Month	Percent
1978-01-01	10.10
1978-02-01	9.85
1978-03-01	9.69
1978-04-01	9.64
1978-05-01	9.59
1978-06-01	9.80
1978-07-01	10.15
1978-08-01	10.54
1978-09-01	10.84
1978-10-01	11.32
1978-11-01	12.42
1978-12-01	12.75
1979-01-01	13.44
1979-02-01	13.79
1979-03-01	13.97
1979-04-01	14.07
1979-05-01	14.34
1979-06-01	14.49
1979-07-01	14.93
1979-08-01	15.37
1979-09-01	15.61
1979-10-01	15.98
1979-11-01	16.84
1979-12-01	17.99
1980-01-01	18.78
1980-02-01	19.46
1980-03-01	21.52
1980-04-01	22.44
1980-05-01	22.43
1980-06-01	21.63
1980-07-01	20.97
1980-08-01	21.54
1980-09-01	23.47
1980-10-01	24.82
1980-11-01	25.94
1980-12-01	27.94
1981-01-01	28.94
1981-02-01	28.82
1981-03-01	28.63
1981-04-01	28.40
1981-05-01	28.12
1981-06-01	28.36
1981-07-01	30.78
1981-08-01	33.65
1981-09-01	33.93
1981-10-01	33.82
1981-11-01	33.40
1981-12-01	33.34
1982-01-01	34.20
1982-02-01	36.03
1982-03-01	35.28
1982-04-01	37.69
1982-05-01	42.83
1982-06-01	50.59
1982-07-01	53.07
1982-08-01	55.86
1982-09-01	50.67
1982-10-01	43.01
1982-11-01	51.68
1982-12-01	57.86
1983-01-01	59.86
1983-02-01	61.49
1983-03-01	64.81
1983-04-01	63.05
1983-05-01	63.40
1983-06-01	62.68
1983-07-01	61.16
1983-08-01	57.97
1983-09-01	56.30
1983-10-01	54.72
1983-11-01	54.06
1983-12-01	53.95
1984-01-01	53.21
1984-02-01	50.92
1984-03-01	46.20
1984-04-01	46.93
1984-05-01	50.40
1984-06-01	51.16
1984-07-01	51.15
1984-08-01	50.73
1984-09-01	49.92
1984-10-01	47.97
1984-11-01	47.94
1984-12-01	49.32
1985-01-01	48.33
1985-02-01	49.66
1985-03-01	57.58
1985-04-01	59.30
1985-05-01	59.95
1985-06-01	64.67
1985-07-01	70.91
1985-08-01	73.91
1985-09-01	69.48
1985-10-01	66.60
1985-11-01	69.10
1985-12-01	74.80
1986-01-01	75.30
1986-02-01	76.48
1986-03-01	79.38
1986-04-01	80.86
1986-05-01	81.01
1986-06-01	85.88
1986-07-01	90.50
1986-08-01	0.00
1986-09-01	0.00
1986-10-01	108.08
1986-11-01	104.15
1986-12-01	105.48
1987-01-01	104.96
1987-02-01	104.97
1987-03-01	101.81
1987-04-01	99.55
1987-05-01	98.44
1987-06-01	98.37
1987-07-01	96.14
1987-08-01	95.90
1987-09-01	95.43
1987-10-01	96.46
1987-11-01	110.82
1987-12-01	131.10
1988-01-01	157.63
1988-02-01	153.92
1988-03-01	77.77
1988-04-01	53.82
1988-05-01	46.24
1988-06-01	33.10
1988-07-01	32.45
1988-08-01	32.45
1988-09-01	32.45
1988-10-01	32.45
1988-11-01	0.00
1988-12-01	51.47
1989-01-01	50.66
1989-02-01	49.40
1989-03-01	48.81
1989-04-01	51.55
1989-05-01	53.83
1989-06-01	54.99
1989-07-01	36.42
1989-08-01	36.43
1989-09-01	35.73
1989-10-01	39.18
1989-11-01	40.07
1989-12-01	40.19
1990-01-01	40.25
1990-02-01	43.03
1990-03-01	45.16
1990-04-01	44.32
1990-05-01	38.00
1990-06-01	33.27
1990-07-01	31.76
1990-08-01	30.54
1990-09-01	31.54
1990-10-01	30.34
1990-11-01	26.29
1990-12-01	25.84
1991-01-01	23.93
1991-02-01	23.33
1991-03-01	22.51
