Month	Percent
1985-07-01	6.41670
1985-08-01	6.24760
1985-09-01	6.49720
1985-10-01	6.66000
1985-11-01	7.41850
1985-12-01	8.24250
1986-01-01	7.04550
1986-02-01	6.02560
1986-03-01	5.75520
1986-04-01	4.96610
1986-05-01	4.39840
1986-06-01	4.52340
1986-07-01	4.62980
1986-08-01	4.67710
1986-09-01	4.75850
1986-10-01	4.53650
1986-11-01	3.90480
1986-12-01	4.31500
1987-01-01	4.33040
1987-02-01	4.27680
1987-03-01	3.99220
1987-04-01	3.71470
1987-05-01	3.29550
1987-06-01	3.30730
1987-07-01	3.29500
1987-08-01	3.31510
1987-09-01	3.51420
1987-10-01	3.50000
1987-11-01	3.52680
1987-12-01	3.95750
1988-01-01	3.69940
1988-02-01	3.58520
1988-03-01	3.77340
1988-04-01	3.49460
1988-05-01	3.46430
1988-06-01	3.59380
1988-07-01	3.86460
1988-08-01	3.98000
1988-09-01	4.08520
1988-10-01	4.17120
1988-11-01	3.94320
1988-12-01	4.36250
1989-01-01	4.09375
1989-02-01	4.17928
1989-03-01	4.25426
1989-04-01	4.42031
1989-05-01	4.67500
1989-06-01	5.13778
1989-07-01	5.22470
1989-08-01	5.38043
1989-09-01	5.43125
1989-10-01	6.00893
1989-11-01	6.15156
1989-12-01	6.44792
1990-01-01	6.58059
1990-02-01	6.64309
1990-03-01	6.81696
1990-04-01	7.16250
1990-05-01	7.25893
1990-06-01	7.36458
1990-07-01	7.52415
1990-08-01	7.54348
1990-09-01	7.76316
1990-10-01	7.81108
1990-11-01	8.07656
1990-12-01	8.22969
1991-01-01	8.05428
1991-02-01	8.12007
1991-03-01	8.27813
1991-04-01	8.23363
1991-05-01	8.03274
1991-06-01	8.04063
1991-07-01	7.46060
1991-08-01	7.48438
1991-09-01	7.04934
1991-10-01	6.85795
1991-11-01	6.38281
1991-12-01	6.30952
1992-01-01	5.52632
1992-02-01	5.68257
1992-03-01	5.65327
1992-04-01	4.76637
1992-05-01	4.74507
1992-06-01	4.75284
1992-07-01	4.53125
1992-08-01	4.11905
1992-09-01	4.22656
1992-10-01	4.07386
1992-11-01	3.94572
1992-12-01	3.89489
1993-01-01	3.89967
1993-02-01	3.27632
1993-03-01	3.24185
1993-04-01	3.17857
1993-05-01	3.20660
1993-06-01	3.21429
1993-07-01	3.26278
1993-08-01	3.12926
1993-09-01	2.85781
1993-10-01	2.50781
1993-11-01	2.49531
1993-12-01	2.44196
1994-01-01	2.33125
1994-02-01	2.24013
1994-03-01	2.25000
1994-04-01	2.17500
1994-05-01	2.09046
1994-06-01	2.06250
1994-07-01	2.08185
1994-08-01	2.13043
1994-09-01	2.18906
1994-10-01	2.23750
1994-11-01	2.26719
1994-12-01	2.29315
1995-01-01	2.25000
1995-02-01	2.21719
1995-03-01	2.18892
1995-04-01	1.52500
1995-05-01	1.31325
1995-06-01	1.27909
1995-07-01	0.94667
1995-08-01	0.88174
1995-09-01	0.57350
1995-10-01	0.46667
1995-11-01	0.46050
1995-12-01	0.45905
1996-01-01	0.46632
1996-02-01	0.45800
1996-03-01	0.45550
1996-04-01	0.48571
1996-05-01	0.46857
1996-06-01	0.47150
1996-07-01	0.48217
