Month	Percent
1989-01-01	3.60655737704918
1989-02-01	3.92426174825861
1989-03-01	3.63057920838402
1989-04-01	2.98397494934610
1989-05-01	2.77421717634133
1989-06-01	2.66215350837069
1989-07-01	2.81780633318036
1989-08-01	2.81496423986796
1989-09-01	2.79488829640526
1989-10-01	2.76107162383816
1989-11-01	2.86291062580290
1989-12-01	3.18519214507188
1990-01-01	3.89899380804954
1990-02-01	3.91072109881724
1990-03-01	2.99395715070500
1990-04-01	2.52639177118109
1990-05-01	2.56524848051484
1990-06-01	2.42445850788840
1990-07-01	2.76988636363636
1990-08-01	2.73850008949347
1990-09-01	2.90293855743544
1990-10-01	2.76914884175024
1990-11-01	2.74548381327133
1990-12-01	2.79745685740236
1991-01-01	3.42710528727206
1991-02-01	3.47889773871647
1991-03-01	3.06584910690483
1991-04-01	2.53926701570681
1991-05-01	2.41809672386895
1991-06-01	2.31433506044905
1991-07-01	2.58955545964609
1991-08-01	2.38465526179368
1991-09-01	2.52238292011019
1991-10-01	2.50407340708344
1991-11-01	2.57425742574257
1991-12-01	2.65277534582385
1992-01-01	3.07418924922257
1992-02-01	3.42568823581482
1992-03-01	3.09411259131930
1992-04-01	2.71854557811571
1992-05-01	2.45305362882761
1992-06-01	2.34975910742963
1992-07-01	2.51901944209636
1992-08-01	2.71025662742441
1992-09-01	2.72557982055189
1992-10-01	2.61360762161706
1992-11-01	2.71987798678190
1992-12-01	2.90442127036111
1993-01-01	3.25954331532160
1993-02-01	3.94725351497686
1993-03-01	3.68313108870279
1993-04-01	3.51839352008100
1993-05-01	3.30959363217428
1993-06-01	3.24405257028781
1993-07-01	3.26086956521739
1993-08-01	3.14528207688467
1993-09-01	2.91011889914359
1993-10-01	3.10945273631841
1993-11-01	3.10399203253382
1993-12-01	3.09278350515464
1994-01-01	3.33812220062537
1994-02-01	3.67907055059774
1994-03-01	3.50542802685009
1994-04-01	3.21127222085689
1994-05-01	2.67711394058113
1994-06-01	2.45413779046066
1994-07-01	2.59084243115529
1994-08-01	2.66395112016293
1994-09-01	2.56889683765548
1994-10-01	2.33956133225020
1994-11-01	2.48654818196641
1994-12-01	2.54195459032577
1995-01-01	2.72554055173556
1995-02-01	2.96858250185536
1995-03-01	2.61597205296937
1995-04-01	2.28350888477929
1995-05-01	2.15723873441994
1995-06-01	2.00575355601726
1995-07-01	2.12171970965941
1995-08-01	2.20218622835714
1995-09-01	2.22257627658727
1995-10-01	2.23384030418251
1995-11-01	2.13984567655716
1995-12-01	2.11721139913058
1996-01-01	2.43208068976737
1996-02-01	2.68292682926829
1996-03-01	2.56266066838046
1996-04-01	2.34838301573496
1996-05-01	2.28629792583281
1996-06-01	2.27290540010973
1996-07-01	2.22152690863580
1996-08-01	2.33922703802222
1996-09-01	2.16660148611654
1996-10-01	2.20903910701741
1996-11-01	2.37834454701925
1996-12-01	2.49132765689057
1997-01-01	2.86647026037105
1997-02-01	3.33280178599904
1997-03-01	3.72082093059690
1997-04-01	2.96215880893300
1997-05-01	2.66109692890849
1997-06-01	2.49980651652349
1997-07-01	2.39271380055573
1997-08-01	2.35794356397371
1997-09-01	2.38463920718489
1997-10-01	2.30471771075019
1997-11-01	2.89664761316237
1997-12-01	3.36009978950651
1998-01-01	5.08690798915643
1998-02-01	6.69153833941896
1998-03-01	7.49745915096552
1998-04-01	7.67263427109974
1998-05-01	7.93454769990738
1998-06-01	8.06389381896751
1998-07-01	8.68560868560869
1998-08-01	8.51509741519832
1998-09-01	8.44994201778121
1998-10-01	8.10456508328192
1998-11-01	8.32103177686271
