Month	Percent
1978-02-01	4.69382529427226
1978-03-01	4.33023588670451
1978-04-01	4.16778148745305
1978-05-01	4.27254813155851
1978-06-01	4.27005368784147
1978-07-01	3.93379360953228
1978-08-01	4.04533266119919
1978-09-01	3.99933594538231
1978-10-01	3.72232206931862
1978-11-01	3.94744026982449
1978-12-01	3.61825636728103
1979-01-01	3.96285203595496
1979-02-01	4.35104961807356
1979-03-01	4.17186636642128
1979-04-01	4.09222357943056
1979-05-01	3.83719544367913
1979-06-01	3.82413781442995
1979-07-01	3.78694198225680
1979-08-01	3.67977154955799
1979-09-01	3.80887817035420
1979-10-01	3.85782049564803
1979-11-01	3.56776516384063
1979-12-01	3.57549690279398
1980-01-01	3.87253991458541
1980-02-01	4.30707308115642
1980-03-01	4.05254845034116
1980-04-01	3.93957042409311
1980-05-01	3.99950042149164
1980-06-01	3.99367240634812
1980-07-01	3.75310980249845
1980-08-01	3.71845884767463
1980-09-01	3.89709894899558
1980-10-01	3.59425949265874
1980-11-01	3.48307424262630
1980-12-01	3.49595001077176
1981-01-01	3.66438236081153
1981-02-01	3.92783253720461
1981-03-01	4.09304458113490
1981-04-01	3.71425064675542
1981-05-01	3.80321224125037
1981-06-01	3.59417133285580
1981-07-01	3.66199835865298
1981-08-01	3.81739672421630
1981-09-01	3.82269797556480
1981-10-01	3.80562987062007
1981-11-01	3.83370143077006
1981-12-01	3.74562699559220
1982-01-01	3.88279905152655
1982-02-01	4.68440135141101
1982-03-01	4.55523270475292
1982-04-01	4.37832490586809
1982-05-01	4.43487580772275
1982-06-01	4.55837237709208
1982-07-01	4.65034173029673
1982-08-01	4.75221485298845
1982-09-01	5.31989681022105
1982-10-01	5.61817801225785
1982-11-01	5.86633600419371
1982-12-01	6.28861683212735
1983-01-01	6.48804209382984
1983-02-01	7.48618393738754
1983-03-01	7.58315836615838
1983-04-01	7.47456588072518
1983-05-01	7.60593482583660
1983-06-01	7.48247497051768
1983-07-01	7.34770943522994
1983-08-01	7.33442825222799
1983-09-01	7.51323835451696
1983-10-01	6.99712229351521
1983-11-01	6.49301059720392
1983-12-01	6.39393420923836
1984-01-01	6.92034382071302
1984-02-01	7.33115272477373
1984-03-01	7.05739855914246
1984-04-01	6.88392770295412
1984-05-01	6.55835407546757
1984-06-01	6.50459885199657
1984-07-01	6.12479428473575
1984-08-01	6.15716183779804
1984-09-01	6.37726731087504
1984-10-01	5.93090474816379
1984-11-01	5.61855620761341
1984-12-01	5.70221620766100
1985-01-01	6.14973779411141
1985-02-01	6.44811717231292
1985-03-01	6.53197957028273
1985-04-01	6.31889238676382
1985-05-01	6.18651031896654
1985-06-01	6.25271567896308
1985-07-01	5.71100763832039
1985-08-01	5.76789182700295
1985-09-01	5.75908466755378
1985-10-01	5.38415216628437
1985-11-01	5.39285590592115
1985-12-01	5.20187671070557
1986-01-01	5.50516414657196
1986-02-01	6.36693223268578
1986-03-01	6.23675959917109
1986-04-01	5.82253484777654
1986-05-01	5.84850380380298
1986-06-01	5.61246524402997
1986-07-01	5.81230479927013
1986-08-01	5.93660693503836
1986-09-01	6.02443672801343
1986-10-01	5.64817292346587
1986-11-01	5.69138068914255
1986-12-01	5.60034039124958
1987-01-01	6.09245411164920
1987-02-01	6.46325182987936
1987-03-01	6.72826553601784
1987-04-01	6.37391118004704
1987-05-01	6.25953961977318
1987-06-01	5.89317715059394
1987-07-01	5.88105627868301
1987-08-01	5.83970915410266
1987-09-01	5.68157252144537
1987-10-01	5.56525518186653
1987-11-01	5.41858974614591
1987-12-01	5.33784591901454
1988-01-01	5.53341372511585
1988-02-01	5.85414419458714
1988-03-01	5.76644681985396
