Month	Percent
1970-01-01	5.54
1970-02-01	5.53
1970-03-01	5.54
1970-04-01	5.55
1970-05-01	5.53
1970-06-01	5.50
1970-07-01	5.47
1970-08-01	5.47
1970-09-01	5.49
1970-10-01	5.49
1970-11-01	5.49
1970-12-01	5.49
1971-01-01	5.51
1971-02-01	5.51
1971-03-01	5.51
1971-04-01	5.51
1971-05-01	5.51
1971-06-01	5.51
1971-07-01	5.52
1971-08-01	5.53
1971-09-01	5.52
1971-10-01	5.52
1971-11-01	5.52
1971-12-01	5.53
1972-01-01	5.53
1972-02-01	5.53
1972-03-01	5.53
1972-04-01	5.53
1972-05-01	5.52
1972-06-01	5.52
1972-07-01	5.45
1972-08-01	5.54
1972-09-01	5.54
1972-10-01	5.52
1972-11-01	5.53
1972-12-01	5.54
1973-01-01	5.54
1973-02-01	5.53
1973-03-01	5.55
1973-04-01	5.55
1973-05-01	5.55
1973-06-01	5.66
1973-07-01	5.99
1973-08-01	6.01
1973-09-01	6.03
1973-10-01	6.02
1973-11-01	6.05
1973-12-01	6.08
1974-01-01	6.06
1974-02-01	6.04
1974-03-01	6.04
1974-04-01	6.05
1974-05-01	6.05
1974-06-01	6.14
1974-07-01	6.12
1974-08-01	6.09
1974-09-01	6.08
1974-10-01	6.10
1974-11-01	6.11
1974-12-01	6.11
1975-01-01	6.11
1975-02-01	6.11
1975-03-01	6.10
1975-04-01	6.10
1975-05-01	6.10
1975-06-01	6.11
1975-07-01	6.10
1975-08-01	6.63
1975-09-01	6.63
1975-10-01	6.63
1975-11-01	6.64
1975-12-01	6.66
1976-01-01	6.92
1976-02-01	6.92
1976-03-01	8.60
1976-04-01	8.60
1976-05-01	8.60
1976-06-01	8.60
1976-07-01	8.58
1976-08-01	8.58
1976-09-01	8.58
1976-10-01	8.72
1976-11-01	8.70
1976-12-01	8.70
1977-01-01	8.70
1977-02-01	8.70
1977-03-01	8.71
1977-04-01	8.71
1977-05-01	8.71
1977-06-01	8.53
1977-07-01	8.53
1977-08-01	9.98
1977-09-01	10.05
1977-10-01	10.33
1977-11-01	9.92
1977-12-01	10.00
1978-01-01	10.00
1978-02-01	9.98
1978-03-01	10.00
1978-04-01	9.99
1978-05-01	9.99
1978-06-01	9.99
1978-07-01	9.79
1978-08-01	9.99
1978-09-01	9.97
1978-10-01	10.01
1978-11-01	10.02
1978-12-01	10.02
1979-01-01	10.10
1979-02-01	10.05
1979-03-01	10.02
1979-04-01	12.64
1979-05-01	12.95
1979-06-01	12.64
1979-07-01	12.08
1979-08-01	12.35
1979-10-01	13.00
1979-11-01	12.96
1979-12-01	12.98
1980-01-01	13.44
1980-02-01	13.45
1980-03-01	13.57
1980-04-01	13.47
1980-05-01	13.44
1980-06-01	13.49
1980-07-01	13.40
1980-08-01	13.25
1980-09-01	12.98
1980-10-01	12.96
1980-11-01	12.96
1980-12-01	12.99
1981-01-01	12.81
1981-02-01	12.97
1981-03-01	12.88
1981-04-01	12.85
1981-05-01	12.85
1981-06-01	12.90
1981-07-01	12.90
1981-08-01	13.02
1981-09-01	12.77
1981-10-01	12.57
1981-11-01	12.92
1981-12-01	12.55
1982-01-01	12.78
1982-02-01	12.78
