Month	Percent
1991-03-01	13.76700
1991-04-01	13.43300
1991-05-01	13.05900
1991-06-01	13.09300
1991-07-01	13.33700
1991-08-01	13.44800
1991-09-01	13.01700
1991-10-01	12.79000
1991-11-01	12.90700
1991-12-01	12.95200
1992-01-01	12.67700
1992-02-01	12.60700
1992-03-01	12.57400
1992-04-01	12.68900
1992-05-01	12.57800
1992-06-01	13.10100
1992-07-01	13.62900
1992-08-01	13.67900
1992-09-01	14.11200
1992-10-01	14.41900
1992-11-01	13.46500
1992-12-01	13.65900
1993-01-01	13.43000
1993-02-01	13.06200
1993-03-01	12.90100
1993-04-01	13.10700
1993-05-01	12.46300
1993-06-01	11.67300
1993-07-01	11.09600
1993-08-01	9.76300
1993-09-01	9.46900
1993-10-01	9.01500
1993-11-01	9.33200
1993-12-01	8.93200
1994-01-01	8.67100
1994-02-01	8.76600
1994-03-01	9.44500
1994-04-01	9.04600
1994-05-01	9.37100
1994-06-01	10.47600
1994-07-01	10.76700
1994-08-01	11.45800
1994-09-01	11.93700
1994-10-01	12.07000
1994-11-01	12.02300
1994-12-01	12.19600
1995-01-01	12.37000
1995-02-01	12.39100
1995-03-01	13.45200
1995-04-01	13.40400
1995-05-01	12.29900
1995-06-01	12.38300
1995-07-01	12.21200
1995-08-01	11.65500
1995-09-01	11.54400
1995-10-01	11.96200
1995-11-01	11.62700
1995-12-01	11.17100
1996-01-01	10.43100
1996-02-01	10.51800
1996-03-01	10.68700
1996-04-01	10.33900
1996-05-01	9.69500
1996-06-01	9.57000
1996-07-01	9.42800
1996-08-01	9.48300
1996-09-01	9.16800
1996-10-01	8.23200
1996-11-01	7.69200
1996-12-01	7.56500
1997-01-01	7.37500
1997-02-01	7.36300
1997-03-01	7.86900
1997-04-01	7.73600
1997-05-01	7.31900
1997-06-01	7.06600
1997-07-01	6.51800
1997-08-01	6.65700
1997-09-01	6.35500
1997-10-01	6.19600
1997-11-01	6.13200
1997-12-01	5.73700
1998-01-01	5.43400
1998-02-01	5.37500
1998-03-01	5.19800
1998-04-01	5.14600
1998-05-01	5.20800
1998-06-01	5.07800
1998-07-01	4.97000
1998-08-01	4.78600
1998-09-01	4.53000
1998-10-01	4.49000
1998-11-01	4.38000
1998-12-01	3.99500
1999-01-01	3.92200
1999-02-01	4.05400
1999-03-01	4.27000
1999-04-01	4.11000
1999-05-01	4.27900
1999-06-01	4.61500
1999-07-01	4.93800
1999-08-01	5.13000
1999-09-01	5.28200
1999-10-01	5.52000
1999-11-01	5.25000
1999-12-01	5.36000
2000-01-01	5.75000
2000-02-01	5.73000
2000-03-01	5.58000
2000-04-01	5.46600
2000-05-01	5.67000
2000-06-01	5.51000
2000-07-01	5.59100
2000-08-01	5.56000
2000-09-01	5.63000
2000-10-01	5.57800
2000-11-01	5.55000
2000-12-01	5.29800
2001-01-01	5.18300
2001-02-01	5.18000
2001-03-01	5.13100
2001-04-01	5.28200
2001-05-01	5.44900
2001-06-01	5.39000
2001-07-01	5.40000
2001-08-01	5.22000
2001-09-01	5.20000
2001-10-01	4.96000
2001-11-01	4.80000
2001-12-01	5.05000
2002-01-01	5.14200
2002-02-01	5.19900
2002-03-01	5.41100
2002-04-01	5.40000
2002-05-01	5.40600
2002-06-01	5.25500
2002-07-01	5.10900
2002-08-01	4.82800
2002-09-01	4.61800
2002-10-01	4.75700
2002-11-01	4.73500
2002-12-01	4.55000
2003-01-01	4.38000
2003-02-01	4.16000
2003-03-01	4.18000
2003-04-01	4.31000
2003-05-01	4.04000
2003-06-01	4.13000
2003-07-01	4.29000
2003-08-01	4.31000
2003-09-01	4.40000
2003-10-01	4.38000
2003-11-01	4.51000
2003-12-01	4.46000
2004-01-01	4.31660
2004-02-01	4.34280
2004-03-01	4.16870
2004-04-01	4.35090
2004-05-01	4.49300
2004-06-01	4.54390
2004-07-01	4.43990
2004-08-01	4.27710
2004-09-01	4.25080
2004-10-01	4.12890