1996-08-01	0.44409
1996-09-01	0.46789
1996-10-01	0.47500
1996-11-01	0.47700
1996-12-01	0.48600
1997-01-01	0.48421
1997-02-01	0.49526
1997-03-01	0.51000
1997-04-01	0.49619
1997-05-01	0.48619
1997-06-01	0.49571
1997-07-01	0.49273
1997-08-01	0.48476
1997-09-01	0.49800
1997-10-01	0.48000
1997-11-01	0.49111
1997-12-01	0.39429
1998-01-01	0.43526
1998-02-01	0.43368
1998-03-01	0.43091
1998-04-01	0.44333
1998-05-01	0.42789
1998-06-01	0.43682
1998-07-01	0.41318
1998-08-01	0.42714
1998-09-01	0.32150
1998-10-01	0.23545
1998-11-01	0.20158
1998-12-01	0.25095
1999-01-01	0.22526
1999-02-01	0.17632
1999-03-01	0.04091
1999-04-01	0.03143
1999-05-01	0.03000
1999-06-01	0.03000
1999-07-01	0.03000
1999-08-01	0.03000
1999-09-01	0.03250
1999-10-01	0.02450
1999-11-01	0.02750
1999-12-01	0.02429
2000-01-01	0.02053
2000-02-01	0.03450
2000-03-01	0.02136
2000-04-01	0.02000
2000-05-01	0.02100
2000-06-01	0.02091
2000-07-01	0.02100
2000-08-01	0.15522
2000-09-01	0.24950
2000-10-01	0.24762
2000-11-01	0.24750
2000-12-01	0.24143
2001-01-01	0.24895
2001-02-01	0.24842
2001-03-01	0.10667
2001-04-01	0.02000
2001-05-01	0.01857
2001-06-01	0.01762
2001-07-01	0.01286
2001-08-01	0.01000
2001-09-01	0.00505
2001-10-01	0.00314
2001-11-01	0.00243
2001-12-01	0.00184
2002-01-01	0.00111
2002-02-01	0.00100
2002-03-01	0.00205
2002-04-01	0.00148
2002-05-01	0.00138
2002-06-01	0.00140
2002-07-01	0.00178
2002-08-01	0.00186
2002-09-01	0.00526
2002-10-01	0.00191
2002-11-01	0.00195
2002-12-01	0.00195
2003-01-01	0.00200
2003-02-01	0.00100
2003-03-01	0.00200
2003-04-01	0.00100
2003-05-01	0.00100
2003-06-01	0.00100
2003-07-01	0.00200
2003-08-01	0.00100
2003-09-01	0.00200
2003-10-01	0.00100
2003-11-01	0.00100
2003-12-01	0.00100
2004-01-01	0.00000
2004-02-01	0.00100
2004-03-01	0.00100
2004-04-01	0.00000
2004-05-01	0.00100
2004-06-01	0.00100
2004-07-01	0.00000
2004-08-01	0.00100
2004-09-01	0.00100
2004-10-01	0.00100
2004-11-01	0.00100
2004-12-01	0.00100
2005-01-01	0.00100
2005-02-01	0.00100
2005-03-01	0.00200
2005-04-01	0.00100
2005-05-01	0.00100
2005-06-01	0.00100
2005-07-01	0.00100
2005-08-01	0.00100
2005-09-01	0.00100
2005-10-01	0.00100
2005-11-01	0.00100
2005-12-01	0.00100
2006-01-01	0.00100
2006-02-01	0.00100
2006-03-01	0.00200
2006-04-01	0.00200
2006-05-01	0.02000
2006-06-01	0.03600
2006-07-01	0.15500
2006-08-01	0.25000
2006-09-01	0.26100
2006-10-01	0.25400
2006-11-01	0.25700
2006-12-01	0.25500
2007-01-01	0.26700
2007-02-01	0.35700
2007-03-01	0.50900
2007-04-01	0.51100
2007-05-01	0.52100
2007-06-01	0.51000
2007-07-01	0.49900
2007-08-01	0.48500
2007-09-01	0.51000
2007-10-01	0.50600
