Month	Percent
1978-01-01	18.5836385836386
1978-02-01	18.1729360039082
1978-03-01	17.4804687500000
1978-04-01	16.9797511588192
1978-05-01	16.4516914091020
1978-06-01	16.6180048661800
1978-07-01	16.8979790601412
1978-08-01	17.2908560311284
1978-09-01	17.4441205053450
1978-10-01	17.6085374727140
1978-11-01	17.4060606060606
1978-12-01	17.8181818181818
1979-01-01	18.6879690147664
1979-02-01	18.6485831920562
1979-03-01	17.9598743050520
1979-04-01	17.1539019086736
1979-05-01	16.7832167832168
1979-06-01	16.3732818905233
1979-07-01	16.4017341040462
1979-08-01	16.9511901899495
1979-09-01	17.7713736791547
1979-10-01	17.5581674262413
1979-11-01	17.4904030710173
1979-12-01	17.8768272226216
1980-01-01	18.8083273510409
1980-02-01	18.9008363201912
1980-03-01	17.9885332059245
1980-04-01	17.3518164435946
1980-05-01	17.4058178350024
1980-06-01	16.9326030007145
1980-07-01	16.9761904761905
1980-08-01	17.4316290130797
1980-09-01	17.6484560570071
1980-10-01	17.5159990519080
1980-11-01	17.5592417061611
1980-12-01	17.9104477611940
1981-01-01	18.5298983691799
1981-02-01	18.3364839319471
1981-03-01	17.4118760350130
1981-04-01	16.9820245979186
1981-05-01	17.2136953955136
1981-06-01	16.9375736160188
1981-07-01	17.2007540056550
1981-08-01	17.5417942076760
1981-09-01	17.7730696798493
1981-10-01	17.9058823529412
1981-11-01	18.1433607520564
1981-12-01	18.5926100258884
1982-01-01	19.2199248120301
1982-02-01	18.8014101057579
1982-03-01	17.8848413631022
1982-04-01	16.9953051643192
1982-05-01	17.1154296417701
1982-06-01	17.4807197943445
1982-07-01	17.6278309596078
1982-08-01	17.8171641791045
1982-09-01	17.9762182326883
1982-10-01	17.8787878787879
1982-11-01	17.9236499068901
1982-12-01	18.0591110076798
1983-01-01	18.4797768479777
1983-02-01	18.5873605947955
1983-03-01	18.0868353842582
1983-04-01	17.3781902552204
1983-05-01	16.9562195969423
1983-06-01	16.8248090719741
1983-07-01	17.2294172062905
1983-08-01	17.6402678365274
1983-09-01	17.8818643285648
1983-10-01	17.9534454943535
1983-11-01	18.0290122035459
1983-12-01	18.4767602393005
1984-01-01	19.0804597701149
1984-02-01	18.9568014705882
1984-03-01	18.4717760440569
1984-04-01	17.7711534051823
1984-05-01	17.6322418136020
1984-06-01	17.5663311985361
1984-07-01	17.9698216735254
1984-08-01	18.0593607305936
1984-09-01	17.9931584948689
1984-10-01	18.2999088422972
1984-11-01	18.3557276246869
1984-12-01	18.8481675392670
1985-01-01	19.4501249715974
1985-02-01	19.6501590186279
1985-03-01	19.0422151611439
1985-04-01	18.2498299705282
1985-05-01	18.2209144409235
1985-06-01	18.3175033921303
1985-07-01	18.3461364663353
1985-08-01	18.7542315504401
1985-09-01	18.7373167981962
1985-10-01	18.8105429150710
1985-11-01	19.0144014401440
1985-12-01	19.4738025635260
1986-01-01	19.8787061994609
1986-02-01	20.2469135802469
1986-03-01	19.5559542498318
1986-04-01	18.5118780815778
1986-05-01	18.4704830053667
1986-06-01	18.6955550591914
1986-07-01	18.5044642857143
1986-08-01	18.5911725367811
1986-09-01	18.9490091293699
1986-10-01	19.1058718861210
1986-11-01	19.3290379915574
