Month	Percent
1991-06-01	68.5000
1991-07-01	62.0000
1991-08-01	49.1000
1991-09-01	48.7000
1991-10-01	47.0000
1991-11-01	46.9000
1991-12-01	47.2000
1992-01-01	46.4000
1992-02-01	46.9000
1992-03-01	46.4000
1992-04-01	47.2000
1992-05-01	46.3000
1992-06-01	47.6000
1992-07-01	44.5000
1992-08-01	44.5000
1992-09-01	44.7000
1992-10-01	43.0000
1992-11-01	43.9000
1992-12-01	44.3000
1993-01-01	41.0000
1993-02-01	38.0000
1993-03-01	35.1000
1993-04-01	33.5000
1993-05-01	33.4000
1993-06-01	33.4000
1993-07-01	33.9000
1993-08-01	33.9000
1993-09-01	34.0000
1993-10-01	33.9000
1993-11-01	34.3000
1993-12-01	34.1000
1994-01-01	34.3000
1994-02-01	34.1000
1994-03-01	33.2000
1994-04-01	33.2000
1994-05-01	32.4100
1994-06-01	31.8000
1994-07-01	31.6900
1994-08-01	31.0300
1994-09-01	30.5000
1994-10-01	30.3200
1994-11-01	29.6400
1994-12-01	28.8900
1995-01-01	28.6100
1995-02-01	30.0800
1995-03-01	30.4400
1995-04-01	29.9300
1995-05-01	28.9600
1995-06-01	27.6800
1995-07-01	27.1800
1995-08-01	26.5800
1995-09-01	25.8200
1995-10-01	25.6600
1995-11-01	25.8000
1995-12-01	25.5400
1996-01-01	22.9500
1996-02-01	22.6700
1996-03-01	22.6500
1996-04-01	22.8700
1996-05-01	21.5900
1996-06-01	21.6300
1996-07-01	20.1800
1996-08-01	19.4600
1996-09-01	20.0100
1996-10-01	19.7600
1996-11-01	19.8000
1996-12-01	22.4300
1997-01-01	21.4700
1997-02-01	21.7700
1997-03-01	22.0800
1997-04-01	22.1100
1997-05-01	22.1400
1997-06-01	22.1400
1997-07-01	24.3600
1997-08-01	24.0900
1997-09-01	24.2300
1997-10-01	24.1500
1997-11-01	24.3500
1997-12-01	24.4300
1998-01-01	24.9800
1998-02-01	23.5900
1998-03-01	24.1900
1998-04-01	22.7400
1998-05-01	21.6000
1998-06-01	21.0800
1998-07-01	18.8700
1998-08-01	18.6900
1998-09-01	17.6400
1998-10-01	15.7800
1998-11-01	15.0500
1998-12-01	14.6500
1999-01-01	12.6000
1999-02-01	12.6800
1999-03-01	12.8400
1999-04-01	12.9500
1999-05-01	13.0400
1999-06-01	13.1100
1999-07-01	13.4600
1999-08-01	13.6300
1999-09-01	16.3200
1999-10-01	17.4200
1999-11-01	18.5900
1999-12-01	19.5000
2000-01-01	17.3400
2000-02-01	18.5900
2000-03-01	18.3000
2000-04-01	18.5200
2000-05-01	18.4200
2000-06-01	18.6000
2000-07-01	18.5400
2000-08-01	19.6300
2000-09-01	19.5100
2000-10-01	19.8200
2000-11-01	19.7800
2000-12-01	19.4500
2001-01-01	18.8600
2001-02-01	18.2900
2001-03-01	17.3700
2001-04-01	17.1500
2001-05-01	17.1600
2001-06-01	16.0900
2001-07-01	15.4900
2001-08-01	15.4200
2001-09-01	14.5600
2001-10-01	13.8400
2001-11-01	12.4500
2001-12-01	11.9100
2002-01-01	10.6400
2002-02-01	10.2200
2002-03-01	10.3400
2002-04-01	10.1000
2002-05-01	9.6000
2002-06-01	8.9700
2002-07-01	8.6900
2002-08-01	8.3300
2002-09-01	7.7300
2002-10-01	7.0200
2002-11-01	6.7600
2002-12-01	6.8700
2003-01-01	6.4700
2003-02-01	6.2700
2003-03-01	5.9800
2003-04-01	5.9100
2003-05-01	5.4000
2003-06-01	5.3200
2003-07-01	5.2400
2003-08-01	5.1400
2003-09-01	5.2400
2003-10-01	5.8600
2003-11-01	5.8300
2003-12-01	5.6000
2004-01-01	5.4600
2004-02-01	5.5000
2004-03-01	5.4900
2004-04-01	5.8500
2004-05-01	6.0000
2004-06-01	6.0500
2004-07-01	6.4100
2004-08-01	7.0000
2004-09-01	6.9100
