Month	Percent
1982-01-01	11.71
1982-02-01	12.55
1982-03-01	12.77
1982-04-01	12.64
1982-05-01	12.82
1982-06-01	13.62
1982-07-01	14.38
1982-08-01	14.19
1982-09-01	14.50
1982-10-01	14.48
1982-11-01	13.02
1982-12-01	12.32
1983-01-01	11.38
1983-02-01	11.08
1983-03-01	10.92
1983-04-01	10.81
1983-05-01	10.92
1983-06-01	11.21
1983-07-01	11.39
1983-08-01	11.31
1983-09-01	11.65
1983-10-01	12.25
1983-11-01	12.22
1983-12-01	11.79
1984-01-01	11.25
1984-02-01	11.00
1984-03-01	10.75
1984-04-01	10.63
1984-05-01	11.00
1984-06-01	11.80
1984-07-01	13.51
1984-08-01	13.57
1984-09-01	13.43
1984-10-01	12.96
1984-11-01	11.60
1984-12-01	11.67
1985-01-01	11.92
1985-02-01	13.52
1985-03-01	13.75
1985-04-01	13.69
1985-05-01	15.46
1985-06-01	16.25
1985-07-01	15.66
1985-08-01	14.90
1985-09-01	14.83
1985-10-01	14.50
1985-11-01	13.24
1985-12-01	12.37
1986-01-01	12.09
1986-02-01	11.09
1986-03-01	10.75
1986-04-01	10.25
1986-05-01	10.15
1986-06-01	9.83
1986-07-01	9.50
1986-08-01	9.29
1986-09-01	8.74
1986-10-01	8.51
1986-11-01	8.64
1986-12-01	9.13
1987-01-01	9.77
1987-02-01	10.34
1987-03-01	10.77
1987-04-01	9.48
1987-05-01	9.23
1987-06-01	8.80
1987-07-01	8.73
1987-08-01	9.08
1987-09-01	8.98
1987-10-01	9.17
1987-11-01	9.27
1987-12-01	9.07
1988-01-01	9.10
1988-02-01	9.23
1988-03-01	9.43
1988-04-01	9.69
1988-05-01	10.41
1988-06-01	10.24
1988-07-01	10.34
1988-08-01	10.58
1988-09-01	10.40
1988-10-01	10.50
1988-11-01	10.65
1988-12-01	10.43
1989-01-01	10.38
1989-02-01	10.55
1989-03-01	11.44
1989-04-01	11.52
1989-05-01	11.56
1989-06-01	11.56
1989-07-01	11.70
1989-08-01	11.76
1989-09-01	11.61
1989-10-01	11.78
1989-11-01	11.84
1989-12-01	12.29
1990-01-01	12.62
1990-02-01	14.88
1990-03-01	14.68
1990-04-01	13.74
1990-05-01	12.97
1990-06-01	12.56
1990-07-01	12.58
1990-08-01	12.99
1990-09-01	13.07
1990-10-01	14.67
1990-11-01	14.89
1990-12-01	14.36
1991-01-01	13.37
1991-02-01	12.05
1991-03-01	12.10
1991-04-01	12.27
1991-05-01	11.74
1991-06-01	10.61
1991-07-01	10.57
1991-08-01	10.70
1991-09-01	10.27
1991-10-01	10.75
1991-11-01	11.06
1991-12-01	13.63
1992-01-01	12.49
1992-02-01	12.23
1992-03-01	11.70
1992-04-01	11.85
1992-05-01	11.66
1992-06-01	11.59
1992-07-01	11.92
1992-08-01	13.26
1992-09-01	20.18
1992-10-01	14.39
1992-11-01	12.45
1992-12-01	10.58
1993-01-01	9.76
1993-02-01	9.32
1993-03-01	9.71
1993-04-01	9.48
1993-05-01	8.74
1993-06-01	8.32
1993-07-01	8.21
1993-08-01	7.59
1993-09-01	7.53
1993-10-01	7.45
1993-11-01	7.22
