2011-02-28	0.825
2011-03-31	0.875
2011-04-30	0.875
2011-05-31	0.875
2011-06-30	0.875
2011-07-31	0.875
2011-08-31	0.975
2011-09-30	1.045
2011-10-31	1.075
2011-11-30	1.125
2011-12-31	1.175
2012-01-31	1.175
2012-02-29	1.145
2012-03-31	1.105
2012-04-30	1.095
2012-05-31	1.075
2012-06-30	0.965
2012-07-31	0.775
2012-08-31	0.725
2012-09-30	0.575
2012-10-31	0.575
2012-11-30	0.575
2012-12-31	0.575
2013-01-31	0.575
2013-02-28	0.575
2013-03-31	0.565
2013-04-30	0.575
2013-05-31	0.525
2013-06-30	0.525
2013-07-31	0.525
2013-08-31	0.525
2013-09-30	0.525
2013-10-31	0.525
2013-11-30	0.575
2013-12-31	0.575
2014-01-31	0.575
2014-02-28	0.575
2014-03-31	0.575
2014-04-30	0.575
2014-05-31	0.575
2014-06-30	0.575
2014-07-31	0.575
2014-08-31	0.575
2014-09-30	0.55
2014-10-31	0.55
2014-11-30	0.575
2014-12-31	0.55
2015-01-31	0.55
2015-02-28	0.55
2015-03-31	0.55
2015-04-30	0.55
2015-05-31	0.55
2015-06-30	0.55
2015-07-31	0.55
2015-08-31	0.55
2015-09-30	0.55
2015-10-31	0.55
2015-11-30	0.55
2015-12-31	0.65
2016-01-31	0.65
2016-02-29	0.65
2016-03-31	0.65
2016-04-30	0.65
2016-05-31	0.65
2016-06-30	0.55
2016-07-31	0.475
2016-08-31	0.35
2016-09-30	0.35
2016-10-31	0.35
2016-11-30	0.35
2016-12-31	0.35
2017-01-31	0.35
2017-02-28	0.35
2017-03-31	0.35
2017-04-30	0.35
2017-05-31	0.35
2017-06-30	0.35
2017-07-31	0.3
2017-08-31	0.3
2017-09-30	0.3
2017-10-31	0.3
2017-11-30	0.5
2017-12-31	0.5
2018-01-31	0.5
2018-02-28	0.5
2018-03-31	0.7
2018-04-30	0.7
2018-05-31	0.65
2018-06-30	0.65