Month	Percent
1978-02-01	91.3934306965524
1978-03-01	91.7461637618223
1978-04-01	91.9142848996598
1978-05-01	91.7927493569110
1978-06-01	91.7612727251359
1978-07-01	91.4735747486079
1978-08-01	91.2733745184860
1978-09-01	91.5298242495744
1978-10-01	91.8472125324349
1978-11-01	91.7494641246922
1978-12-01	91.9643327399126
1979-01-01	90.8673888118667
1979-02-01	91.6088602812216
1979-03-01	92.1312745662570
1979-04-01	92.0599391347432
1979-05-01	91.8183524366441
1979-06-01	92.0076046210406
1979-07-01	91.8502492478916
1979-08-01	91.6728807753182
1979-09-01	92.2133100963175
1979-10-01	92.0471254884533
1979-11-01	91.9100325120221
1979-12-01	91.9018401007466
1980-01-01	90.7175607790825
1980-02-01	91.4059289006300
1980-03-01	91.8386403419684
1980-04-01	91.3984467817180
1980-05-01	91.4584439323411
1980-06-01	91.4316024715091
1980-07-01	91.6156043486376
1980-08-01	91.5225968602212
1980-09-01	92.0198067715147
1980-10-01	92.0187992159549
1980-11-01	91.7450863856632
1980-12-01	92.1043094622439
1981-01-01	91.0485751412065
1981-02-01	91.5316655325129
1981-03-01	91.7737404853604
1981-04-01	91.7092676881257
1981-05-01	91.3484683058799
1981-06-01	91.4862336779441
1981-07-01	91.3931665050349
1981-08-01	91.2090359844691
1981-09-01	91.7042770631206
1981-10-01	90.9312680270466
1981-11-01	91.1013017250891
1981-12-01	91.1937702257390
1982-01-01	90.1211179634589
1982-02-01	90.7689806084228
1982-03-01	91.0119740943300
1982-04-01	90.7181126049036
1982-05-01	90.6815385555728
1982-06-01	90.4281945950983
1982-07-01	90.2410336941898
1982-08-01	89.5803806571849
1982-09-01	89.8671046023526
1982-10-01	89.6827402726869
1982-11-01	88.8951503618624
1982-12-01	88.4368261787442
1983-01-01	87.0244948294596
1983-02-01	87.7673965645923
1983-03-01	87.8006694171900
1983-04-01	87.2991100823342
1983-05-01	87.2151219844962
1983-06-01	87.4011924852544
1983-07-01	87.6023955153919
1983-08-01	87.1541209146040
1983-09-01	88.0116927628215
1983-10-01	87.7243879874399
1983-11-01	87.8817058285062
1983-12-01	88.1681072700105
1984-01-01	86.7323851767316
1984-02-01	87.8189440991944
1984-03-01	88.8326559703456
1984-04-01	88.2647978157980
1984-05-01	88.3052147107899
1984-06-01	88.2609702023286
1984-07-01	88.4052956250156
1984-08-01	87.8098027374667
1984-09-01	88.3168824511157
1984-10-01	88.3936568873420
1984-11-01	88.4081778319096
1984-12-01	88.2835317107176
1985-01-01	87.0275475424566
1985-02-01	88.0525705617328
1985-03-01	88.2388672086768
1985-04-01	87.4995420143666
1985-05-01	87.8422068605031
1985-06-01	87.6398436309363
1985-07-01	88.2240713689478
1985-08-01	88.2282629501992
1985-09-01	88.8183512823126
1985-10-01	88.4633427149016
1985-11-01	89.1736051401667
1985-12-01	88.9675009499291
1986-01-01	87.9256073606820
1986-02-01	88.5280826541359
1986-03-01	89.0245344675177
1986-04-01	88.3920660434551
1986-05-01	88.1286644866760
1986-06-01	88.9274601468688
1986-07-01	88.4384831184125
1986-08-01	88.1468259612291
1986-09-01	88.9690695302452
1986-10-01	88.6570312849264
1986-11-01	88.2094533735085
1986-12-01	88.3846394046410
1987-01-01	87.0960908923740
1987-02-01	87.7474970093862
1987-03-01	88.4554369325118
1987-04-01	87.8888841776174
1987-05-01	87.8510835449794
1987-06-01	88.1333047517542
1987-07-01	88.2379527044958
1987-08-01	88.1502882533316
1987-09-01	88.4325391723184
1987-10-01	88.0342149706500
1987-11-01	87.7292308618078
1987-12-01	88.2681204898436
1988-01-01	87.5647338439144
1988-02-01	88.1531004977742
1988-03-01	88.8583300733714