1988-04-01	5.89313361699119
1988-05-01	5.55735734447529
1988-06-01	5.33107204315045
1988-07-01	4.92852961737479
1988-08-01	4.92042938256716
1988-09-01	5.16920128852063
1988-10-01	4.81044948813668
1988-11-01	4.61972764964781
1988-12-01	4.75260988638138
1989-01-01	5.21689558419218
1989-02-01	5.41160881210836
1989-03-01	4.93580711043334
1989-04-01	4.84175030582875
1989-05-01	4.76855077879597
1989-06-01	4.51797739115582
1989-07-01	4.41365602915026
1989-08-01	4.28577629059474
1989-09-01	4.53643111768315
1989-10-01	4.08680644557689
1989-11-01	4.08260718366625
1989-12-01	4.06769807784920
1990-01-01	4.51075775359101
1990-02-01	5.18843932616865
1990-03-01	4.71500930838344
1990-04-01	4.56271543755381
1990-05-01	4.73213170924810
1990-06-01	4.92069966921513
1990-07-01	4.99811347391644
1990-08-01	5.14236986395603
1990-09-01	5.57559106717986
1990-10-01	5.43782227505716
1990-11-01	5.60778088302980
1990-12-01	5.62542026930438
1991-01-01	6.54050802154720
1991-02-01	7.18880146536119
1991-03-01	7.26311019874420
1991-04-01	7.57045563990174
1991-05-01	7.18624528490367
1991-06-01	6.99374128989642
1991-07-01	7.39059515634290
1991-08-01	7.32127505009113
1991-09-01	7.71717695950637
1991-10-01	7.35779253801218
1991-11-01	7.50263662653054
1991-12-01	7.70119942596214
1992-01-01	8.21759253760761
1992-02-01	8.74613943618629
1992-03-01	8.30027163689274
1992-04-01	8.17445557640054
1992-05-01	8.14799909804637
1992-06-01	8.22456379978152
1992-07-01	8.34590296723965
1992-08-01	8.00461292620973
1992-09-01	8.23979423380420
1992-10-01	8.04843652172581
1992-11-01	8.25952295893966
1992-12-01	8.61836469778803
1993-01-01	9.05940439040071
1993-02-01	9.50679594309299
1993-03-01	8.81964543844468
1993-04-01	8.71275683009004
1993-05-01	8.57619941179891
1993-06-01	8.53218923309869
1993-07-01	8.42381463292915
1993-08-01	8.51100298254483
1993-09-01	8.51304576455070
1993-10-01	8.28035378653859
1993-11-01	8.42520232079424
1993-12-01	8.09564426530001
1994-01-01	8.58583291668531
1994-02-01	8.84403966491801
1994-03-01	8.22471824306088
1994-04-01	7.92824302505729
1994-05-01	7.57637186451839
1994-06-01	7.56720072041197
1994-07-01	7.30686285084701
1994-08-01	7.29735585692554
1994-09-01	7.40183002570544
1994-10-01	7.01820458795730
1994-11-01	7.08162704471741
1994-12-01	6.82721345424658
1995-01-01	7.39956992919160
1995-02-01	7.60968008725155
1995-03-01	7.24595454822513
1995-04-01	6.67607048303519
1995-05-01	6.54089397892022
1995-06-01	6.33297992772708
1995-07-01	6.33917936875751
1995-08-01	6.42310233516332
1995-09-01	6.49251552519741
1995-10-01	6.39672029308994
1995-11-01	6.23950248729968
1995-12-01	5.95680993305213
1996-01-01	6.67006107342309
1996-02-01	7.02502565567051
1996-03-01	6.68630862912165
1996-04-01	6.74187554862229
1996-05-01	6.56941597728779
1996-06-01	6.38634781696962
1996-07-01	6.36020307239990
1996-08-01	6.76741357014369
1996-09-01	6.83250393195537
1996-10-01	6.59381845259802
1996-11-01	6.36745843052282
1996-12-01	6.35636916547098
1997-01-01	7.07480712637617
1997-02-01	7.46352881506004
1997-03-01	7.00022536787678
1997-04-01	6.82468533128238
1997-05-01	6.82223144693770
1997-06-01	6.40480303220347
1997-07-01	6.42522254917462
1997-08-01	6.50587657547104
1997-09-01	6.34343905867659
1997-10-01	6.04076082162181
1997-11-01	6.02241553399114
1997-12-01	5.84074955067316
1998-01-01	6.36237585016510
1998-02-01	6.77758746432854
1998-03-01	6.50114583831265
1998-04-01	6.04961632935858
1998-05-01	6.17063245220297
