Month	Percent
1985-01-01	12.50
1985-02-01	12.74
1985-03-01	12.81
1985-04-01	12.87
1985-05-01	12.87
1985-06-01	12.92
1985-07-01	13.01
1985-08-01	13.00
1985-09-01	12.99
1985-10-01	12.97
1985-11-01	13.00
1985-12-01	13.26
1986-01-01	13.49
1986-02-01	13.48
1986-03-01	13.37
1986-04-01	13.05
1986-05-01	13.02
1986-06-01	13.27
1986-07-01	13.35
1986-08-01	13.35
1986-09-01	13.21
1986-10-01	13.12
1986-11-01	13.25
1986-12-01	13.63
1987-01-01	13.55
1987-02-01	13.41
1987-03-01	13.40
1987-04-01	13.38
1987-05-01	13.43
1987-06-01	13.46
1987-07-01	13.43
1987-08-01	13.27
1987-09-01	12.77
1987-10-01	12.95
1987-11-01	13.27
1987-12-01	13.34
1988-01-01	13.38
1988-02-01	13.33
1988-03-01	13.25
1988-04-01	13.18
1988-05-01	13.06
1988-06-01	12.81
1988-07-01	12.75
1988-08-01	12.85
1988-09-01	12.90
1988-10-01	12.78
1988-11-01	12.49
1988-12-01	11.97
1989-01-01	11.33
1989-02-01	10.77
1989-03-01	10.79
1989-04-01	10.78
1989-05-01	10.59
1989-06-01	10.77
1989-07-01	10.83
1989-08-01	10.83
1989-09-01	10.62
1989-10-01	10.66
1989-11-01	10.95
1989-12-01	10.99
1990-01-01	10.72
1990-02-01	10.57
1990-03-01	10.70
1990-04-01	10.94
1990-05-01	10.80
1990-06-01	10.76
1990-07-01	10.66
1990-08-01	10.58
1990-09-01	10.57
1990-10-01	10.61
1990-11-01	10.64
1990-12-01	10.61
1991-01-01	10.57
1991-02-01	10.45
1991-03-01	10.40
1991-04-01	10.17
1991-05-01	9.89
1991-06-01	9.77
1991-07-01	9.75
1991-08-01	9.71
1991-09-01	9.75
1991-10-01	9.88
1991-11-01	9.83
1991-12-01	9.79
1992-01-01	9.52
1992-02-01	9.32
1992-03-01	9.34
1992-04-01	9.38
1992-05-01	9.37
1992-06-01	9.46
1992-07-01	9.55
1992-08-01	9.87
1992-09-01	10.24
1992-10-01	10.20
1992-11-01	9.61
1992-12-01	9.42
1993-01-01	8.93
1993-02-01	8.39
1993-03-01	7.67
1993-04-01	7.40
1993-05-01	7.12
1993-06-01	6.81
1993-07-01	6.65
1993-08-01	6.16
1993-09-01	6.10
1993-10-01	5.90
1993-11-01	5.75
1993-12-01	5.69
1994-01-01	5.56
1994-02-01	5.55
1994-03-01	6.11
1994-04-01	6.59
1994-05-01	7.23
1994-06-01	8.08
1994-07-01	7.70
1994-08-01	8.15
1994-09-01	8.90
1994-10-01	8.71
1994-11-01	8.63
1994-12-01	8.02
1995-01-01	8.16
1995-02-01	8.00
1995-03-01	7.98
1995-04-01	7.75
1995-05-01	7.47
1995-06-01	7.55
1995-07-01	7.57
1995-08-01	7.41
1995-09-01	7.08
1995-10-01	6.96
1995-11-01	6.70
1995-12-01	6.46
1996-01-01	6.39
1996-02-01	6.79
1996-03-01	6.85
1996-04-01	6.71
1996-05-01	6.90
1996-06-01	7.05
1996-07-01	7.02
1996-08-01	6.97
1996-09-01	7.02
1996-10-01	6.75
1996-11-01	6.50
1996-12-01	6.33
1997-01-01	6.03
1997-02-01	5.65
1997-03-01	5.94
1997-04-01	6.19
1997-05-01	6.03
1997-06-01	5.95
1997-07-01	5.95
1997-08-01	6.06
1997-09-01	5.89
1997-10-01	5.75
1997-11-01	5.72
1997-12-01	5.50
1998-01-01	5.33
1998-02-01	5.29
1998-03-01	5.28
1998-04-01	5.33
1998-05-01	5.50
1998-06-01	5.47
1998-07-01	5.40
1998-08-01	5.47
1998-09-01	5.44
1998-10-01	5.48
1998-11-01	5.48
1998-12-01	5.33
1999-01-01	5.01
1999-02-01	4.75
1999-03-01	4.92
1999-04-01	4.69
1999-05-01	4.98
1999-06-01	5.45
1999-07-01	5.81
1999-08-01	5.97
1999-09-01	6.03
1999-10-01	6.27
1999-11-01	6.02
1999-12-01	6.07
2000-01-01	6.36
2000-02-01	6.33
2000-03-01	6.14
2000-04-01	6.09
2000-05-01	6.25
2000-06-01	6.09
2000-07-01	6.22
2000-08-01	6.18
2000-09-01	6.34
2000-10-01	6.37
2000-11-01	6.24
2000-12-01	6.01
2001-01-01	5.95
2001-02-01	5.96
2001-03-01	6.01
2001-04-01	6.22
2001-05-01	6.48
2001-06-01	6.59
2001-07-01	6.65
2001-08-01	6.45