1988-04-01	88.9135038297526
1988-05-01	88.6979725443094
1988-06-01	88.7173925876525
1988-07-01	88.4669010159315
1988-08-01	87.9811342455273
1988-09-01	88.9484577689075
1988-10-01	88.9464199308521
1988-11-01	89.2380347499722
1988-12-01	88.9339086211212
1989-01-01	87.5767109190475
1989-02-01	88.4744848221648
1989-03-01	88.7928389939599
1989-04-01	89.1138274313741
1989-05-01	89.1753520430828
1989-06-01	88.9742577811477
1989-07-01	89.0648659772350
1989-08-01	88.9914780206085
1989-09-01	89.3952872906655
1989-10-01	89.4650489145297
1989-11-01	89.8452968989793
1989-12-01	89.8110225093085
1990-01-01	88.6051974073618
1990-02-01	89.0089683203950
1990-03-01	89.3192015215314
1990-04-01	89.3064149481210
1990-05-01	89.3928267773832
1990-06-01	89.3053168446602
1990-07-01	89.1226358025857
1990-08-01	88.4856808618154
1990-09-01	88.6608776480642
1990-10-01	88.0673202899615
1990-11-01	87.6260949279227
1990-12-01	87.8796936378900
1991-01-01	86.2449510981113
1991-02-01	86.8185500499840
1991-03-01	86.8248577896809
1991-04-01	86.4482772902335
1991-05-01	86.5209988501977
1991-06-01	86.3351974783641
1991-07-01	85.5851242520634
1991-08-01	85.5194429663296
1991-09-01	86.0849312244469
1991-10-01	85.7814598000912
1991-11-01	85.2461181885432
1991-12-01	85.3711187393957
1992-01-01	84.2245784493830
1992-02-01	84.5431698049088
1992-03-01	84.8974585658944
1992-04-01	84.8253082924544
1992-05-01	84.4935696169225
1992-06-01	84.3780398024339
1992-07-01	84.2801864831958
1992-08-01	83.9999026270811
1992-09-01	84.6550140469936
1992-10-01	84.6045994982590
1992-11-01	83.7768260282921
1992-12-01	84.0683590783154
1993-01-01	82.9532927439404
1993-02-01	83.1795023620182
1993-03-01	84.1322776085125
1993-04-01	83.4262375566701
1993-05-01	83.7111257220370
1993-06-01	83.9961518465161
1993-07-01	84.0119212475979
1993-08-01	83.6388346876212
1993-09-01	84.4445518613507
1993-10-01	84.4225382018888
1993-11-01	83.9778459734591
1993-12-01	84.3165305954409
1994-01-01	82.7198917246672
1994-02-01	83.5057771630341
1994-03-01	83.8618523669668
1994-04-01	84.1973814499745
1994-05-01	84.3873551671108
1994-06-01	84.5779989361897
1994-07-01	85.1523515086223
1994-08-01	84.4108555999716
1994-09-01	85.1693617501804
1994-10-01	84.9113324900072
1994-11-01	84.6882073140871
1994-12-01	85.1671770189177
1995-01-01	83.8900768910516
1995-02-01	84.8469216858210
1995-03-01	85.1628155616240
1995-04-01	85.2379430396186
1995-05-01	85.2019507788252
1995-06-01	85.5359059950506
1995-07-01	85.4698987668561
1995-08-01	85.1825144022110
1995-09-01	86.0977830891054
1995-10-01	85.4189187362661
1995-11-01	85.9456473048854
1995-12-01	86.1302352299435
1996-01-01	84.8901445754768
1996-02-01	85.6260085185816
1996-03-01	85.4212510853852
1996-04-01	85.1941502720219
1996-05-01	85.6141410338714
1996-06-01	85.6322518221300
1996-07-01	85.6838695801529
1996-08-01	85.0307366081056
1996-09-01	85.5300778764066
1996-10-01	85.3129833999173
1996-11-01	85.3757496043082
1996-12-01	85.5268377494365
1997-01-01	84.3667549866292
1997-02-01	84.6608554637294
1997-03-01	85.0570717801011
1997-04-01	84.7536011071689
1997-05-01	84.8304673905400
1997-06-01	85.0444889242402
1997-07-01	85.1934176471188
1997-08-01	84.5868828229207
1997-09-01	85.5984174453962
1997-10-01	85.0809837215422
1997-11-01	85.3208034590389
1997-12-01	85.4735437460794
1998-01-01	84.5023578851207
1998-02-01	84.9284816175118
1998-03-01	84.8393149389143
1998-04-01	85.1381284855986
1998-05-01	85.0072819910725