1998-06-01	6.08936050647921
1998-07-01	6.01874794082560
1998-08-01	6.12461824236744
1998-09-01	6.17048536482627
1998-10-01	5.64734712333206
1998-11-01	5.85998455654900
1998-12-01	5.43665461423257
1999-01-01	5.96183274503889
1999-02-01	6.23682548154646
1999-03-01	5.66651683590757
1999-04-01	5.62823239381198
1999-05-01	5.59866848788560
1999-06-01	5.21626905698804
1999-07-01	5.05973598345161
1999-08-01	5.33822348279946
1999-09-01	5.66096155495200
1999-10-01	5.28430764448020
1999-11-01	4.82301150357019
1999-12-01	5.02262791088516
2000-01-01	5.60050501121063
2000-02-01	5.83152022124883
2000-03-01	5.58488834344075
2000-04-01	5.21326007868897
2000-05-01	5.27227017078899
2000-06-01	4.88186101170338
2000-07-01	4.59391135004936
2000-08-01	4.66074721345450
2000-09-01	4.89329811355391
2000-10-01	4.65753272966834
2000-11-01	4.77808861380218
2000-12-01	4.58201711531959
2001-01-01	5.06040471234292
2001-02-01	5.67330640469873
2001-03-01	5.25440242377997
2001-04-01	5.49057464711628
2001-05-01	5.31926590373203
2001-06-01	5.31819607429720
2001-07-01	4.94092525990834
2001-08-01	5.37633709823828
2001-09-01	5.45073422022139
2001-10-01	5.42389867951111
2001-11-01	5.25310849208340
2001-12-01	5.08256486103353
2002-01-01	5.85338137707296
2002-02-01	5.73279967614661
2002-03-01	5.34617258414526
2002-04-01	5.22400727003902
2002-05-01	5.09995378071460
2002-06-01	5.09601475919820
2002-07-01	4.61805035150356
2002-08-01	4.81315816491766
2002-09-01	5.00939368524597
2002-10-01	4.55345214341611
2002-11-01	4.54493501136244
2002-12-01	4.58755672192531
2003-01-01	5.13715430859189
2003-02-01	5.31546117022418
2003-03-01	5.07730889943238
2003-04-01	4.86906411684977
2003-05-01	4.89769396747081
2003-06-01	4.88045650362042
2003-07-01	4.61135626293353
2003-08-01	4.47081710095701
2003-09-01	4.60330188279379
2003-10-01	4.31625610405682
2003-11-01	4.25951058623831
2003-12-01	4.11976118648221
2004-01-01	4.49408232220323
2004-02-01	5.03033499261422
2004-03-01	4.38366036546107
2004-04-01	4.34084214339355
2004-05-01	4.21107666830460
2004-06-01	4.26035030347752
2004-07-01	4.05163100990586
2004-08-01	4.00145377277692
2004-09-01	4.11287023770483
2004-10-01	3.61448371668817
2004-11-01	3.65578160852521
2004-12-01	3.52880547675066
2005-01-01	4.01963670723372
2005-02-01	4.35645464804483
2005-03-01	4.12861724033409
2005-04-01	3.90963219256430
2005-05-01	4.05820792434848
2005-06-01	3.89076302017767
2005-07-01	3.54822792349019
2005-08-01	3.75714578178352
2005-09-01	3.80481519236974
2005-10-01	3.64207981581116
2005-11-01	3.61574630828048
2005-12-01	3.62323328017036
2006-01-01	4.38788491199668
2006-02-01	4.43137498268946
2006-03-01	3.92957399160246
2006-04-01	3.92240951952694
2006-05-01	3.74337039472588
2006-06-01	3.76019653952414
2006-07-01	3.33642348597796
2006-08-01	3.50229916944688
2006-09-01	3.49514004222995
2006-10-01	3.36978691055086
2006-11-01	3.19464412913166
2006-12-01	3.23069880301175
2007-01-01	3.70038624773972
2007-02-01	4.07761577998382
2007-03-01	3.69681009126865
2007-04-01	3.51471028634765
2007-05-01	3.35873167251656
2007-06-01	3.47972148974403
2007-07-01	3.15160724086309
2007-08-01	3.11299105347480
2007-09-01	3.27637138955999
2007-10-01	3.06468551421532
2007-11-01	3.17225509125791
2007-12-01	3.03948795209749
2008-01-01	3.39435977649858
2008-02-01	3.57741918675258
2008-03-01	3.32501831466841
2008-04-01	3.42262434927156
2008-05-01	3.40150927412258
2008-06-01	3.30312018738087
2008-07-01	3.20870365424244