1998-12-01	8.66718628215121
1999-01-01	9.49992036948559
1999-02-01	9.76721862251020
1999-03-01	9.06444252104808
1999-04-01	8.23346303501946
1999-05-01	7.60886409421974
1999-06-01	7.50000000000000
1999-07-01	7.50000000000000
1999-08-01	7.00000000000000
1999-09-01	5.90000000000000
1999-10-01	5.70000000000000
1999-11-01	5.30000000000000
1999-12-01	5.90000000000000
2000-01-01	6.40000000000000
2000-02-01	6.30000000000000
2000-03-01	5.40000000000000
2000-04-01	5.10000000000000
2000-05-01	4.60000000000000
2000-06-01	4.50000000000000
2000-07-01	4.50000000000000
2000-08-01	4.60000000000000
2000-09-01	4.50000000000000
2000-10-01	4.30000000000000
2000-11-01	4.40000000000000
2000-12-01	5.00000000000000
2001-01-01	5.80000000000000
2001-02-01	6.10000000000000
2001-03-01	5.70000000000000
2001-04-01	4.50000000000000
2001-05-01	4.10000000000000
2001-06-01	4.00000000000000
2001-07-01	4.00000000000000
2001-08-01	4.00000000000000
2001-09-01	3.80000000000000
2001-10-01	3.70000000000000
2001-11-01	3.80000000000000
2001-12-01	4.10000000000000
2002-01-01	4.50000000000000
2002-02-01	4.40000000000000
2002-03-01	4.00000000000000
2002-04-01	3.70000000000000
2002-05-01	3.40000000000000
2002-06-01	3.40000000000000
2002-07-01	3.40000000000000
2002-08-01	3.60000000000000
2002-09-01	3.10000000000000
2002-10-01	3.30000000000000
2002-11-01	3.30000000000000
2002-12-01	3.50000000000000
2003-01-01	3.80000000000000
2003-02-01	4.00000000000000
2003-03-01	3.90000000000000
2003-04-01	3.60000000000000
2003-05-01	3.60000000000000
2003-06-01	3.60000000000000
2003-07-01	3.70000000000000
2003-08-01	3.70000000000000
2003-09-01	3.60000000000000
2003-10-01	3.70000000000000
2003-11-01	3.70000000000000
2003-12-01	4.00000000000000
2004-01-01	4.20000000000000
2004-02-01	4.20000000000000
2004-03-01	3.90000000000000
2004-04-01	3.70000000000000
2004-05-01	3.70000000000000
2004-06-01	3.50000000000000
2004-07-01	4.00000000000000
2004-08-01	3.90000000000000
2004-09-01	3.60000000000000
2004-10-01	3.70000000000000
2004-11-01	3.90000000000000
2004-12-01	4.20000000000000
2005-01-01	4.50000000000000
2005-02-01	4.50000000000000
2005-03-01	4.20000000000000
2005-04-01	4.00000000000000
2005-05-01	3.70000000000000
2005-06-01	3.80000000000000
2005-07-01	4.00000000000000
2005-08-01	4.00000000000000
2005-09-01	3.90000000000000
2005-10-01	3.80000000000000
2005-11-01	3.60000000000000
2005-12-01	3.90000000000000
2006-01-01	4.20000000000000
2006-02-01	4.50000000000000
2006-03-01	4.20000000000000
2006-04-01	4.00000000000000
2006-05-01	3.70000000000000
2006-06-01	3.80000000000000
2006-07-01	3.80000000000000
2006-08-01	3.70000000000000
2006-09-01	3.60000000000000
2006-10-01	3.70000000000000
2006-11-01	3.60000000000000
2006-12-01	3.70000000000000
2007-01-01	4.10000000000000
2007-02-01	4.10000000000000
2007-03-01	4.00000000000000
2007-04-01	3.90000000000000
2007-05-01	3.70000000000000
2007-06-01	3.60000000000000
2007-07-01	3.60000000000000
2007-08-01	3.60000000000000
2007-09-01	3.40000000000000
2007-10-01	3.40000000000000
2007-11-01	3.30000000000000
2007-12-01	3.40000000000000
2008-01-01	3.60000000000000
2008-02-01	3.90000000000000
2008-03-01	3.80000000000000
2008-04-01	3.60000000000000
2008-05-01	3.40000000000000
2008-06-01	3.30000000000000
2008-07-01	3.50000000000000
2008-08-01	3.60000000000000
2008-09-01	3.40000000000000
2008-10-01	3.40000000000000
