Month	Percent
1978-02-01	20.5549313712911
1978-03-01	23.1574186125811
1978-04-01	23.8458215188456
1978-05-01	24.2947671003005
1978-06-01	24.4864498474416
1978-07-01	25.2373038683732
1978-08-01	25.3872624489926
1978-09-01	25.5375152537786
1978-10-01	25.4368368560841
1978-11-01	26.5729474846489
1978-12-01	19.3264366163660
1979-01-01	19.9531064402912
1979-02-01	21.0289567005743
1979-03-01	22.4362636366508
1979-04-01	22.9849251906711
1979-05-01	23.2677453250784
1979-06-01	24.8434284883172
1979-07-01	24.5966552179449
1979-08-01	24.7261016709481
1979-09-01	23.7941636833263
1979-10-01	24.8160134187109
1979-11-01	25.1945070502062
1979-12-01	18.4191646972166
1980-01-01	19.4750851357066
1980-02-01	20.3217246281561
1980-03-01	22.2231264049774
1980-04-01	23.1471897996642
1980-05-01	21.4272021365420
1980-06-01	22.5679985653804
1980-07-01	22.8924285190930
1980-08-01	23.6166789921466
1980-09-01	22.5287647296992
1980-10-01	23.8674690053383
1980-11-01	24.2734697868634
1980-12-01	16.6420785031192
1981-01-01	18.4643993247439
1981-02-01	18.9424561644260
1981-03-01	20.1125968407604
1981-04-01	21.2310471307511
1981-05-01	20.7839608840907
1981-06-01	22.3796394674135
1981-07-01	22.3700927564910
1981-08-01	23.5028984190975
1981-09-01	21.9663384388648
1981-10-01	23.3924681233418
1981-11-01	24.5348698665515
1981-12-01	17.7279269625257
1982-01-01	19.2465279924266
1982-02-01	19.2327923988746
1982-03-01	20.8696176685119
1982-04-01	22.5503381368938
1982-05-01	22.0908629231406
1982-06-01	23.4238029187010
1982-07-01	23.1222088631837
1982-08-01	24.0413866349180
1982-09-01	22.7795894799651
1982-10-01	23.4229453087336
1982-11-01	24.2401972259008
1982-12-01	18.4941248402281
1983-01-01	19.6396202214011
1983-02-01	20.5932287068900
1983-03-01	22.2396561626041
1983-04-01	23.7570830221245
1983-05-01	23.0736472873246
1983-06-01	24.9434796762851
1983-07-01	24.7859330950221
1983-08-01	25.9012160484424
1983-09-01	24.1160645004148
1983-10-01	25.6437239108448
1983-11-01	25.9856132882284
1983-12-01	19.8341314567548
1984-01-01	21.2806820693119
1984-02-01	22.3053305652514
1984-03-01	23.1529063461787
1984-04-01	24.1040208624461
1984-05-01	24.3397728904643
1984-06-01	25.2777365047336
1984-07-01	24.5491873630581
1984-08-01	25.6589248471255
1984-09-01	25.0789043417674
1984-10-01	26.4934757516790
1984-11-01	26.5035797960528
1984-12-01	21.9308984726238
1985-01-01	21.5776978330233
1985-02-01	22.6251109508127
1985-03-01	23.6467480966717
1985-04-01	24.7957702297100
1985-05-01	24.2720668817415
1985-06-01	24.9574476328954
1985-07-01	25.9769688645378
1985-08-01	26.2699022202507
1985-09-01	23.9991040115969
1985-10-01	26.5917878612760
1985-11-01	26.0954018913061
1985-12-01	22.2200439851934
1986-01-01	21.1808201260121
1986-02-01	22.1967153756482
1986-03-01	23.0360330574812
1986-04-01	22.8113365825481
1986-05-01	23.8894530028008
1986-06-01	25.4167494224940
1986-07-01	25.1780424174228
1986-08-01	26.4626769760111
1986-09-01	24.7039176602920
1986-10-01	26.0906787042255
1986-11-01	27.4512066959681
1986-12-01	20.3411601351919
1987-01-01	22.4890227748944
1987-02-01	23.0780291119504
1987-03-01	24.2413810448153
1987-04-01	25.1070498195345
1987-05-01	25.5753506622661
1987-06-01	26.0335368562139
1987-07-01	24.4417575225531
1987-08-01	27.1158137702162
1987-09-01	27.0189587993886
1987-10-01	27.3816515376390
1987-11-01	28.3983332310703
1987-12-01	21.2003087831029
1988-01-01	22.1720137362539
1988-02-01	24.0886716011844
1988-03-01	24.1411059542262