1991-04-01	21.43
1991-05-01	20.15
1991-06-01	18.53
1991-07-01	18.64
1991-08-01	17.68
1991-09-01	18.72
1991-10-01	18.38
1991-11-01	17.24
1991-12-01	17.33
1992-01-01	15.84
1992-02-01	15.13
1992-03-01	11.73
1992-04-01	11.86
1992-05-01	13.10
1992-06-01	14.84
1992-07-01	16.99
1992-08-01	17.29
1992-09-01	18.63
1992-10-01	19.49
1992-11-01	18.23
1992-12-01	17.53
1993-01-01	18.30
1993-02-01	18.75
1993-03-01	17.98
1993-04-01	16.74
1993-05-01	16.34
1993-06-01	15.95
1993-07-01	14.73
1993-08-01	14.10
1993-09-01	14.12
1993-10-01	13.55
1993-11-01	13.72
1993-12-01	11.71
1994-01-01	10.75
1994-02-01	9.80
1994-03-01	10.31
1994-04-01	15.92
1994-05-01	17.44
1994-06-01	16.74
1994-07-01	17.38
1994-08-01	14.76
1994-09-01	14.15
1994-10-01	13.98
1994-11-01	14.54
1994-12-01	19.62
1995-01-01	39.23
1995-02-01	41.65
1995-03-01	71.20
1995-04-01	71.50
1995-05-01	54.71
1995-06-01	47.31
1995-07-01	39.72
1995-08-01	35.88
1995-09-01	34.33
1995-10-01	41.20
1995-11-01	54.19
1995-12-01	48.01
1996-01-01	41.57
1996-02-01	40.66
1996-03-01	43.05
1996-04-01	37.15
1996-05-01	31.07
1996-06-01	29.64
1996-07-01	31.66
1996-08-01	29.16
1996-09-01	27.79
1996-10-01	27.68
1996-11-01	28.94
1996-12-01	26.51
1997-01-01	24.60
1997-02-01	21.96
1997-03-01	22.32
1997-04-01	22.37
1997-05-01	20.59
1997-06-01	21.40
1997-07-01	19.40
1997-08-01	20.15
1997-09-01	20.51
1997-10-01	19.91
1997-11-01	22.01
1997-12-01	19.88
1998-01-01	19.37
1998-02-01	19.63
1998-03-01	20.76
1998-04-01	19.47
1998-05-01	18.85
1998-06-01	20.99
1998-07-01	21.82
1998-08-01	25.22
1998-09-01	41.90
1998-10-01	37.53
1998-11-01	34.30
1998-12-01	34.35
1999-01-01	32.27
1999-02-01	28.72
1999-03-01	23.86
1999-04-01	21.05
1999-05-01	21.02
1999-06-01	21.35
1999-07-01	20.78
1999-08-01	21.49
1999-09-01	21.34
1999-10-01	20.30
1999-11-01	18.68
1999-12-01	17.65
2000-01-01	17.43
2000-02-01	16.44
2000-03-01	14.46
2000-04-01	14.37
2000-05-01	15.58
2000-06-01	16.61
2000-07-01	14.62
2000-08-01	15.71
2000-09-01	16.15
2000-10-01	17.06
2000-11-01	18.01
2000-12-01	17.41
2001-01-01	18.50
2001-02-01	18.07
2001-03-01	16.47
2001-04-01	15.40
2001-05-01	12.61
2001-06-01	10.27
2001-07-01	10.25
2001-08-01	8.54
2001-09-01	10.88
2001-10-01	9.68
2001-11-01	8.69
2001-12-01	7.53
2002-01-01	7.35
2002-02-01	8.17
2002-03-01	7.31
2002-04-01	6.16
2002-05-01	6.69
2002-06-01	7.49
2002-07-01	7.88
2002-08-01	7.07
2002-09-01	7.82
2002-10-01	8.23
2002-11-01	7.83
2002-12-01	7.27
2003-01-01	8.69
2003-02-01	8.86
2003-03-01	9.12
2003-04-01	8.00
2003-05-01	5.75
2003-06-01	5.37
2003-07-01	5.27
2003-08-01	5.11
2003-09-01	5.20
2003-10-01	5.38
2003-11-01	5.23
2003-12-01	6.18
2004-01-01	5.11
2004-02-01	5.63
2004-03-01	6.21
2004-04-01	5.96
2004-05-01	7.08
2004-06-01	7.26
2004-07-01	7.30
2004-08-01	7.50