1998-06-01	84.9898416445653
1998-07-01	85.1958494825336
1998-08-01	84.3375190639289
1998-09-01	85.6605937273678
1998-10-01	85.3906784800561
1998-11-01	85.0919587570815
1998-12-01	85.5898894664902
1999-01-01	84.5294031533788
1999-02-01	85.0681547560909
1999-03-01	85.7287036849541
1999-04-01	85.4178372611835
1999-05-01	85.2381203850611
1999-06-01	85.6767079525212
1999-07-01	85.7240903793910
1999-08-01	85.0341232623740
1999-09-01	85.5949968245487
1999-10-01	85.4130578270936
1999-11-01	85.4252484356766
1999-12-01	85.8181179305381
2000-01-01	84.3048954211419
2000-02-01	85.1544104102864
2000-03-01	85.3841110076404
2000-04-01	85.6676079403903
2000-05-01	85.5106841411706
2000-06-01	85.8944232410370
2000-07-01	86.1376603856782
2000-08-01	85.5629582241484
2000-09-01	86.0559611280752
2000-10-01	85.8093013455040
2000-11-01	85.4897667917116
2000-12-01	85.9894579615846
2001-01-01	84.4764002388131
2001-02-01	85.0910295919326
2001-03-01	85.0499652352852
2001-04-01	85.4158939423454
2001-05-01	85.4275812729542
2001-06-01	85.3737051428046
2001-07-01	85.4175020629336
2001-08-01	84.9424287262870
2001-09-01	85.6130052360534
2001-10-01	85.4933986061374
2001-11-01	85.1125288115553
2001-12-01	85.7532576917157
2002-01-01	84.5632920934791
2002-02-01	85.0048629762010
2002-03-01	85.2737527913671
2002-04-01	85.4419973351548
2002-05-01	85.6902218620467
2002-06-01	85.8686150990282
2002-07-01	85.8452347045576
2002-08-01	85.5940226206691
2002-09-01	85.8777314772098
2002-10-01	85.8386101706386
2002-11-01	86.0256892786915
2002-12-01	86.3217978273279
2003-01-01	85.1616221926654
2003-02-01	85.8169591928318
2003-03-01	85.8557938923586
2003-04-01	85.6055347882439
2003-05-01	85.3569529725718
2003-06-01	85.4600956976214
2003-07-01	85.4919026142748
2003-08-01	85.3714453557806
2003-09-01	86.1749836870552
2003-10-01	86.0699872350260
2003-11-01	85.7971119773294
2003-12-01	86.5633555300070
2004-01-01	85.6579024938106
2004-02-01	85.8459726364505
2004-03-01	86.4202697060512
2004-04-01	86.2888402306194
2004-05-01	86.1835373217666
2004-06-01	86.2203481831836
2004-07-01	86.2026304226436
2004-08-01	85.9055071808476
2004-09-01	86.6699883506101
2004-10-01	86.6417997454749
2004-11-01	86.6623265271605
2004-12-01	87.0939209317151
2005-01-01	85.9492733333647
2005-02-01	86.8566856664085
2005-03-01	86.9962529388991
2005-04-01	87.1262524407269
2005-05-01	86.8847334653599
2005-06-01	87.2128135009906
2005-07-01	87.1679258372348
2005-08-01	86.9042384697991
2005-09-01	87.6344594322548
2005-10-01	87.1801175496534
2005-11-01	86.7785042075050
2005-12-01	87.4523846246159
2006-01-01	86.0207543050820
2006-02-01	86.6315840254019
2006-03-01	87.1676448805303
2006-04-01	87.0741021568704
2006-05-01	87.0413206284917
2006-06-01	87.1616957107438
2006-07-01	87.7776534776828
2006-08-01	87.0131804457035
2006-09-01	87.8530329200770
2006-10-01	87.3092026270560
2006-11-01	87.3563071322481
2006-12-01	88.2443435999923
2007-01-01	86.6531285707735
2007-02-01	87.6412200446056
2007-03-01	87.9116941262267
2007-04-01	87.9063238222181
2007-05-01	88.1971933225080
2007-06-01	88.2186608662524
2007-07-01	88.4099583130280
2007-08-01	88.0519011785516
2007-09-01	88.8892555898749
2007-10-01	88.2452029086428
2007-11-01	88.3062338138174
2007-12-01	88.8130296533364
2008-01-01	88.0317650472521
2008-02-01	88.4620471918860
2008-03-01	88.6632932571139
2008-04-01	88.1237601342828
2008-05-01	88.1572145079634
2008-06-01	88.5146760138205
2008-07-01	88.2871185936052