1988-04-01	24.4969051922879
1988-05-01	26.1230900312873
1988-06-01	26.5420934673225
1988-07-01	26.3358960427891
1988-08-01	27.4427280067266
1988-09-01	26.0474954427989
1988-10-01	27.0676395022026
1988-11-01	28.3962749945115
1988-12-01	21.2510434057428
1989-01-01	22.2386933253260
1989-02-01	22.9924947025336
1989-03-01	24.4921457154211
1989-04-01	24.8962434663912
1989-05-01	25.1122648123499
1989-06-01	25.9398998422297
1989-07-01	24.6897117146887
1989-08-01	26.1675278888294
1989-09-01	24.6383651937537
1989-10-01	25.4229623763809
1989-11-01	27.0029254808048
1989-12-01	21.5978224651928
1990-01-01	22.2549165250832
1990-02-01	23.8013052641067
1990-03-01	24.6059253696596
1990-04-01	24.5580633058569
1990-05-01	24.8198594320437
1990-06-01	26.2895032222928
1990-07-01	24.8226837823664
1990-08-01	27.0455440262333
1990-09-01	25.0555082243576
1990-10-01	25.9376587896909
1990-11-01	26.8059790442665
1990-12-01	20.7255486069684
1991-01-01	23.2827236965175
1991-02-01	24.9977893063661
1991-03-01	26.3152453750657
1991-04-01	25.6931782473183
1991-05-01	27.6606819159186
1991-06-01	29.6638299352545
1991-07-01	29.6440122318999
1991-08-01	30.0704721461879
1991-09-01	28.5275258898871
1991-10-01	29.6128263612211
1991-11-01	30.4400176824688
1991-12-01	23.4370525936438
1992-01-01	24.9018933976787
1992-02-01	26.0521822380309
1992-03-01	27.3572236043589
1992-04-01	28.0629353221610
1992-05-01	28.0200590764213
1992-06-01	29.2302695521522
1992-07-01	27.5743017299526
1992-08-01	29.3829715816530
1992-09-01	28.4171269856217
1992-10-01	29.1014112795011
1992-11-01	30.9768036838780
1992-12-01	24.3754282329205
1993-01-01	24.0884887494866
1993-02-01	26.2674834324505
1993-03-01	28.1218560316454
1993-04-01	29.4486039129737
1993-05-01	29.4323617556099
1993-06-01	29.8539728704884
1993-07-01	29.1470094956760
1993-08-01	30.7841011120106
1993-09-01	29.2119842285828
1993-10-01	29.7443813393496
1993-11-01	30.0720379065477
1993-12-01	24.0353898208759
1994-01-01	23.8839897885236
1994-02-01	25.2612814766690
1994-03-01	26.4960161507107
1994-04-01	28.1076770911721
1994-05-01	28.3376021397036
1994-06-01	28.8516675982530
1994-07-01	27.9238605157002
1994-08-01	29.4224050441477
1994-09-01	27.4298748122551
1994-10-01	27.8507383272175
1994-11-01	28.6838430957872
1994-12-01	22.4547581214807
1995-01-01	23.5463055782618
1995-02-01	24.0631834250673
1995-03-01	26.9911035775409
1995-04-01	26.5259540704853
1995-05-01	27.0549540024036
1995-06-01	27.3065936803471
1995-07-01	27.0176815563376
1995-08-01	28.3578546978456
1995-09-01	26.1115682672938
1995-10-01	27.9997268434785
1995-11-01	28.0914182058194
1995-12-01	22.9586073032196
1996-01-01	23.3207336609581
1996-02-01	24.6742588262236
1996-03-01	26.1604529872146
1996-04-01	26.1587788855030
1996-05-01	26.9866439259071
1996-06-01	27.9490955190386
1996-07-01	27.5310147731821
1996-08-01	27.5418292868901
1996-09-01	26.3746077388168
1996-10-01	26.9792333243815
1996-11-01	28.5883532636693
1996-12-01	22.3305393475116
1997-01-01	23.1203119211693
1997-02-01	25.0372053144376
1997-03-01	26.5911410108265
1997-04-01	26.9414558202523
1997-05-01	28.1292932570162
1997-06-01	28.8792788046635
1997-07-01	28.5374862212133
1997-08-01	31.4574211415319
1997-09-01	28.7241588515656
1997-10-01	28.6097232094129
1997-11-01	29.4275656597478
1997-12-01	24.2028352789459
1998-01-01	24.8466519291868
1998-02-01	26.1357111605555
1998-03-01	27.2568517989122
1998-04-01	28.2805695747811
1998-05-01	28.7262991431750