1982-03-01	12.98
1982-04-01	12.92
1982-05-01	12.97
1982-06-01	12.99
1982-07-01	12.97
1982-08-01	12.73
1982-09-01	12.94
1982-10-01	12.82
1982-11-01	13.00
1982-12-01	12.84
1983-01-01	12.77
1983-02-01	12.95
1983-03-01	12.69
1983-04-01	13.95
1983-05-01	14.00
1983-06-01	13.59
1983-07-01	14.02
1983-08-01	10.41
1983-09-01	10.13
1983-10-01	10.57
1983-11-01	10.61
1983-12-01	10.50
1984-01-01	10.84
1984-02-01	11.53
1984-03-01	10.44
1984-04-01	8.91
1984-05-01	8.55
1984-06-01	10.06
1984-07-01	10.25
1984-08-01	15.03
1984-09-01	15.31
1984-10-01	16.65
1984-11-01	16.90
1984-12-01	16.85
1985-01-01	17.10
1985-02-01	17.35
1985-03-01	17.43
1985-04-01	17.73
1985-05-01	18.71
1985-06-01	17.24
1985-07-01	17.30
1985-08-01	17.83
1985-09-01	18.27
1985-10-01	18.62
1985-11-01	17.38
1985-12-01	16.93
1986-01-01	17.98
1986-02-01	18.48
1986-03-01	17.87
1986-04-01	17.64
1986-05-01	15.65
1986-06-01	15.07
1986-07-01	15.94
1986-08-01	16.07
1986-09-01	15.64
1986-10-01	15.25
1986-11-01	15.58
1986-12-01	16.20
1987-01-01	16.00
1987-02-01	16.44
1987-03-01	16.76
1987-04-01	16.00
1987-05-01	15.70
1987-06-01	15.49
1987-07-01	15.58
1987-08-01	15.65
1987-09-01	15.67
1987-10-01	15.65
1987-11-01	15.17
1987-12-01	14.41
1988-01-01	14.13
1988-02-01	13.66
1988-03-01	13.05
1988-04-01	12.95
1988-05-01	12.78
1988-06-01	12.81
1988-07-01	12.69
1988-08-01	12.74
1988-09-01	12.76
1988-10-01	12.82
1988-11-01	13.20
1988-12-01	13.80
1989-01-01	13.38
1989-02-01	13.10
1989-03-01	13.23
1989-04-01	13.30
1989-05-01	13.22
1989-06-01	13.10
1989-07-01	12.95
1989-08-01	12.23
1989-09-01	12.23
1989-10-01	12.46
1989-11-01	12.31
1989-12-01	12.44
1990-01-01	12.26
1990-02-01	12.10
1990-03-01	12.21
1990-04-01	12.38
1990-05-01	12.34
1990-06-01	12.16
1990-07-01	12.08
1990-08-01	12.71
1990-09-01	12.87
1990-10-01	12.92
1990-11-01	12.96
1990-12-01	12.35
1991-01-01	12.14
1991-02-01	11.46
1991-03-01	11.29
1991-04-01	10.79
1991-05-01	9.99
1991-06-01	9.80
1991-07-01	9.76
1991-08-01	9.93
1991-09-01	9.44
1991-10-01	8.89
1991-11-01	8.86
1991-12-01	8.97
1992-01-01	8.98
1992-02-01	9.32
1992-03-01	9.06
1992-04-01	8.96
1992-05-01	8.78
1992-06-01	8.61
1992-07-01	7.97
1992-08-01	7.87
1992-09-01	7.93
1992-10-01	7.83
1992-11-01	7.69
1992-12-01	7.82
1993-01-01	7.86
1993-02-01	7.79
1993-03-01	7.45
1993-04-01	7.32
1993-05-01	7.27
1993-06-01	7.33
1993-07-01	6.94
1993-08-01	6.55
1993-09-01	6.27
1993-10-01	6.12
1993-11-01	6.23
1993-12-01	6.08
