Month	Percent
1996-01-01	8.4200
1996-02-01	8.1800
1996-03-01	8.0800
1996-04-01	8.0900
1996-05-01	8.0600
1996-06-01	7.9800
1996-07-01	8.0200
1996-08-01	8.0200
1996-09-01	7.9900
1996-10-01	7.9600
1996-11-01	7.8900
1996-12-01	7.8700
1997-01-01	7.9200
1997-02-01	7.9900
1997-03-01	8.0300
1997-04-01	7.5800
1997-05-01	7.3800
1997-06-01	7.1100
1997-07-01	7.0000
1997-08-01	7.0000
1997-09-01	6.9300
1997-10-01	8.0400
1997-11-01	12.5000
1997-12-01	15.7700
1998-01-01	15.6300
1998-02-01	15.4200
1998-03-01	12.3300
1998-04-01	10.0500
1998-05-01	9.5700
1998-06-01	9.5000
1998-07-01	10.5200
1998-08-01	12.2900
1998-09-01	16.8800
1998-10-01	17.0600
1998-11-01	18.7100
1998-12-01	18.5000
1999-01-01	17.1300
1999-02-01	12.1600
1999-03-01	8.8300
1999-04-01	7.1500
1999-05-01	6.8100
1999-06-01	6.6400
1999-07-01	6.6000
1999-08-01	6.4200
1999-09-01	5.9700
1999-10-01	5.9100
1999-11-01	5.2400
1999-12-01	5.0900
2000-01-01	5.1300
2000-02-01	5.2000
2000-03-01	5.2700
2000-04-01	5.3300
2000-05-01	5.4800
2000-06-01	5.6800
2000-07-01	5.7700
2000-08-01	5.8200
2000-09-01	6.0500
2000-10-01	6.0900
2000-11-01	6.1800
2000-12-01	6.1400
2001-01-01	6.0800
2001-02-01	5.9500
2001-03-01	5.9200
2001-04-01	5.7700
2001-05-01	5.5900
2001-06-01	5.5000
2001-07-01	5.5000
2001-08-01	5.4300
2001-09-01	4.9700
2001-10-01	4.6800
2001-11-01	4.3500
2001-12-01	4.0200
2002-01-01	3.9700
2002-02-01	3.9700
2002-03-01	3.9700
2002-04-01	3.9700
2002-05-01	3.9400
2002-06-01	3.9200
2002-07-01	3.8900
2002-08-01	3.8800
2002-09-01	3.8800
2002-10-01	3.8400
2002-11-01	3.8000
2002-12-01	3.5300
2003-01-01	3.4700
2003-02-01	3.4600
2003-03-01	3.2800
2003-04-01	3.1900
2003-05-01	3.1200
2003-06-01	2.7700
2003-07-01	2.5500
2003-08-01	2.6700
2003-09-01	2.6100
2003-10-01	2.6100
2003-11-01	2.6100
2003-12-01	2.6100
2004-01-01	2.6100
2004-02-01	2.6100
2004-03-01	2.6200
2004-04-01	2.6200
2004-05-01	2.6100
2004-06-01	2.4200
2004-07-01	2.4100
2004-08-01	2.4100
2004-09-01	2.4100
2004-10-01	2.4100
2004-11-01	2.4100
2004-12-01	2.4100
2005-01-01	2.4000
2005-02-01	2.4000
2005-03-01	2.4000
2005-04-01	2.4000
2005-05-01	2.3900
2005-06-01	2.3400
2005-07-01	2.3300
2005-08-01	2.3300
2005-09-01	2.3200
2005-10-01	2.3200
2005-11-01	2.3200
2005-12-01	2.5900
2006-01-01	2.6100
2006-02-01	2.6200
2006-03-01	2.8700
2006-04-01	2.9100
2006-05-01	2.9200
2006-06-01	3.0600
2006-07-01	3.1800
2006-08-01	3.3200
2006-09-01	3.4000
2006-10-01	3.5700
2006-11-01	3.6600
2006-12-01	3.8100
2007-01-01	3.9000
2007-02-01	3.9400
2007-03-01	4.0600
2007-04-01	4.4200
2007-05-01	4.6900
