Month	Percent
1978-02-01	3.68639476466244
1978-03-01	3.21751086035316
1978-04-01	3.49571771960003
1978-05-01	3.24783093893467
1978-06-01	3.24307058518237
1978-07-01	3.70427843747993
1978-08-01	3.27648668284344
1978-09-01	3.45919192212126
1978-10-01	3.53749101495388
1978-11-01	3.08048508594482
1978-12-01	3.20944246387743
1979-01-01	3.44294677661156
1979-02-01	4.00220651545293
1979-03-01	3.29857467170506
1979-04-01	3.64078293884991
1979-05-01	3.23853619380728
1979-06-01	3.09533859518024
1979-07-01	3.38045953157102
1979-08-01	2.74609838416136
1979-09-01	3.04328233413582
1979-10-01	2.91481732926950
1979-11-01	2.85619124087755
1979-12-01	2.81477928853036
1980-01-01	2.84765289698434
1980-02-01	2.75259094893034
1980-03-01	2.68702035627278
1980-04-01	2.47896113690227
1980-05-01	2.88883108468212
1980-06-01	2.88571069300008
1980-07-01	2.86451914939772
1980-08-01	3.04637211940894
1980-09-01	3.12520796471640
1980-10-01	2.78696776946134
1980-11-01	3.04930850641834
1980-12-01	3.06397755471144
1981-01-01	2.76222807692838
1981-02-01	2.96044807669220
1981-03-01	2.95121728448438
1981-04-01	2.96315695916907
1981-05-01	3.24013178980004
1981-06-01	3.24888890869924
1981-07-01	3.37373196818199
1981-08-01	3.43928853103673
1981-09-01	3.68170474382013
1981-10-01	2.99123942811946
1981-11-01	3.30586023117928
1981-12-01	2.91743516243552
1982-01-01	3.03921151268564
1982-02-01	2.99353080889946
1982-03-01	3.42076288300312
1982-04-01	3.15952540967893
1982-05-01	2.98567618016976
1982-06-01	2.94709684747317
1982-07-01	3.26501209788206
1982-08-01	3.46249007766850
1982-09-01	3.61625129307991
1982-10-01	4.30489321192537
1982-11-01	4.72790794286628
1982-12-01	4.69486820786601
1983-01-01	5.47898313132116
1983-02-01	5.27521795056735
1983-03-01	5.89190837187634
1983-04-01	6.53189822502432
1983-05-01	6.08197284991085
1983-06-01	6.25723788762432
1983-07-01	5.93321593278200
1983-08-01	5.82770522407385
1983-09-01	6.74430814065982
1983-10-01	6.11827684586384
1983-11-01	5.51205235748272
1983-12-01	5.32326869479922
1984-01-01	6.45229920959649
1984-02-01	5.81870228438385
1984-03-01	6.10983140679864
1984-04-01	5.80177923637109
1984-05-01	5.33423466378432
1984-06-01	5.50899083419074
1984-07-01	5.07980474101430
1984-08-01	5.48351488743601
1984-09-01	5.75632970550144
1984-10-01	5.14684685880317
1984-11-01	5.23211155833256
1984-12-01	5.33644477579017
1985-01-01	5.80482610325759
1985-02-01	5.64475200229558
1985-03-01	6.36996809734386
1985-04-01	6.18924436124301
1985-05-01	6.66346925509910
1985-06-01	6.85133418772671
1985-07-01	6.37593348378428
1985-08-01	6.19639334698309
1985-09-01	6.72374126361760
1985-10-01	6.10565879924137
1985-11-01	5.66948483472592
1985-12-01	5.39408247581327
1986-01-01	5.19344523125694
1986-02-01	5.25369265898729
1986-03-01	5.11867820807528
1986-04-01	5.12802000867048
1986-05-01	5.38318063652407
1986-06-01	4.88185275346436
1986-07-01	5.01373736553895
1986-08-01	5.42614307642286
1986-09-01	6.01375197583504
1986-10-01	5.64788090930977
1986-11-01	5.98077589652462
1986-12-01	6.34482418401516
1987-01-01	6.12624290840519
1987-02-01	5.89727167952560
1987-03-01	5.96530427403994
1987-04-01	5.92353076074598
1987-05-01	5.74915067607598
1987-06-01	5.85153679647280
1987-07-01	5.60255883892672
1987-08-01	5.11757001734496
1987-09-01	5.74575162815563
1987-10-01	6.40761701865406
1987-11-01	6.25926064997889
1987-12-01	5.41215858915627
1988-01-01	5.82281092312764
1988-02-01	6.21102882689213
1988-03-01	6.83597925757332