2008-08-01	87.9081663302961
2008-09-01	88.5995406045407
2008-10-01	88.4937578578361
2008-11-01	88.1104317594789
2008-12-01	88.1332780520456
2009-01-01	86.5262637193727
2009-02-01	86.3943432054053
2009-03-01	86.0197934181814
2009-04-01	86.1935842268631
2009-05-01	86.1664570546763
2009-06-01	85.6654376480754
2009-07-01	86.1820692585651
2009-08-01	85.8328778305373
2009-09-01	86.7529681112918
2009-10-01	86.3845206470700
2009-11-01	86.4235125105462
2009-12-01	86.8013920211934
2010-01-01	86.2934660208091
2010-02-01	86.6939914611520
2010-03-01	86.7842057355206
2010-04-01	86.6920931006631
2010-05-01	86.8198568595834
2010-06-01	87.0264758402298
2010-07-01	86.9655564685530
2010-08-01	87.2026862874585
2010-09-01	87.9282295768758
2010-10-01	87.6184516515039
2010-11-01	87.6538240262329
2010-12-01	88.3637885668259
2011-01-01	87.1899344657301
2011-02-01	87.7161909273033
2011-03-01	87.9194592159642
2011-04-01	87.6474902646640
2011-05-01	87.4693603889286
2011-06-01	87.3920611709365
2011-07-01	87.4090541494863
2011-08-01	86.7883766209785
2011-09-01	87.3400277413278
2011-10-01	87.2013619245145
2011-11-01	87.0740462144159
2011-12-01	87.2223590908634
2012-01-01	86.3732730573930
2012-02-01	86.9330464732878
2012-03-01	86.9587343891404
2012-04-01	86.8985029192003
2012-05-01	86.9721217267179
2012-06-01	86.8033958701785
2012-07-01	86.9033922244738
2012-08-01	86.0937152040188
2012-09-01	86.7262619210089
2012-10-01	86.7026958781433
2012-11-01	86.3141424688003
2012-12-01	86.9123780016372
2013-01-01	85.9153908142491
2013-02-01	86.3941501196855
2013-03-01	86.3871770049939
2013-04-01	86.1682720206750
2013-05-01	86.2986394306077
2013-06-01	86.3463268955038
2013-07-01	86.2561116523197
2013-08-01	85.6460377724294
2013-09-01	86.4294895980634
2013-10-01	85.9634250324062
2013-11-01	85.8882240307462
2013-12-01	85.9977374279887
2014-01-01	84.9241479099010
2014-02-01	86.0265238157300
2014-03-01	85.8762666069656
2014-04-01	86.0053738825991
2014-05-01	86.0119913467326
2014-06-01	85.7883264643853
2014-07-01	85.6356957676432
2014-08-01	85.7247579662597
2014-09-01	85.4409612029258
2014-10-01	85.5426167008526
2014-11-01	85.7727777477681
2014-12-01	86.1058998482199
2015-01-01	85.0768361367941
2015-02-01	86.5297252004522
2015-03-01	86.4388446986036
2015-04-01	86.1743882942641
2015-05-01	86.6180488971409
2015-06-01	86.1095045347373
2015-07-01	86.2833679860930
2015-08-01	85.9505060881212
2015-09-01	85.8925639634262
2015-10-01	86.2069621594620
2015-11-01	86.2889473145667
2015-12-01	86.5641370388164
2016-01-01	85.7080805026471
2016-02-01	86.6829045755911
2016-03-01	86.2663990633375
2016-04-01	86.4835178272491
2016-05-01	86.4612113853766
2016-06-01	86.5682355492368
2016-07-01	86.5959518954420
2016-08-01	86.2459303895948
2016-09-01	86.2387951091210
2016-10-01	86.7550183022183
2016-11-01	86.7764760775502
2016-12-01	86.7944310513328
2017-01-01	85.1415656285075
2017-02-01	86.8676463097948
2017-03-01	86.5481494103672
2017-04-01	86.8487786785174
2017-05-01	86.8622255253498
2017-06-01	86.8216822556568
2017-07-01	86.5021791862112
2017-08-01	86.3081239874799
2017-09-01	86.7067998511602
2017-10-01	86.8850987263468
2017-11-01	87.0577237159263
2017-12-01	87.1574344935268
2018-01-01	85.8340878322342
2018-02-01	87.1010452657465
2018-03-01	86.9430158384905
2018-04-01	87.1452420824724
2018-05-01	87.0157367599480
2018-06-01	86.9320611447183
2018-07-01	86.8029490030154
2018-08-01	86.7666096523139
2018-09-01	87.0536101421915