2004-10-01	6.8400
2004-11-01	6.7700
2004-12-01	6.6400
2005-01-01	6.6100
2005-02-01	6.3100
2005-03-01	5.9100
2005-04-01	5.5900
2005-05-01	5.4400
2005-06-01	4.9000
2005-07-01	4.6700
2005-08-01	4.6000
2005-09-01	4.5000
2005-10-01	4.6200
2005-11-01	4.6300
2005-12-01	4.6000
2006-01-01	4.4000
2006-02-01	4.1600
2006-03-01	4.1700
2006-04-01	4.1300
2006-05-01	4.1500
2006-06-01	4.2100
2006-07-01	4.1800
2006-08-01	4.1900
2006-09-01	4.2200
2006-10-01	4.2000
2006-11-01	4.2000
2006-12-01	4.2000
2007-01-01	4.1900
2007-02-01	4.2200
2007-03-01	4.2400
2007-04-01	4.4000
2007-05-01	4.4400
2007-06-01	4.4450
2007-07-01	4.8100
2007-08-01	5.0300
2007-09-01	5.0100
2007-10-01	5.2100
2007-11-01	5.5600
2007-12-01	5.6800
2008-01-01	5.6500
2008-02-01	5.9400
2008-03-01	6.1500
2008-04-01	6.3400
2008-05-01	6.4800
2008-06-01	6.6500
2008-07-01	6.5600
2008-08-01	6.5000
2008-09-01	6.6300
2008-10-01	6.8500
2008-11-01	6.5600
2008-12-01	5.8800
2009-01-01	4.8600
2009-02-01	4.5100
2009-03-01	4.1700
2009-04-01	4.3000
2009-05-01	4.6200
2009-06-01	4.4400
2009-07-01	4.1700
2009-08-01	4.1800
2009-09-01	4.1800
2009-10-01	4.1800
2009-11-01	4.1900
2009-12-01	4.2700
2010-01-01	4.1900
2010-02-01	4.1500
2010-03-01	4.1000
2010-04-01	3.8600
2010-05-01	3.8600
2010-06-01	3.8700
2010-07-01	3.8200
2010-08-01	3.8100
2010-09-01	3.8400
2010-10-01	3.8500
2010-11-01	3.8800
2010-12-01	3.9500
2011-01-01	4.0900
2011-02-01	4.1500
2011-03-01	4.2000
2011-04-01	4.3000
2011-05-01	4.4500
2011-06-01	4.6900
2011-07-01	4.7100
2011-08-01	4.7200
2011-09-01	4.7600
2011-10-01	4.9100
2011-11-01	4.9700
2011-12-01	4.9900
2012-01-01	4.9900
2012-02-01	4.9747
2012-03-01	4.9400
2012-04-01	4.9500
2012-05-01	5.1100
2012-06-01	5.1300
2012-07-01	5.1100
2012-08-01	5.0400
2012-09-01	4.9200
2012-10-01	4.7300
2012-11-01	4.4900
2012-12-01	4.1100
2013-01-01	3.9500
2013-02-01	3.7300
2013-03-01	3.3900
2013-04-01	3.0800
2013-05-01	2.7400
2013-06-01	2.7300
2013-07-01	2.7000
2013-08-01	2.7000
2013-09-01	2.6700
2013-10-01	2.6600
2013-11-01	2.6500
2013-12-01	2.7100
2014-01-01	2.7100
2014-02-01	2.7100
2014-03-01	2.7100
2014-04-01	2.7200
2014-05-01	2.7200
2014-06-01	2.6800
2014-07-01	2.6700
2014-08-01	2.5900
2014-09-01	2.2800
2014-10-01	1.9600
2014-11-01	2.0600
2014-12-01	2.0600
2015-01-01	2.0000
2015-02-01	1.8100
2015-03-01	1.6500
2015-04-01	1.6500
2015-05-01	1.6800
2015-06-01	1.7200
2015-07-01	1.7200
2015-08-01	1.7200
2015-09-01	1.7300
2015-10-01	1.7300
2015-11-01	1.7300
2015-12-01	1.7200
2016-01-01	1.7000
2016-02-01	1.6800
2016-03-01	1.6700
2016-04-01	1.6700
2016-05-01	1.6800
2016-06-01	1.7100
2016-07-01	1.7100
2016-08-01	1.7100
2016-09-01	1.7100
2016-10-01	1.7200
2016-11-01	1.7300
2016-12-01	1.7300
2017-01-01	1.7300
2017-02-01	1.7300
2017-03-01	1.7300
2017-04-01	1.7300
2017-05-01	1.7300
2017-06-01	1.7300
2017-07-01	1.7300
2017-08-01	1.7300
2017-09-01	1.7300
2017-10-01	1.7300
2017-11-01	1.7300
2017-12-01	1.7200
2018-01-01	1.7200
2018-02-01	1.7200
2018-03-01	1.7000
2018-04-01	1.7000
2018-05-01	1.7000
2018-06-01	1.7000
2018-07-01	1.7000
2018-08-01	1.7100
2018-09-01	1.7200
2018-10-01	1.7200