1994-01-01	5.69
1994-02-01	5.81
1994-03-01	6.29
1994-04-01	7.01
1994-05-01	7.19
1994-06-01	7.48
1994-07-01	8.09
1994-08-01	8.20
1994-09-01	9.05
1994-10-01	8.99
1994-11-01	9.09
1994-12-01	8.68
1995-01-01	8.59
1995-02-01	8.58
1995-03-01	8.38
1995-04-01	7.87
1995-05-01	7.44
1995-06-01	7.48
1995-07-01	7.61
1995-08-01	7.94
1995-09-01	7.78
1995-10-01	7.32
1995-11-01	7.17
1995-12-01	7.19
1996-01-01	7.06
1996-02-01	7.22
1996-03-01	7.82
1996-04-01	8.25
1996-05-01	8.52
1996-06-01	8.83
1996-07-01	8.55
1996-08-01	8.17
1996-09-01	8.29
1996-10-01	7.64
1996-11-01	7.16
1996-12-01	7.22
1997-01-01	7.34
1997-02-01	7.34
1997-03-01	7.78
1997-04-01	8.10
1997-05-01	7.62
1997-06-01	7.13
1997-07-01	6.81
1997-08-01	7.05
1997-09-01	6.88
1997-10-01	6.64
1997-11-01	6.65
1997-12-01	6.96
1998-01-01	6.74
1998-02-01	6.83
1998-03-01	6.93
1998-04-01	6.82
1998-05-01	6.66
1998-06-01	6.60
1998-07-01	6.25
1998-08-01	6.17
1998-09-01	6.02
1998-10-01	5.46
1998-11-01	5.59
1998-12-01	5.38
1999-01-01	5.53
1999-02-01	5.62
1999-03-01	5.84
1999-04-01	5.70
1999-05-01	6.12
1999-06-01	6.51
1999-07-01	6.54
1999-08-01	6.88
1999-09-01	6.91
1999-10-01	7.11
1999-11-01	7.02
1999-12-01	7.17
2000-01-01	7.48
2000-02-01	7.31
2000-03-01	7.06
2000-04-01	6.84
2000-05-01	7.10
2000-06-01	6.85
2000-07-01	6.73
2000-08-01	6.68
2000-09-01	6.74
2000-10-01	6.70
2000-11-01	6.59
2000-12-01	6.15
2001-01-01	6.06
2001-02-01	6.04
2001-03-01	5.95
2001-04-01	6.26
2001-05-01	6.62
2001-06-01	6.63
2001-07-01	6.74
2001-08-01	6.58
2001-09-01	6.52
2001-10-01	6.40
2001-11-01	6.30
2001-12-01	6.62
2002-01-01	6.58
2002-02-01	6.61
2002-03-01	6.88
2002-04-01	6.87
2002-05-01	6.81
2002-06-01	6.64
2002-07-01	6.54
2002-08-01	6.33
2002-09-01	6.17
2002-10-01	6.33
2002-11-01	6.29
2002-12-01	6.28
2003-01-01	6.12
2003-02-01	5.88
2003-03-01	5.91
2003-04-01	5.98
2003-05-01	5.60
2003-06-01	5.23
2003-07-01	5.54
2003-08-01	5.91
2003-09-01	5.95
2003-10-01	6.02
2003-11-01	6.21
2003-12-01	6.05
2004-01-01	5.93
2004-02-01	5.91
2004-03-01	5.74
2004-04-01	6.04
2004-05-01	6.26
2004-06-01	6.29
2004-07-01	6.18
2004-08-01	6.20
2004-09-01	6.16
2004-10-01	6.08
2004-11-01	6.05
2004-12-01	5.95
2005-01-01	5.99
2005-02-01	5.95
2005-03-01	6.16
2005-04-01	5.99
2005-05-01	5.81
2005-06-01	5.71
2005-07-01	5.75
2005-08-01	5.77
2005-09-01	5.71
2005-10-01	5.88
2005-11-01	5.95
2005-12-01	5.83
2006-01-01	5.72
2006-02-01	5.70
2006-03-01	5.72
2006-04-01	5.74
2006-05-01	5.81