2004-11-01	3.99980
2004-12-01	3.79170
2005-01-01	3.71140
2005-02-01	3.67840
2005-03-01	3.83730
2005-04-01	3.65320
2005-05-01	3.55260
2005-06-01	3.40500
2005-07-01	3.43840
2005-08-01	3.44900
2005-09-01	3.28700
2005-10-01	3.44440
2005-11-01	3.65516
2005-12-01	3.55320
2006-01-01	3.54350
2006-02-01	3.69730
2006-03-01	3.92280
2006-04-01	4.22000
2006-05-01	4.28470
2006-06-01	4.29470
2006-07-01	4.30650
2006-08-01	4.17070
2006-09-01	4.03580
2006-10-01	4.07000
2006-11-01	3.97010
2006-12-01	4.03760
2007-01-01	4.26280
2007-02-01	4.28010
2007-03-01	4.17620
2007-04-01	4.37020
2007-05-01	4.48970
2007-06-01	4.77200
2007-07-01	4.76030
2007-08-01	4.58350
2007-09-01	4.57360
2007-10-01	4.59090
2007-11-01	4.44930
2007-12-01	4.53850
2008-01-01	4.39890
2008-02-01	4.35440
2008-03-01	4.38000
2008-04-01	4.53000
2008-05-01	4.70000
2008-06-01	5.10560
2008-07-01	5.09460
2008-08-01	4.81390
2008-09-01	4.80410
2008-10-01	4.78000
2008-11-01	4.74250
2008-12-01	4.46880
2009-01-01	4.62130
2009-02-01	4.53580
2009-03-01	4.45840
2009-04-01	4.35600
2009-05-01	4.41510
2009-06-01	4.60620
2009-07-01	4.37290
2009-08-01	4.11600
2009-09-01	4.08800
2009-10-01	4.10100
2009-11-01	4.05650
2009-12-01	4.00700
2010-01-01	4.07790
2010-02-01	4.04700
2010-03-01	3.94500
2010-04-01	3.99560
2010-05-01	3.99000
2010-06-01	4.10000
2010-07-01	4.03000
2010-08-01	3.80000
2010-09-01	3.86000
2010-10-01	3.80000
2010-11-01	4.18000
2010-12-01	4.60300
2011-01-01	4.72900
2011-02-01	4.73560
2011-03-01	4.87540
2011-04-01	4.84100
2011-05-01	4.75600
2011-06-01	4.81560
2011-07-01	5.46300
2011-08-01	5.27050
2011-09-01	5.74600
2011-10-01	5.97190
2011-11-01	7.05710
2011-12-01	6.81200
2012-01-01	6.53660
2012-02-01	5.54600
2012-03-01	5.04880
2012-04-01	5.67580
2012-05-01	5.78330
2012-06-01	5.90370
2012-07-01	5.99600
2012-08-01	5.82200
2012-09-01	5.25400
2012-10-01	4.95290
2012-11-01	4.85140
2012-12-01	4.54160
2013-01-01	4.20770
2013-02-01	4.49290
2013-03-01	4.64040
2013-04-01	4.27800
2013-05-01	3.96400
2013-06-01	4.37890
2013-07-01	4.41830
2013-08-01	4.41910
2013-09-01	4.54110
2013-10-01	4.24760
2013-11-01	4.09510
2013-12-01	4.11400
2014-01-01	3.86600
2014-02-01	3.65120
2014-03-01	3.39940
2014-04-01	3.22800
2014-05-01	3.12330
2014-06-01	2.92000
2014-07-01	2.79360
2014-08-01	2.63270
2014-09-01	2.40000
2014-10-01	2.42400
2014-11-01	2.29040
2014-12-01	1.98980
2015-01-01	1.70210
2015-02-01	1.55680
2015-03-01	1.29420
2015-04-01	1.35740
2015-05-01	1.81200
2015-06-01	2.19900
2015-07-01	2.04210
2015-08-01	1.83900
2015-09-01	1.92000
2015-10-01	1.69600
2015-11-01	1.57020
2015-12-01	1.57860
2016-01-01	1.53400
2016-02-01	1.55800
2016-03-01	1.37500
2016-04-01	1.44180
2016-05-01	1.52630
2016-06-01	1.45350
2016-07-01	1.22720
2016-08-01	1.17630
2016-09-01	1.26610
2016-10-01	1.45000
2016-11-01	1.94300
2016-12-01	1.88600
2017-01-01	1.99110
2017-02-01	2.35200
2017-03-01	2.40100
2017-04-01	2.25700
2017-05-01	2.19400
2017-06-01	2.05300
2017-07-01	2.23100
2017-08-01	2.10990
2017-09-01	2.10950
2017-10-01	2.07380
2017-11-01	1.78880
2017-12-01	1.79400
2018-01-01	1.98400
2018-02-01	2.08100
2018-03-01	1.96550
2018-04-01	1.77340
2018-05-01	2.17970
2018-06-01	2.74420
2018-07-01	2.64300
2018-08-01	3.16100
2018-09-01	2.95900
2018-10-01	3.47000