1988-04-01	6.64712331782404
1988-05-01	6.28646063848003
1988-06-01	5.92725221668455
1988-07-01	5.73599223716237
1988-08-01	5.94818159441359
1988-09-01	6.13782879296127
1988-10-01	5.32635413910407
1988-11-01	4.85912762445051
1988-12-01	4.93181415185007
1989-01-01	5.83257690135311
1989-02-01	6.31360506086198
1989-03-01	6.03446588225108
1989-04-01	5.46786306141500
1989-05-01	5.54567606931473
1989-06-01	4.53243956032626
1989-07-01	5.41969298312603
1989-08-01	4.82378479233500
1989-09-01	4.94908072764808
1989-10-01	4.72722557711443
1989-11-01	4.90142145774122
1989-12-01	4.99045178159777
1990-01-01	4.86532753353169
1990-02-01	5.56522617790515
1990-03-01	5.17107047495990
1990-04-01	5.38053768943616
1990-05-01	5.74860863952431
1990-06-01	5.45441603427797
1990-07-01	5.63234132358546
1990-08-01	5.36417899445180
1990-09-01	5.71010119359615
1990-10-01	5.56630891772632
1990-11-01	5.63317001200508
1990-12-01	5.41578481667556
1991-01-01	6.51836286289005
1991-02-01	6.64632216480535
1991-03-01	7.40873441038964
1991-04-01	7.95935462161833
1991-05-01	7.55275573802925
1991-06-01	7.43829522904658
1991-07-01	8.02113210808205
1991-08-01	8.55666167147336
1991-09-01	9.53452690682275
1991-10-01	8.65861159435403
1991-11-01	8.58608028964772
1991-12-01	8.51277770831450
1992-01-01	9.77008228816915
1992-02-01	8.89290548198991
1992-03-01	8.87079354115245
1992-04-01	9.10426750570906
1992-05-01	9.32323511199114
1992-06-01	8.73349034465558
1992-07-01	9.71819479168333
1992-08-01	9.22436501768358
1992-09-01	10.00398874812540
1992-10-01	10.53702902813520
1992-11-01	10.35837362242760
1992-12-01	9.54191901529458
1993-01-01	10.22502371338620
1993-02-01	11.29266347463530
1993-03-01	11.22487115056240
1993-04-01	10.34624823296650
1993-05-01	10.85759252329050
1993-06-01	11.14273716700630
1993-07-01	10.75113661584340
1993-08-01	11.42045037252700
1993-09-01	10.75801211995700
1993-10-01	11.38245602754430
1993-11-01	11.32219173747360
1993-12-01	11.38794681948950
1994-01-01	11.92720735482490
1994-02-01	11.66999560184410
1994-03-01	11.02717710289710
1994-04-01	9.56241131730322
1994-05-01	9.41052535449864
1994-06-01	9.47613589576008
1994-07-01	9.16317168828379
1994-08-01	8.99270433446965
1994-09-01	9.21073449789851
1994-10-01	8.51676498098893
1994-11-01	8.66361175122925
1994-12-01	8.58849116616250
1995-01-01	8.09111757347158
1995-02-01	8.86395546691996
1995-03-01	7.29794728685715
1995-04-01	6.92656183953157
1995-05-01	7.43803061205620
1995-06-01	7.68435387353849
1995-07-01	7.08168681326494
1995-08-01	7.44466282505829
1995-09-01	8.13391889568884
1995-10-01	7.82692980394565
1995-11-01	7.72633643464703
1995-12-01	7.06179117342020
1996-01-01	7.81367622678080
1996-02-01	8.32384787043260
1996-03-01	8.13218601264813
1996-04-01	7.75386815889288
1996-05-01	7.12609571334455
1996-06-01	7.49461871558389
1996-07-01	7.39772553991955
1996-08-01	7.88691729647975
1996-09-01	7.79669952926533
1996-10-01	7.03688013555385
1996-11-01	7.50825444630231
1996-12-01	6.76179761500202
1997-01-01	7.47945306744409
1997-02-01	7.51626685145462
1997-03-01	7.21191093385104
1997-04-01	6.87588210830859
1997-05-01	6.34804641969353
1997-06-01	6.54335482811852
1997-07-01	6.50450991280686
1997-08-01	7.19369342396387
1997-09-01	6.88653356505676
1997-10-01	6.28863799090288
1997-11-01	5.90103211093922
1997-12-01	6.56552628180758
1998-01-01	6.83719763429835
1998-02-01	7.14323654258348
1998-03-01	6.55080509200688
1998-04-01	5.83814782012616