2008-08-01	3.32224950876538
2008-09-01	3.51127714420850
2008-10-01	3.31560419750044
2008-11-01	3.36045436813703
2008-12-01	3.23764939346596
2009-01-01	4.16272693758701
2009-02-01	4.82988888197844
2009-03-01	4.83718515859467
2009-04-01	4.49317625348111
2009-05-01	4.82596193838975
2009-06-01	4.82944352151364
2009-07-01	4.41243056402403
2009-08-01	4.56609587335424
2009-09-01	4.65486431186843
2009-10-01	4.48325653653517
2009-11-01	4.20304435244333
2009-12-01	4.12312127075266
2010-01-01	4.30625145976832
2010-02-01	4.59791855562248
2010-03-01	4.38779556734965
2010-04-01	4.31955805387039
2010-05-01	4.20482398533104
2010-06-01	3.98541091999420
2010-07-01	3.91347377367109
2010-08-01	3.69368068316560
2010-09-01	3.89282518694799
2010-10-01	3.93058813188745
2010-11-01	3.82340981461882
2010-12-01	3.46947522730046
2011-01-01	3.91800780177365
2011-02-01	4.12787235003690
2011-03-01	3.99043559719152
2011-04-01	3.73953164850283
2011-05-01	3.98264367465127
2011-06-01	3.82106678161472
2011-07-01	3.85417691731860
2011-08-01	3.99636709679440
2011-09-01	4.18840547731000
2011-10-01	3.96491194287461
2011-11-01	3.92099516131837
2011-12-01	3.73608139663868
2012-01-01	4.12807107628485
2012-02-01	4.39075078941378
2012-03-01	4.23343844241633
2012-04-01	3.97524167121325
2012-05-01	4.03252677328406
2012-06-01	3.98027786111422
2012-07-01	3.74982450760251
2012-08-01	3.90235981654961
2012-09-01	4.26912193589430
2012-10-01	4.09359532740866
2012-11-01	3.93269727773522
2012-12-01	3.94949051926497
2013-01-01	4.37223457754418
2013-02-01	4.71000085039163
2013-03-01	4.74265926646624
2013-04-01	4.66473345772862
2013-05-01	4.74911920670009
2013-06-01	4.67803392390359
2013-07-01	4.35345502508946
2013-08-01	4.46696260915385
2013-09-01	4.46706909483770
2013-10-01	4.47077384445261
2013-11-01	4.51964190472858
2013-12-01	4.47554828440051
2014-01-01	5.10834403560032
2014-02-01	5.23649073587787
2014-03-01	4.89996158883497
2014-04-01	4.52738319323165
2014-05-01	4.70227803959106
2014-06-01	4.76811716542480
2014-07-01	4.85161691998552
2014-08-01	4.92391437985912
2014-09-01	5.07162040094399
2014-10-01	4.83329761767458
2014-11-01	4.62101158702016
2014-12-01	4.55579756568953
2015-01-01	5.24650773802576
2015-02-01	5.24987472340198
2015-03-01	5.10967260833518
2015-04-01	4.93975489820199
2015-05-01	4.67644447416866
2015-06-01	4.73408456269396
2015-07-01	4.97552652699533
2015-08-01	5.04227973120365
2015-09-01	4.97977003437779
2015-10-01	4.64259035772701
2015-11-01	4.52195469541567
2015-12-01	4.34278050429352
2016-01-01	5.19001375585188
2016-02-01	5.04748634589803
2016-03-01	4.79908018986680
2016-04-01	4.55989487356838
2016-05-01	4.52127555016949
2016-06-01	4.34365844743505
2016-07-01	4.23312762888475
2016-08-01	4.36339165828660
2016-09-01	4.33083992047331
2016-10-01	4.23585350277638
2016-11-01	4.16320545230091
2016-12-01	4.23227740991261
2017-01-01	4.88876908977446
2017-02-01	5.05195352979435
2017-03-01	4.91952377094665
2017-04-01	4.52250217438216
2017-05-01	4.36599930415897
2017-06-01	4.31092743068701
2017-07-01	4.26828763272494
2017-08-01	4.34954836831451
2017-09-01	4.15398362044357
2017-10-01	4.06043310516511
2017-11-01	3.98280251597082
2017-12-01	4.07129353060140
2018-01-01	4.61692662670800
2018-02-01	4.52632661446441
2018-03-01	4.44586377756490
2018-04-01	4.34866634730548
2018-05-01	4.29334764992845
2018-06-01	4.13463820934393
2018-07-01	4.16652627448102
2018-08-01	4.16544803929744
2018-09-01	3.79674415771413