1986-12-01	19.7689915593070
1987-01-01	20.3107658157603
1987-02-01	20.5105438401776
1987-03-01	19.8094393972967
1987-04-01	19.0254706533776
1987-05-01	18.8896261888963
1987-06-01	18.8425005522421
1987-07-01	18.8920768042375
1987-08-01	18.8009698038351
1987-09-01	19.2248403435367
1987-10-01	19.3534198372553
1987-11-01	19.6354052273226
1987-12-01	20.0789993416722
1988-01-01	20.7183530442400
1988-02-01	20.7712532865907
1988-03-01	20.0438116100767
1988-04-01	19.2383453709783
1988-05-01	19.0913062472696
1988-06-01	18.8905874645119
1988-07-01	18.9707806367205
1988-08-01	19.1595906814718
1988-09-01	19.7434224831485
1988-10-01	19.8435122799391
1988-11-01	19.7482638888889
1988-12-01	20.1431049436253
1989-01-01	21.0309724929608
1989-02-01	20.8450704225352
1989-03-01	20.1600692191218
1989-04-01	19.2731992212849
1989-05-01	19.1195511437203
1989-06-01	19.0383786114705
1989-07-01	19.0260719672484
1989-08-01	19.4103722831935
1989-09-01	19.8194325021496
1989-10-01	19.7724345212538
1989-11-01	19.6011151619129
1989-12-01	19.8370147973408
1990-01-01	20.8654670094259
1990-02-01	20.6726649528706
1990-03-01	19.9786096256684
1990-04-01	19.3196405648267
1990-05-01	18.8260405549626
1990-06-01	18.9460209088969
1990-07-01	18.9592663680955
1990-08-01	19.5101171458999
1990-09-01	19.1448627951500
1990-10-01	18.8310308182784
1990-11-01	19.3500424808836
1990-12-01	19.5753715498938
1991-01-01	20.2290076335878
1991-02-01	20.2249575551783
1991-03-01	19.1656077933079
1991-04-01	18.8994708994709
1991-05-01	18.6390532544379
1991-06-01	18.4332770270270
1991-07-01	18.6021959459459
1991-08-01	18.8317165752847
1991-09-01	18.7026116259478
1991-10-01	18.9012839402231
1991-11-01	18.9524610854018
1991-12-01	19.0997055111485
1992-01-01	19.5748263523469
1992-02-01	19.4105263157895
1992-03-01	19.1287878787879
1992-04-01	18.6183656276327
1992-05-01	18.4570107210427
1992-06-01	18.7618048268625
1992-07-01	18.4431389005455
1992-08-01	18.6163522012579
1992-09-01	18.8272251308901
1992-10-01	18.5014650481373
1992-11-01	18.5239389504495
1992-12-01	18.9121338912134
1993-01-01	19.8077726702883
1993-02-01	19.5779356456331
1993-03-01	19.1609267376331
1993-04-01	18.6352253756260
1993-05-01	18.2652210175146
1993-06-01	18.4205042717233
1993-07-01	18.3010618363523
1993-08-01	18.5978780944456
1993-09-01	18.6694386694387
1993-10-01	18.3575883575884
1993-11-01	18.5423588039867
1993-12-01	18.9497716894977
1994-01-01	19.8837691988377
1994-02-01	19.7966383067026
1994-03-01	19.4110327664869
1994-04-01	18.8252386882524
1994-05-01	18.4134217067109
1994-06-01	18.5959826050942
1994-07-01	18.5338579416028
1994-08-01	18.4940008274721
1994-09-01	18.7435420541434
1994-10-01	18.9669421487603
1994-11-01	19.2355371900826
1994-12-01	19.3928128872367
1995-01-01	20.2476780185758
1995-02-01	20.2766880033037
1995-03-01	19.5297999587544
1995-04-01	19.0790832128846
1995-05-01	18.9896907216495
1995-06-01	18.7474248042851
1995-07-01	18.3841714756801
1995-08-01	18.5826122785332
1995-09-01	18.5055578427336
1995-10-01	18.6960098724805
1995-11-01	19.1366906474820