1998-06-01	29.0116218433077
1998-07-01	29.1627520644064
1998-08-01	30.1080260754575
1998-09-01	27.6488720420549
1998-10-01	28.8615890792230
1998-11-01	29.9097069688782
1998-12-01	25.2201338169113
1999-01-01	26.6040711958154
1999-02-01	26.9684068189001
1999-03-01	27.9652306966181
1999-04-01	28.1166266627499
1999-05-01	29.3326562550386
1999-06-01	29.5771346432897
1999-07-01	28.9660661035115
1999-08-01	30.1355192196480
1999-09-01	27.3369525089055
1999-10-01	29.1664017457721
1999-11-01	30.3631758154067
1999-12-01	23.5249440593172
2000-01-01	25.5396521616306
2000-02-01	26.2684846212415
2000-03-01	28.1498166660679
2000-04-01	27.4782143657137
2000-05-01	29.2098827339147
2000-06-01	29.4767570085238
2000-07-01	27.6898154865404
2000-08-01	31.1796947092087
2000-09-01	28.1013497099472
2000-10-01	29.4966968469300
2000-11-01	30.2328434272888
2000-12-01	24.8114068582558
2001-01-01	25.7995846055037
2001-02-01	26.7363914728036
2001-03-01	28.8463976384196
2001-04-01	28.3407730909442
2001-05-01	28.4986389006537
2001-06-01	28.5350110171647
2001-07-01	27.1820071135377
2001-08-01	29.7722098638793
2001-09-01	27.1745131188588
2001-10-01	28.3929649249948
2001-11-01	29.2923834558928
2001-12-01	24.6104444162756
2002-01-01	25.4613950336607
2002-02-01	25.8849916038793
2002-03-01	28.3141514575634
2002-04-01	28.6711494972536
2002-05-01	29.7581420923177
2002-06-01	29.7858029660009
2002-07-01	29.5301743164421
2002-08-01	30.2351073596667
2002-09-01	27.7855527176648
2002-10-01	29.5757815536458
2002-11-01	30.3910597201211
2002-12-01	24.4404082507446
2003-01-01	25.0710878027028
2003-02-01	26.8097513180218
2003-03-01	28.7360701002993
2003-04-01	29.0860378308200
2003-05-01	29.3230001662174
2003-06-01	30.5884537725590
2003-07-01	30.1435057056886
2003-08-01	31.1847497555202
2003-09-01	28.7290655061508
2003-10-01	29.0963997976997
2003-11-01	30.3779146471954
2003-12-01	24.0186163562713
2004-01-01	25.7726199520772
2004-02-01	26.8059022559654
2004-03-01	28.7462442273464
2004-04-01	28.3201618870548
2004-05-01	29.5238027494793
2004-06-01	30.2605618857707
2004-07-01	29.7682325618200
2004-08-01	32.3154359881692
2004-09-01	29.0013419120941
2004-10-01	29.9853332702872
2004-11-01	30.5115043524714
2004-12-01	24.8757473706211
2005-01-01	25.7229973827128
2005-02-01	26.5345479093655
2005-03-01	27.7149399363807
2005-04-01	27.2944916724349
2005-05-01	28.0902385901600
2005-06-01	28.8653399324788
2005-07-01	28.7505277791131
2005-08-01	29.9978100267576
2005-09-01	28.1440308968583
2005-10-01	29.5574963033966
2005-11-01	29.8733770293287
2005-12-01	25.2515310641689
2006-01-01	26.3021636598904
2006-02-01	26.1502235939461
2006-03-01	27.2764463321614
2006-04-01	27.9758008813235
2006-05-01	29.1560263014835
2006-06-01	28.7123055543958
2006-07-01	28.9436314028303
2006-08-01	30.2174832267568
2006-09-01	27.3916003138223
2006-10-01	28.7701682503470
2006-11-01	29.8731183395903
2006-12-01	24.3615473549159
2007-01-01	26.2284226504389
2007-02-01	26.8899468060354
2007-03-01	27.8228421139500
2007-04-01	27.9300330160218
2007-05-01	28.7180290371499
2007-06-01	29.8718831296700
2007-07-01	28.9507997170295
2007-08-01	30.5311782418302
2007-09-01	29.5236436311273
2007-10-01	28.6795680601110
2007-11-01	29.5801148256860
2007-12-01	23.7822015707897
2008-01-01	24.6639752946279
2008-02-01	25.7754921142610
2008-03-01	27.4631485661695
2008-04-01	27.3729529533912
2008-05-01	28.5186220468008
2008-06-01	28.4559324488483
2008-07-01	28.8240002519478