2007-06-01	4.7400
2007-07-01	4.7300
2007-08-01	4.9400
2007-09-01	5.2100
2007-10-01	5.2200
2007-11-01	5.3600
2007-12-01	7.2300
2008-01-01	7.0300
2008-02-01	6.6200
2008-03-01	6.3500
2008-04-01	6.3300
2008-05-01	6.3900
2008-06-01	6.4100
2008-07-01	6.3700
2008-08-01	6.3500
2008-09-01	6.3400
2008-10-01	6.6900
2008-11-01	7.2500
2008-12-01	7.8400
2009-01-01	7.2800
2009-02-01	6.9000
2009-03-01	7.1100
2009-04-01	6.5100
2009-05-01	6.2700
2009-06-01	6.2000
2009-07-01	6.1600
2009-08-01	5.8500
2009-09-01	5.5800
2009-10-01	5.4400
2009-11-01	4.5400
2009-12-01	3.2800
2010-01-01	2.7400
2010-02-01	2.1200
2010-03-01	1.8600
2010-04-01	1.7900
2010-05-01	1.6700
2010-06-01	1.4700
2010-07-01	1.4000
2010-08-01	1.2900
2010-09-01	1.1600
2010-10-01	1.0800
2010-11-01	1.1300
2010-12-01	1.1300
2011-01-01	1.0172
2011-02-01	1.0867
2011-03-01	1.1755
2011-04-01	1.3212
2011-05-01	1.4251
2011-06-01	1.4886
2011-07-01	1.5976
2011-08-01	1.5521
2011-09-01	1.5365
2011-10-01	1.5759
2011-11-01	1.4847
2011-12-01	1.4261
2012-01-01	1.2222
2012-02-01	1.0483
2012-03-01	0.8585
2012-04-01	0.7443
2012-05-01	0.6849
2012-06-01	0.6589
2012-07-01	0.4970
2012-08-01	0.3324
2012-09-01	0.2463
2012-10-01	0.2079
2012-11-01	0.1920
2012-12-01	0.1855
2013-01-01	0.2049
2013-02-01	0.2234
2013-03-01	0.2061
2013-04-01	0.2089
2013-05-01	0.2012
2013-06-01	0.2103
2013-07-01	0.2214
2013-08-01	0.2259
2013-09-01	0.2232
2013-10-01	0.2258
2013-11-01	0.2234
2013-12-01	0.2735
2014-01-01	0.2920
2014-02-01	0.2881
2014-03-01	0.3053
2014-04-01	0.3297
2014-05-01	0.3246
2014-06-01	0.2414
2014-07-01	0.2050
2014-08-01	0.1916
2014-09-01	0.0971
2014-10-01	0.0826
2014-11-01	0.0809
2014-12-01	0.0809
2015-01-01	0.0627
2015-02-01	0.0482
2015-03-01	0.0272
2015-04-01	0.0047
2015-05-01	-0.0104
2015-06-01	-0.0139
2015-07-01	-0.0187
2015-08-01	-0.0277
2015-09-01	-0.0370
2015-10-01	-0.0536
2015-11-01	-0.0876
2015-12-01	-0.1263
2016-01-01	-0.1461
2016-02-01	-0.1836
2016-03-01	-0.2285
2016-04-01	-0.2492
2016-05-01	-0.2572
2016-06-01	-0.2679
2016-07-01	-0.2945
2016-08-01	-0.2982
2016-09-01	-0.3016
2016-10-01	-0.3090
2016-11-01	-0.3127
2016-12-01	-0.3158
2017-01-01	-0.3255
2017-02-01	-0.3286
2017-03-01	-0.3293
2017-04-01	-0.3304
2017-05-01	-0.3295
2017-06-01	-0.3300
2017-07-01	-0.3304
2017-08-01	-0.3291
2017-09-01	-0.3294
2017-10-01	-0.3295
2017-11-01	-0.3290
2017-12-01	-0.3279
2018-01-01	-0.3285
2018-02-01	-0.3285
2018-03-01	-0.3279
2018-04-01	-0.3285
2018-05-01	-0.3252
2018-06-01	-0.3220
2018-07-01	-0.3207
2018-08-01	-0.3190
2018-09-01	-0.3188
2018-10-01	-0.3177