2001-09-01	6.40
2001-10-01	6.10
2001-11-01	5.86
2001-12-01	6.17
2002-01-01	6.23
2002-02-01	6.35
2002-03-01	6.63
2002-04-01	6.71
2002-05-01	6.77
2002-06-01	6.78
2002-07-01	6.56
2002-08-01	6.31
2002-09-01	6.06
2002-10-01	6.16
2002-11-01	6.12
2002-12-01	5.93
2003-01-01	5.68
2003-02-01	5.32
2003-03-01	5.25
2003-04-01	5.31
2003-05-01	4.97
2003-06-01	4.50
2003-07-01	4.90
2003-08-01	5.01
2003-09-01	4.91
2003-10-01	4.94
2003-11-01	4.97
2003-12-01	4.78
2004-01-01	4.54
2004-02-01	4.29
2004-03-01	4.12
2004-04-01	4.67
2004-05-01	4.91
2004-06-01	4.72
2004-07-01	4.47
2004-08-01	4.29
2004-09-01	4.23
2004-10-01	4.19
2004-11-01	4.05
2004-12-01	3.94
2005-01-01	3.90
2005-02-01	3.77
2005-03-01	4.02
2005-04-01	3.87
2005-05-01	3.70
2005-06-01	3.55
2005-07-01	3.56
2005-08-01	3.62
2005-09-01	3.49
2005-10-01	3.68
2005-11-01	3.96
2005-12-01	3.83
2006-01-01	3.65
2006-02-01	3.72
2006-03-01	3.84
2006-04-01	4.07
2006-05-01	4.17
2006-06-01	4.26
2006-07-01	4.31
2006-08-01	4.20
2006-09-01	4.12
2006-10-01	4.18
2006-11-01	4.16
2006-12-01	4.24
2007-01-01	4.39
2007-02-01	4.52
2007-03-01	4.45
2007-04-01	4.71
2007-05-01	4.88
2007-06-01	5.19
2007-07-01	5.10
2007-08-01	4.91
2007-09-01	4.81
2007-10-01	4.91
2007-11-01	4.76
2007-12-01	4.66
2008-01-01	4.52
2008-02-01	4.39
2008-03-01	4.28
2008-04-01	4.50
2008-05-01	4.63
2008-06-01	4.94
2008-07-01	4.94
2008-08-01	4.69
2008-09-01	4.49
2008-10-01	4.17
2008-11-01	4.18
2008-12-01	3.77
2009-01-01	3.69
2009-02-01	3.75
2009-03-01	3.81
2009-04-01	3.90
2009-05-01	4.12
2009-06-01	4.23
2009-07-01	4.05
2009-08-01	4.17
2009-09-01	4.17
2009-10-01	4.07
2009-11-01	4.04
2009-12-01	3.98
2010-01-01	4.08
2010-02-01	3.87
2010-03-01	3.85
2010-04-01	3.84
2010-05-01	3.46
2010-06-01	3.36
2010-07-01	3.33
2010-08-01	3.12
2010-09-01	3.30
2010-10-01	3.24
2010-11-01	3.28
2010-12-01	3.61
2011-01-01	3.75
2011-02-01	3.81
2011-03-01	3.77
2011-04-01	3.79
2011-05-01	3.48
2011-06-01	3.36
2011-07-01	3.24
2011-08-01	2.60
2011-09-01	2.36
2011-10-01	2.59
2011-11-01	2.49
2011-12-01	2.38
2012-01-01	2.22
2012-02-01	2.40
2012-03-01	2.48
2012-04-01	2.34
2012-05-01	2.05
2012-06-01	1.94
2012-07-01	1.73
2012-08-01	1.92
2012-09-01	2.07
2012-10-01	1.98
2012-11-01	2.01
2012-12-01	2.08
2013-01-01	2.31
2013-02-01	2.49
2013-03-01	2.24
2013-04-01	2.07
2013-05-01	2.10
2013-06-01	2.40
2013-07-01	2.61
2013-08-01	2.84
2013-09-01	3.12
2013-10-01	2.95
2013-11-01	2.86
2013-12-01	2.94
2014-01-01	2.95
2014-02-01	2.85
2014-03-01	2.94
2014-04-01	2.88
2014-05-01	2.73
2014-06-01	2.61
2014-07-01	2.43
2014-08-01	2.36
2014-09-01	2.40
2014-10-01	2.21
2014-11-01	2.05
2014-12-01	1.77
2015-01-01	1.45
2015-02-01	1.39
2015-03-01	1.54
2015-04-01	1.44
2015-05-01	1.65
2015-06-01	1.77
2015-07-01	1.70
2015-08-01	1.49
2015-09-01	1.60
2015-10-01	1.57
2015-11-01	1.63
2015-12-01	1.55
2016-01-01	1.45
2016-02-01	1.39
2016-03-01	1.33
2016-04-01	1.30
2016-05-01	1.40
2016-06-01	1.17
2016-07-01	0.96
2016-08-01	1.07
2016-09-01	1.23
2016-10-01	1.34
2016-11-01	1.58
2016-12-01	1.76
2017-01-01	1.69
2017-02-01	1.74
2017-03-01	1.77
2017-04-01	1.61
2017-05-01	1.59
2017-06-01	1.53
2017-07-01	1.69
2017-08-01	1.62
2017-09-01	1.59
2017-10-01	1.66
2017-11-01	1.59
2017-12-01	1.57
2018-01-01	1.74
2018-02-01	1.98
2018-03-01	1.99
2018-04-01	1.93
2018-05-01	1.89
2018-06-01	1.82
2018-07-01	1.76
2018-08-01	1.77
2018-09-01	1.90
2018-10-01	2.00