2007-11-01	0.50000
2007-12-01	0.49700
2008-01-01	0.50200
2008-02-01	0.50400
2008-03-01	0.51100
2008-04-01	0.50600
2008-05-01	0.50500
2008-06-01	0.50900
2008-07-01	0.50300
2008-08-01	0.50400
2008-09-01	0.49500
2008-10-01	0.48700
2008-11-01	0.30100
2008-12-01	0.21100
2009-01-01	0.12000
2009-02-01	0.11100
2009-03-01	0.10000
2009-04-01	0.10400
2009-05-01	0.10200
2009-06-01	0.10400
2009-07-01	0.10200
2009-08-01	0.10600
2009-09-01	0.10200
2009-10-01	0.10600
2009-11-01	0.10500
2009-12-01	0.10100
2010-01-01	0.09600
2010-02-01	0.10100
2010-03-01	0.09700
2010-04-01	0.09300
2010-05-01	0.09100
2010-06-01	0.09500
2010-07-01	0.09400
2010-08-01	0.09500
2010-09-01	0.09100
2010-10-01	0.09100
2010-11-01	0.09100
2010-12-01	0.08700
2011-01-01	0.08500
2011-02-01	0.09300
2011-03-01	0.08500
2011-04-01	0.06200
2011-05-01	0.06900
2011-06-01	0.06900
2011-07-01	0.07300
2011-08-01	0.08100
2011-09-01	0.08000
2011-10-01	0.08100
2011-11-01	0.07700
2011-12-01	0.07800
2012-01-01	0.08000
2012-02-01	0.08500
2012-03-01	0.08400
2012-04-01	0.07500
2012-05-01	0.08400
2012-06-01	0.07600
2012-07-01	0.08400
2012-08-01	0.08600
2012-09-01	0.08500
2012-10-01	0.08500
2012-11-01	0.08600
2012-12-01	0.08200
2013-01-01	0.08300
2013-02-01	0.08000
2013-03-01	0.08000
2013-04-01	0.07000
2013-05-01	0.07000
2013-06-01	0.07000
2013-07-01	0.07000
2013-08-01	0.07000
2013-09-01	0.07000
2013-10-01	0.07000
2013-11-01	0.07000
2013-12-01	0.07000
2014-01-01	0.07000
2014-02-01	0.08000
2014-03-01	0.07000
2014-04-01	0.06000
2014-05-01	0.07000
2014-06-01	0.07000
2014-07-01	0.07000
2014-08-01	0.07000
2014-09-01	0.07000
2014-10-01	0.06000
2014-11-01	0.06000
2014-12-01	0.07000
2015-01-01	0.07000
2015-02-01	0.08000
2015-03-01	0.07000
2015-04-01	0.06000
2015-05-01	0.07000
2015-06-01	0.07000
2015-07-01	0.07000
2015-08-01	0.08000
2015-09-01	0.07000
2015-10-01	0.08000
2015-11-01	0.08000
2015-12-01	0.07000
2016-01-01	0.07000
2016-02-01	0.03000
2016-03-01	-0.00300
2016-04-01	-0.03600
2016-05-01	-0.05900
2016-06-01	-0.05500
2016-07-01	-0.04300
2016-08-01	-0.04300
2016-09-01	-0.05200
2016-10-01	-0.03700
2016-11-01	-0.04900
2016-12-01	-0.04400
2017-01-01	-0.04500
2017-02-01	-0.03800
2017-03-01	-0.04200
2017-04-01	-0.05400
2017-05-01	-0.05300
2017-06-01	-0.05600
2017-07-01	-0.05400
2017-08-01	-0.04900
2017-09-01	-0.05800
2017-10-01	-0.03700
2017-11-01	-0.04800
2017-12-01	-0.04200
2018-01-01	-0.04000
2018-02-01	-0.04200
2018-03-01	-0.06200
2018-04-01	-0.06300
2018-05-01	-0.06100
2018-06-01	-0.07100
2018-07-01	-0.07000
2018-08-01	-0.05900
2018-09-01	-0.05800
2018-10-01	-0.06000