1998-05-01	6.56360986100496
1998-06-01	6.41195169370707
1998-07-01	6.51577721807461
1998-08-01	5.97957295617727
1998-09-01	6.29830033915644
1998-10-01	5.99710968622279
1998-11-01	6.06777354829194
1998-12-01	5.38148671488097
1999-01-01	5.70365765333109
1999-02-01	6.79848210708079
1999-03-01	6.34212883388596
1999-04-01	5.03989544902552
1999-05-01	5.51698171963822
1999-06-01	5.32519734817098
1999-07-01	5.00042658962151
1999-08-01	5.42411292058441
1999-09-01	5.65767790366515
1999-10-01	4.97003938058204
1999-11-01	5.14605840971825
1999-12-01	5.06085491112306
2000-01-01	5.61126235466692
2000-02-01	5.56403484264382
2000-03-01	5.20796217185492
2000-04-01	4.67914750856980
2000-05-01	4.39468140372808
2000-06-01	4.74363911233922
2000-07-01	3.77947765454806
2000-08-01	3.96713478951855
2000-09-01	4.45774871605700
2000-10-01	3.86871960292450
2000-11-01	4.01152543228239
2000-12-01	4.27997434234058
2001-01-01	4.54233993826235
2001-02-01	4.45315336989633
2001-03-01	4.08584665954305
2001-04-01	4.29718397499723
2001-05-01	4.80908623321300
2001-06-01	4.90762997301765
2001-07-01	4.49660751847345
2001-08-01	4.78308347135204
2001-09-01	5.03945598388287
2001-10-01	4.60659433479590
2001-11-01	4.36241349886344
2001-12-01	4.52610677359296
2002-01-01	5.12869967028631
2002-02-01	4.93843625222842
2002-03-01	4.34212211383335
2002-04-01	4.07890374266989
2002-05-01	4.51969241024475
2002-06-01	4.21020975331520
2002-07-01	4.04761473609001
2002-08-01	3.82144507272763
2002-09-01	4.13548816974982
2002-10-01	3.94239982265490
2002-11-01	4.30787252814640
2002-12-01	4.15060351969459
2003-01-01	4.38857523251572
2003-02-01	4.14522418313032
2003-03-01	3.71311665638463
2003-04-01	3.62778736021280
2003-05-01	3.82043420936620
2003-06-01	3.70241276077130
2003-07-01	3.53127663955665
2003-08-01	3.82921046927801
2003-09-01	3.76651595221187
2003-10-01	4.08817957627425
2003-11-01	3.32675653832140
2003-12-01	3.39270819603464
2004-01-01	3.60775034913546
2004-02-01	3.94688015568875
2004-03-01	3.13989770529338
2004-04-01	4.02838417417802
2004-05-01	3.53739676941965
2004-06-01	3.44060803804058
2004-07-01	3.53989292742706
2004-08-01	3.75817544197578
2004-09-01	3.93194225256605
2004-10-01	3.30105752438857
2004-11-01	3.51893886345909
2004-12-01	2.89933784730288
2005-01-01	3.93520223263029
2005-02-01	4.05489142091217
2005-03-01	3.59072774604554
2005-04-01	3.66066154066947
2005-05-01	3.34220703775799
2005-06-01	3.03726865646199
2005-07-01	3.04605089960073
2005-08-01	2.92568442175838
2005-09-01	3.46163443745015
2005-10-01	3.02834006298987
2005-11-01	3.35045127685376
2005-12-01	3.12430099308961
2006-01-01	3.33200574626740
2006-02-01	3.71314506457227
2006-03-01	3.33315665555428
2006-04-01	2.93710630525941
2006-05-01	3.44058976484854
2006-06-01	3.38109000321272
2006-07-01	3.29934732826868
2006-08-01	3.22580606674050
2006-09-01	3.48239786246613
2006-10-01	2.88491743360763
2006-11-01	2.88250164233159
2006-12-01	2.84317786227670
2007-01-01	3.62448456069202
2007-02-01	3.49564639310388
2007-03-01	2.82462110028565
2007-04-01	2.97433571204715
2007-05-01	2.82297945825941
2007-06-01	2.49276631716631
2007-07-01	2.31530212492301
2007-08-01	2.45529252281257
2007-09-01	2.42412768203638
2007-10-01	2.81581307317899
2007-11-01	2.24271619933093
2007-12-01	2.39234691181938
2008-01-01	2.76509931121431
2008-02-01	2.70259373298968
2008-03-01	2.86581105707040
2008-04-01	2.72424144693056
2008-05-01	2.63811203725147
2008-06-01	2.59430674817329
2008-07-01	2.46214484935874