2008-08-01	31.0169043407445
2008-09-01	28.6463529627122
2008-10-01	29.0369719466918
2008-11-01	31.2176295968969
2008-12-01	25.3029280699644
2009-01-01	27.6645083755867
2009-02-01	26.8064687608476
2009-03-01	27.7702016763042
2009-04-01	28.5303360382504
2009-05-01	29.4972834174989
2009-06-01	30.8270873564897
2009-07-01	30.8086899978581
2009-08-01	32.5133524101215
2009-09-01	30.5342534372362
2009-10-01	31.2699294618726
2009-11-01	31.8766317041369
2009-12-01	26.9322507609774
2010-01-01	28.0438894622088
2010-02-01	28.7640994613473
2010-03-01	29.3960416713410
2010-04-01	29.4029180100922
2010-05-01	31.5726696941218
2010-06-01	31.5250093694131
2010-07-01	31.2047865163052
2010-08-01	33.6699962138524
2010-09-01	31.3239462155609
2010-10-01	30.4604788580177
2010-11-01	32.2433526773446
2010-12-01	27.0973885116559
2011-01-01	28.3315646074646
2011-02-01	28.8381292454881
2011-03-01	31.0456773411443
2011-04-01	31.6365988901107
2011-05-01	31.8268094734167
2011-06-01	32.7553404389102
2011-07-01	32.0284064377109
2011-08-01	33.3720796043093
2011-09-01	31.0474374600748
2011-10-01	31.9062346464531
2011-11-01	33.7967426846118
2011-12-01	27.9371196859829
2012-01-01	29.5737386099570
2012-02-01	30.0385301402321
2012-03-01	31.6243082719709
2012-04-01	32.2097046945472
2012-05-01	31.6685835947691
2012-06-01	33.0494621710285
2012-07-01	33.3575547423655
2012-08-01	33.9397740802921
2012-09-01	31.7133775367656
2012-10-01	32.6132159079150
2012-11-01	32.9857061102737
2012-12-01	28.4564155644739
2013-01-01	29.9690747076407
2013-02-01	30.4949653824693
2013-03-01	31.6900347560005
2013-04-01	32.3289923262575
2013-05-01	32.2133204429834
2013-06-01	33.3976919404433
2013-07-01	32.8703151330088
2013-08-01	34.9873713498762
2013-09-01	33.7295386681661
2013-10-01	33.8753572931762
2013-11-01	35.1935191086015
2013-12-01	30.8233640452983
2014-01-01	32.1183660314589
2014-02-01	31.8796767323917
2014-03-01	32.9027875014875
2014-04-01	33.4244465637618
2014-05-01	34.3850259399756
2014-06-01	33.7659331730100
2014-07-01	33.5791833215622
2014-08-01	35.1171126197908
2014-09-01	34.4207311812361
2014-10-01	33.8340961865363
2014-11-01	32.4569779416316
2014-12-01	29.4191208771973
2015-01-01	30.0431580373510
2015-02-01	30.2656995278701
2015-03-01	31.0167175909061
2015-04-01	32.2369958030839
2015-05-01	32.2638863775358
2015-06-01	33.4845317381107
2015-07-01	32.5916179791806
2015-08-01	35.3539653114628
2015-09-01	33.4919246816901
2015-10-01	32.7991578317107
2015-11-01	33.5042114480379
2015-12-01	29.0778866180792
2016-01-01	30.3539677399893
2016-02-01	31.1144054386430
2016-03-01	31.8004866323116
2016-04-01	33.0085621685364
2016-05-01	32.2365543577454
2016-06-01	33.8172906007630
2016-07-01	32.7308757271272
2016-08-01	34.7642592046782
2016-09-01	34.0570233257065
2016-10-01	34.9970672271090
2016-11-01	34.7551133504688
2016-12-01	29.9697805906024
2017-01-01	31.6796937864685
2017-02-01	31.4759526490748
2017-03-01	31.4571008494053
2017-04-01	31.9814872497267
2017-05-01	33.1782676602050
2017-06-01	33.7196628877659
2017-07-01	32.5533909365233
2017-08-01	34.3099134807338
2017-09-01	33.1924573661801
2017-10-01	34.8597377063425
2017-11-01	33.5097430792521
2017-12-01	29.4278686574373
2018-01-01	30.5303546161690
2018-02-01	30.2148922145075
2018-03-01	31.3065072069594
2018-04-01	30.9861210129566
2018-05-01	32.6379871426401
2018-06-01	32.4494777793649
2018-07-01	32.4026430934099
2018-08-01	33.5083813078009
2018-09-01	33.1018781187156