1993-12-01	6.89
1994-01-01	6.97
1994-02-01	6.98
1994-03-01	7.04
1994-04-01	7.09
1994-05-01	7.00
1994-06-01	6.99
1994-07-01	7.32
1994-08-01	7.68
1994-09-01	7.71
1994-10-01	7.95
1994-11-01	8.11
1994-12-01	7.97
1995-01-01	8.02
1995-02-01	7.90
1995-03-01	8.67
1995-04-01	8.78
1995-05-01	8.77
1995-06-01	9.16
1995-07-01	9.26
1995-08-01	9.15
1995-09-01	8.92
1995-10-01	8.86
1995-11-01	8.84
1995-12-01	8.62
1996-01-01	8.19
1996-02-01	7.66
1996-03-01	7.08
1996-04-01	6.25
1996-05-01	6.19
1996-06-01	5.79
1996-07-01	5.43
1996-08-01	5.17
1996-09-01	4.80
1996-10-01	4.61
1996-11-01	4.43
1996-12-01	3.88
1997-01-01	3.76
1997-02-01	3.93
1997-03-01	4.13
1997-04-01	4.03
1997-05-01	4.09
1997-06-01	4.05
1997-07-01	4.06
1997-08-01	4.17
1997-09-01	4.11
1997-10-01	4.23
1997-11-01	4.31
1997-12-01	4.42
1998-01-01	4.41
1998-02-01	4.33
1998-03-01	4.48
1998-04-01	4.47
1998-05-01	4.49
1998-06-01	4.20
1998-07-01	4.11
1998-08-01	4.19
1998-09-01	4.19
1998-10-01	4.17
1998-11-01	3.79
1998-12-01	3.42
1999-01-01	3.27
1999-02-01	3.14
1999-03-01	3.13
1999-04-01	2.87
1999-05-01	2.92
1999-06-01	2.97
1999-07-01	3.01
1999-08-01	3.00
1999-09-01	3.05
1999-10-01	3.23
1999-11-01	3.38
1999-12-01	3.41
2000-01-01	3.57
2000-02-01	3.90
2000-03-01	4.06
2000-04-01	3.99
2000-05-01	3.96
2000-06-01	3.94
2000-07-01	4.03
2000-08-01	4.00
2000-09-01	3.94
2000-10-01	3.99
2000-11-01	4.00
2000-12-01	4.07
2001-01-01	4.07
2001-02-01	4.10
2001-03-01	4.06
2001-04-01	3.94
2001-05-01	4.01
2001-06-01	4.17
2001-07-01	4.31
2001-08-01	4.28
2001-09-01	4.01
2001-10-01	3.70
2001-12-01	3.71
2002-01-01	3.74
2002-02-01	3.87
2002-03-01	4.09
2002-04-01	4.25
2002-05-01	4.29
2002-06-01	4.28
2002-07-01	4.26
2002-08-01	4.19
2002-09-01	4.17
2002-10-01	4.07
2002-11-01	3.91
2002-12-01	3.67
2003-01-01	3.65
2003-02-01	3.61
2003-03-01	3.40
2003-04-01	3.42
2003-05-01	3.18
2003-06-01	2.81
2003-07-01	2.68
2003-08-01	2.71
2003-09-01	2.71
2003-10-01	2.73
2003-11-01	2.72
2003-12-01	2.70
2004-01-01	2.60
2004-02-01	2.46
2004-03-01	2.36
2004-04-01	2.02
2004-05-01	1.99
2004-06-01	1.98
2004-07-01	1.99
2004-08-01	1.99
2004-09-01	2.00
2004-10-01	1.99
2004-11-01	1.99
2004-12-01	2.00
2005-01-01	2.00
2005-02-01	1.97
2005-03-01	1.97
2005-04-01	1.99
2005-05-01	1.90
2005-06-01	1.65
2005-07-01	1.48
2005-08-01	1.48
2005-09-01	1.47
2005-10-01	1.49
2005-11-01	1.51
2005-12-01	1.69
2006-01-01	1.83
2006-02-01	1.93
2006-03-01	1.96
2006-04-01	2.05
2006-05-01	2.11
2006-06-01	2.21