2006-06-01	5.84
2006-07-01	5.88
2006-08-01	5.84
2006-09-01	5.80
2006-10-01	5.84
2006-11-01	5.71
2006-12-01	5.77
2007-01-01	5.93
2007-02-01	5.94
2007-03-01	5.87
2007-04-01	6.06
2007-05-01	6.17
2007-06-01	6.72
2007-07-01	6.77
2007-08-01	6.40
2007-09-01	6.16
2007-10-01	6.37
2007-11-01	6.39
2007-12-01	6.40
2008-01-01	6.28
2008-02-01	6.40
2008-03-01	6.36
2008-04-01	6.48
2008-05-01	6.43
2008-06-01	6.42
2008-07-01	6.18
2008-08-01	6.13
2008-09-01	5.82
2008-10-01	5.86
2008-11-01	5.73
2008-12-01	4.88
2009-01-01	4.49
2009-02-01	4.53
2009-03-01	4.77
2009-04-01	5.24
2009-05-01	5.59
2009-06-01	5.97
2009-07-01	5.75
2009-08-01	5.82
2009-09-01	5.63
2009-10-01	5.66
2009-11-01	6.01
2009-12-01	6.02
2010-01-01	6.00
2010-02-01	5.86
2010-03-01	5.86
2010-04-01	5.96
2010-05-01	5.73
2010-06-01	5.51
2010-07-01	5.40
2010-08-01	5.24
2010-09-01	5.28
2010-10-01	5.09
2010-11-01	5.49
2010-12-01	5.82
2011-01-01	5.61
2011-02-01	5.56
2011-03-01	5.58
2011-04-01	5.70
2011-05-01	5.23
2011-06-01	5.04
2011-07-01	5.07
2011-08-01	4.55
2011-09-01	4.41
2011-10-01	4.54
2011-11-01	4.14
2011-12-01	3.91
2012-01-01	3.86
2012-02-01	3.98
2012-03-01	4.17
2012-04-01	3.98
2012-05-01	3.66
2012-06-01	3.40
2012-07-01	3.40
2012-08-01	3.66
2012-09-01	3.57
2012-10-01	3.51
2012-11-01	3.47
2012-12-01	3.56
2013-01-01	3.55
2013-02-01	3.81
2013-03-01	3.72
2013-04-01	3.33
2013-05-01	3.37
2013-06-01	3.83
2013-07-01	4.23
2013-08-01	4.47
2013-09-01	4.70
2013-10-01	4.65
2013-11-01	4.70
2013-12-01	4.76
2014-01-01	4.64
2014-02-01	4.57
2014-03-01	4.58
2014-04-01	4.55
2014-05-01	4.29
2014-06-01	4.42
2014-07-01	4.37
2014-08-01	4.20
2014-09-01	4.19
2014-10-01	4.04
2014-11-01	4.03
2014-12-01	3.77
2015-01-01	3.42
2015-02-01	3.26
2015-03-01	3.30
2015-04-01	3.25
2015-05-01	3.65
2015-06-01	3.77
2015-07-01	3.47
2015-08-01	3.29
2015-09-01	3.29
2015-10-01	3.34
2015-11-01	3.49
2015-12-01	3.55
2016-01-01	3.31
2016-02-01	3.06
2016-03-01	3.02
2016-04-01	2.86
2016-05-01	2.67
2016-06-01	2.51
2016-07-01	2.27
2016-08-01	2.19
2016-09-01	2.40
2016-10-01	2.53
2016-11-01	2.99
2016-12-01	3.33
2017-01-01	3.23
2017-02-01	3.29
2017-03-01	3.28
2017-04-01	3.05
2017-05-01	2.93
2017-06-01	2.77
2017-07-01	2.97
2017-08-01	2.88
2017-09-01	2.91
2017-10-01	2.97
2017-11-01	2.85
2017-12-01	2.76
2018-01-01	2.88
2018-02-01	2.97
2018-03-01	2.89
2018-04-01	2.82
2018-05-01	2.78
2018-06-01	2.90
2018-07-01	2.81
2018-08-01	2.64
2018-09-01	2.60
2018-10-01	2.62