2008-08-01	2.19970581927231
2008-09-01	2.56371137625925
2008-10-01	2.43141360966887
2008-11-01	2.46157704362073
2008-12-01	2.90943785315983
2009-01-01	3.33842374766781
2009-02-01	3.52506447755977
2009-03-01	3.37113623286819
2009-04-01	3.21174121778125
2009-05-01	3.25822408726687
2009-06-01	3.34460240672893
2009-07-01	3.27941532795528
2009-08-01	3.26314122064317
2009-09-01	3.30264910991376
2009-10-01	3.33572683579006
2009-11-01	3.44953958450926
2009-12-01	3.42568641904620
2010-01-01	3.85341163003068
2010-02-01	3.99017373188286
2010-03-01	3.78081310215474
2010-04-01	3.55346228897478
2010-05-01	3.10902282616004
2010-06-01	2.89842174911085
2010-07-01	3.31029001331743
2010-08-01	3.10101538362113
2010-09-01	3.35102477089124
2010-10-01	2.82679972094136
2010-11-01	2.59453119273385
2010-12-01	2.69721253415748
2011-01-01	3.28493822297143
2011-02-01	3.31036340088509
2011-03-01	3.07175999494795
2011-04-01	3.62828750642585
2011-05-01	3.19207501625056
2011-06-01	3.03222615298996
2011-07-01	3.08858520010817
2011-08-01	3.95775360132230
2011-09-01	3.34228743703899
2011-10-01	3.80579036700067
2011-11-01	3.27415424108762
2011-12-01	2.95067174283497
2012-01-01	3.28997205231289
2012-02-01	3.94509272061362
2012-03-01	3.37190746248482
2012-04-01	3.31225117575073
2012-05-01	3.04506093104032
2012-06-01	3.26840858521299
2012-07-01	3.29304742101332
2012-08-01	3.69134266410197
2012-09-01	4.15674055756688
2012-10-01	3.40893971309717
2012-11-01	3.34668426200264
2012-12-01	3.31418532582085
2013-01-01	4.11745304210120
2013-02-01	3.94196418180497
2013-03-01	3.88173298276190
2013-04-01	3.51884712819014
2013-05-01	3.43661804035268
2013-06-01	3.75604647819873
2013-07-01	3.92071377027928
2013-08-01	4.13350934382138
2013-09-01	4.16710539372324
2013-10-01	3.69739648644951
2013-11-01	3.56720624303121
2013-12-01	3.80448666946656
2014-01-01	4.52554599838229
2014-02-01	5.19001643235474
2014-03-01	4.48307661885727
2014-04-01	4.32793065945640
2014-05-01	3.74177261011920
2014-06-01	3.94479866348778
2014-07-01	4.01617838661842
2014-08-01	3.67681088384828
2014-09-01	3.31906195941759
2014-10-01	4.04485577301793
2014-11-01	3.93507059955465
2014-12-01	3.87938120396616
2015-01-01	4.37465749475965
2015-02-01	4.68269180551801
2015-03-01	4.05864264413975
2015-04-01	4.02818790034144
2015-05-01	4.01130193730745
2015-06-01	4.21393545461945
2015-07-01	4.49760924128457
2015-08-01	4.49397716990114
2015-09-01	4.38312393431886
2015-10-01	4.30968754429859
2015-11-01	4.09205498150662
2015-12-01	3.90023093239532
2016-01-01	4.76720818820639
2016-02-01	4.58565310868551
2016-03-01	4.43347580034128
2016-04-01	4.13375302169732
2016-05-01	4.39144547677401
2016-06-01	4.17532515737032
2016-07-01	4.40538302701390
2016-08-01	4.52713913086475
2016-09-01	4.11405459769628
2016-10-01	3.95699666493566
2016-11-01	3.72512718730541
2016-12-01	3.83347264480273
2017-01-01	4.06347813769958
2017-02-01	4.56334380471223
2017-03-01	4.07236787382154
2017-04-01	3.96083841090951
2017-05-01	3.88376299353610
2017-06-01	4.02649238480431
2017-07-01	4.30054037113220
2017-08-01	4.09084049321703
2017-09-01	3.98297894305859
2017-10-01	3.95862870375729
2017-11-01	3.81697701487903
2017-12-01	4.14327467511510
2018-01-01	4.36383465347384
2018-02-01	4.65208104078470
2018-03-01	4.75040005761930
2018-04-01	4.27483470549758
2018-05-01	4.31361006462789
2018-06-01	4.77649903813200
2018-07-01	4.62181349678055
2018-08-01	4.35752333954863
2018-09-01	3.73505646741231