2006-07-01	2.28
2006-08-01	2.43
2006-09-01	2.54
2006-10-01	2.74
2006-11-01	2.90
2006-12-01	3.00
2007-01-01	3.21
2007-02-01	3.29
2007-03-01	3.26
2007-04-01	3.34
2007-05-01	3.40
2007-06-01	3.45
2007-07-01	3.53
2007-08-01	3.58
2007-09-01	3.62
2007-10-01	3.81
2007-11-01	4.02
2007-12-01	4.12
2008-01-01	4.11
2008-02-01	4.21
2008-03-01	4.24
2008-04-01	4.14
2008-05-01	4.11
2008-06-01	4.17
2008-07-01	4.34
2008-08-01	4.40
2008-09-01	4.49
2008-10-01	3.63
2008-11-01	3.20
2008-12-01	1.82
2009-01-01	1.35
2009-02-01	0.85
2009-03-01	0.40
2009-04-01	0.30
2009-05-01	0.47
2009-06-01	0.39
2009-07-01	0.18
2009-08-01	0.16
2009-09-01	0.15
2009-10-01	0.18
2009-11-01	0.18
2009-12-01	0.17
2010-01-01	0.20
2010-02-01	0.22
2010-03-01	0.23
2010-04-01	0.29
2010-05-01	0.28
2010-06-01	0.27
2010-07-01	0.39
2010-08-01	0.45
2010-09-01	0.52
2010-10-01	0.81
2010-11-01	1.11
2010-12-01	1.28
2011-01-01	1.49
2011-02-01	1.74
2011-03-01	1.74
2011-04-01	1.80
2011-05-01	1.91
2011-06-01	1.85
2011-07-01	1.80
2011-08-01	1.71
2011-09-01	1.58
2011-10-01	1.45
2011-11-01	1.45
2011-12-01	1.37
2012-01-01	1.56
2012-02-01	1.59
2012-03-01	1.49
2012-04-01	1.44
2012-05-01	1.38
2012-06-01	1.24
2012-07-01	1.10
2012-08-01	1.15
2012-09-01	1.04
2012-10-01	0.98
2012-11-01	1.06
2012-12-01	1.01
2013-01-01	0.96
2013-02-01	0.98
2013-03-01	0.97
2013-04-01	0.95
2013-05-01	0.92
2013-06-01	0.92
2013-07-01	0.93
2013-08-01	0.93
2013-09-01	0.89
2013-10-01	0.92
2013-11-01	0.92
2013-12-01	0.82
2014-01-01	0.73
2014-02-01	0.73
2014-03-01	0.73
2014-04-01	0.70
2014-05-01	0.66
2014-06-01	0.58
2014-07-01	0.26
2014-08-01	0.22
2014-09-01	0.19
2014-10-01	0.14
2014-11-01	0.05
2014-12-01	0.06
2015-01-01	0.11
2015-02-01	-0.02
2015-03-01	-0.11
2015-04-01	-0.26
2015-05-01	-0.27
2015-06-01	-0.32
2015-07-01	-0.48
2015-08-01	-0.46
2015-09-01	-0.48
2015-10-01	-0.44
2015-11-01	-0.36
2015-12-01	-0.38
2016-01-01	-0.46
2016-02-01	-0.50
2016-03-01	-0.59
2016-04-01	-0.59
2016-05-01	-0.60
2016-06-01	-0.63
2016-07-01	-0.67
2016-08-01	-0.74
2016-09-01	-0.75
2016-10-01	-0.75
2016-11-01	-0.79
2016-12-01	-0.79
2017-01-01	-0.77
2017-02-01	-0.69
2017-03-01	-0.63
2017-04-01	-0.63
2017-05-01	-0.62
2017-06-01	-0.67
2017-07-01	-0.75
2017-08-01	-0.73
2017-09-01	-0.71
2017-10-01	-0.68
2017-11-01	-0.71
2017-12-01	-0.75
2018-01-01	-0.69
2018-02-01	-0.66
2018-03-01	-0.66
2018-04-01	-0.66
2018-05-01	-0.70
2018-06-01	-0.69
2018-07-01	-0.67
2018-08-01	-0.68
2018-09-01	-0.73
2018-10-01	-0.70