2004-09-01	7.75
2004-10-01	8.11
2004-11-01	8.58
2004-12-01	8.72
2005-01-01	8.74
2005-02-01	9.31
2005-03-01	9.74
2005-04-01	10.00
2005-05-01	9.92
2005-06-01	9.76
2005-07-01	9.74
2005-08-01	9.69
2005-09-01	9.14
2005-10-01	8.95
2005-11-01	8.76
2005-12-01	8.20
2006-01-01	7.80
2006-02-01	7.57
2006-03-01	7.38
2006-04-01	7.28
2006-05-01	7.12
2006-06-01	7.33
2006-07-01	7.18
2006-08-01	7.17
2006-09-01	7.18
2006-10-01	7.21
2006-11-01	7.16
2006-12-01	7.16
2007-01-01	7.19
2007-02-01	7.19
2007-03-01	7.21
2007-04-01	7.15
2007-05-01	7.41
2007-06-01	7.38
2007-07-01	7.34
2007-08-01	7.38
2007-09-01	7.36
2007-10-01	7.43
2007-11-01	7.60
2007-12-01	7.60
2008-01-01	7.58
2008-02-01	7.51
2008-03-01	7.47
2008-04-01	7.54
2008-05-01	7.59
2008-06-01	7.79
2008-07-01	8.21
2008-08-01	8.35
2008-09-01	8.32
2008-10-01	8.13
2008-11-01	7.96
2008-12-01	8.20
2009-01-01	7.66
2009-02-01	7.32
2009-03-01	7.22
2009-04-01	5.99
2009-05-01	5.24
2009-06-01	5.03
2009-07-01	4.69
2009-08-01	4.59
2009-09-01	4.60
2009-10-01	4.64
2009-11-01	4.61
2009-12-01	4.60
2010-01-01	4.62
2010-02-01	4.64
2010-03-01	4.64
2010-04-01	4.63
2010-05-01	4.64
2010-06-01	4.66
2010-07-01	4.64
2010-08-01	4.64
2010-09-01	4.61
2010-10-01	4.39
2010-11-01	4.25
2010-12-01	4.53
2011-01-01	4.44
2011-02-01	4.29
2011-03-01	4.32
2011-04-01	4.39
2011-05-01	4.45
2011-06-01	4.39
2011-07-01	4.27
2011-08-01	4.22
2011-09-01	4.28
2011-10-01	4.37
2011-11-01	4.37
2011-12-01	4.44
2012-01-01	4.46
2012-02-01	4.39
2012-03-01	4.43
2012-04-01	4.35
2012-05-01	4.39
2012-06-01	4.46
2012-07-01	4.41
2012-08-01	4.32
2012-09-01	4.27
2012-10-01	4.35
2012-11-01	4.46
2012-12-01	4.21
2013-01-01	4.30
2013-02-01	4.19
2013-03-01	4.00
2013-04-01	3.89
2013-05-01	3.73
2013-06-01	3.83
2013-07-01	3.89
2013-08-01	3.89
2013-09-01	3.68
2013-10-01	3.47
2013-11-01	3.48
2013-12-01	3.41
2014-01-01	3.41
2014-02-01	3.39
2014-03-01	3.29
2014-04-01	3.37
2014-05-01	3.42
2014-06-01	3.08
2014-07-01	2.90
2014-08-01	2.89
2014-09-01	2.86
2014-10-01	2.95
2014-11-01	2.92
2014-12-01	2.92
2015-01-01	2.91
2015-02-01	2.94
2015-03-01	3.12
2015-04-01	3.09
2015-05-01	3.09
2015-06-01	3.12
2015-07-01	3.13
2015-08-01	3.35
2015-09-01	3.33
2015-10-01	3.13
2015-11-01	3.22
2015-12-01	3.29
2016-01-01	3.30
2016-02-01	3.53
2016-03-01	3.91
2016-04-01	3.83
2016-05-01	3.94
2016-06-01	4.14
2016-07-01	4.39
2016-08-01	4.36
2016-09-01	4.48
2016-10-01	4.85
2016-11-01	5.47
2016-12-01	5.87
2017-01-01	6.25
2017-02-01	6.37
2017-03-01	6.56
2017-04-01	6.66
2017-05-01	6.82
2017-06-01	7.05
2017-07-01	7.08
2017-08-01	7.11
2017-09-01	7.09
2017-10-01	7.09
2017-11-01	7.13
2017-12-01	7.31
2018-01-01	7.36
2018-02-01	7.56
2018-03-01	7.65
2018-04-01	7.64
2018-05-01	7.74
2018-06-01	7.88
2018-07-01	7.90
2018-08-01	7.89
2018-09-01	7.92
2018-10-01	7.89