2008-11-01	3.50000000000000
2008-12-01	3.70000000000000
2009-01-01	4.10000000000000
2009-02-01	4.40000000000000
2009-03-01	4.50000000000000
2009-04-01	4.30000000000000
2009-05-01	4.20000000000000
2009-06-01	4.20000000000000
2009-07-01	4.30000000000000
2009-08-01	4.20000000000000
2009-09-01	3.80000000000000
2009-10-01	3.60000000000000
2009-11-01	3.70000000000000
2009-12-01	3.70000000000000
2010-01-01	5.10000000000000
2010-02-01	5.00000000000000
2010-03-01	4.40000000000000
2010-04-01	4.20000000000000
2010-05-01	3.50000000000000
2010-06-01	3.80000000000000
2010-07-01	4.00000000000000
2010-08-01	3.60000000000000
2010-09-01	3.60000000000000
2010-10-01	3.50000000000000
2010-11-01	3.30000000000000
2010-12-01	3.70000000000000
2011-01-01	3.90000000000000
2011-02-01	4.50000000000000
2011-03-01	4.40000000000000
2011-04-01	4.00000000000000
2011-05-01	3.40000000000000
2011-06-01	3.40000000000000
2011-07-01	3.60000000000000
2011-08-01	3.30000000000000
2011-09-01	3.30000000000000
2011-10-01	3.20000000000000
2011-11-01	3.10000000000000
2011-12-01	3.20000000000000
2012-01-01	3.60000000000000
2012-02-01	4.10000000000000
2012-03-01	3.90000000000000
2012-04-01	3.60000000000000
2012-05-01	3.20000000000000
2012-06-01	3.40000000000000
2012-07-01	3.30000000000000
2012-08-01	3.20000000000000
2012-09-01	3.10000000000000
2012-10-01	2.90000000000000
2012-11-01	3.00000000000000
2012-12-01	3.30000000000000
2013-01-01	3.60000000000000
2013-02-01	4.10000000000000
2013-03-01	3.60000000000000
2013-04-01	3.30000000000000
2013-05-01	3.10000000000000
2013-06-01	3.20000000000000
2013-07-01	3.40000000000000
2013-08-01	3.30000000000000
2013-09-01	2.90000000000000
2013-10-01	2.90000000000000
2013-11-01	2.80000000000000
2013-12-01	3.10000000000000
2014-01-01	3.50000000000000
2014-02-01	4.20000000000000
2014-03-01	3.90000000000000
2014-04-01	3.80000000000000
2014-05-01	3.40000000000000
2014-06-01	3.50000000000000
2014-07-01	3.30000000000000
2014-08-01	3.50000000000000
2014-09-01	3.30000000000000
2014-10-01	3.30000000000000
2014-11-01	3.10000000000000
2014-12-01	3.40000000000000
2015-01-01	3.80000000000000
2015-02-01	4.30000000000000
2015-03-01	4.00000000000000
2015-04-01	3.80000000000000
2015-05-01	3.70000000000000
2015-06-01	3.90000000000000
2015-07-01	3.80000000000000
2015-08-01	3.50000000000000
2015-09-01	3.40000000000000
2015-10-01	3.10000000000000
2015-11-01	3.20000000000000
2015-12-01	3.30000000000000
2016-01-01	3.70000000000000
2016-02-01	4.70000000000000
2016-03-01	4.40000000000000
2016-04-01	4.00000000000000
2016-05-01	3.70000000000000
2016-06-01	3.80000000000000
2016-07-01	3.70000000000000
2016-08-01	3.80000000000000
2016-09-01	3.70000000000000
2016-10-01	3.30000000000000
2016-11-01	3.10000000000000
2016-12-01	3.10000000000000
2017-01-01	3.70000000000000
2017-02-01	4.70000000000000
2017-03-01	4.10000000000000
2017-04-01	4.30000000000000
2017-05-01	3.70000000000000
2017-06-01	3.90000000000000
2017-07-01	3.60000000000000
2017-08-01	3.80000000000000
2017-09-01	3.60000000000000
2017-10-01	3.40000000000000
2017-11-01	3.30000000000000
2017-12-01	3.50000000000000
2018-01-01	3.70000000000000
2018-02-01	4.30000000000000
2018-03-01	4.60000000000000
2018-04-01	4.20000000000000
2018-05-01	4.20000000000000
2018-06-01	3.80000000000000
2018-07-01	3.80000000000000
2018-08-01	4.20000000000000
2018-09-01	3.80000000000000