1995-12-01	19.4815881505863
1996-01-01	20.0945140743785
1996-02-01	20.0904791281102
1996-03-01	19.5187165775401
1996-04-01	18.8399835458659
1996-05-01	18.6858316221766
1996-06-01	18.3459880976811
1996-07-01	18.2060755336617
1996-08-01	18.3141919606235
1996-09-01	18.5207949190740
1996-10-01	18.6603850880787
1996-11-01	18.9393939393939
1996-12-01	18.9471528062270
1997-01-01	19.4042032238319
1997-02-01	19.5669934640523
1997-03-01	18.8941032442359
1997-04-01	18.5011231366143
1997-05-01	18.1039755351682
1997-06-01	18.0855397148676
1997-07-01	18.3133020981870
1997-08-01	18.5667752442997
1997-09-01	18.8732967256457
1997-10-01	18.8732967256457
1997-11-01	19.2112217930474
1997-12-01	19.2472024415056
1998-01-01	19.7154471544715
1998-02-01	20.0488003253355
1998-03-01	19.4032880048711
1998-04-01	19.0002032107295
1998-05-01	18.5456022750356
1998-06-01	18.4493606657195
1998-07-01	18.8349908666531
1998-08-01	19.0099411645364
1998-09-01	19.1403081914031
1998-10-01	19.1403081914031
1998-11-01	19.3515704154002
1998-12-01	19.4038929440389
1999-01-01	19.6638315107331
1999-02-01	20.0527169505272
1999-03-01	19.7363083164300
1999-04-01	19.3469884404786
1999-05-01	18.8209076175040
1999-06-01	18.8488042156465
1999-07-01	19.2019445007089
1999-08-01	19.1739218465276
1999-09-01	19.0813435855929
1999-10-01	19.1459218781623
1999-11-01	19.4658033184945
1999-12-01	19.6883852691218
2000-01-01	20.2388180530257
2000-02-01	20.4816838696620
2000-03-01	20.0242964162786
2000-04-01	19.6960486322188
2000-05-01	19.2510121457490
2000-06-01	19.4377022653722
2000-07-01	19.7205912127961
2000-08-01	19.5344129554656
2000-09-01	19.4416346348371
2000-10-01	19.2961165048544
2000-11-01	19.3691872219976
2000-12-01	19.8179979777553
2001-01-01	20.6715210355987
2001-02-01	20.7497467071935
2001-03-01	20.1457784976716
2001-04-01	19.7730956239870
2001-05-01	19.6518923294880
2001-06-01	19.9635553755821
2001-07-01	20.0000000000000
2001-08-01	19.7570850202429
2001-09-01	20.2751922298665
2001-10-01	20.3681229773463
2001-11-01	20.3153426318981
2001-12-01	20.7077856420627
2002-01-01	21.4040056645762
2002-02-01	21.4473950942631
2002-03-01	20.7176160551389
2002-04-01	20.5518360722256
2002-05-01	20.6323469801378
2002-06-01	20.5834683954619
2002-07-01	20.4743563754308
2002-08-01	20.2513683356984
2002-09-01	20.6882591093117
2002-10-01	20.6519538368091
2002-11-01	21.0867802108678
2002-12-01	21.3517353359042
2003-01-01	21.7982545159326
2003-02-01	21.9626168224299
2003-03-01	21.2576064908722
2003-04-01	20.9425147267926
2003-05-01	20.5601786076720
2003-06-01	20.5959862152848
2003-07-01	20.9736308316430
2003-08-01	21.0269941140654
2003-09-01	21.1604787989450
2003-10-01	21.2502537040796
2003-11-01	21.2096610513497
2003-12-01	21.4634146341463
2004-01-01	22.1522842639594
2004-02-01	22.2945484133442
2004-03-01	21.9963407196585
2004-04-01	21.3211382113821
2004-05-01	21.1425086399675
2004-06-01	21.3238289205703
2004-07-01	21.2627291242363
2004-08-01	21.2016293279022
2004-09-01	21.6320716320716
2004-10-01	21.5522509676105
2004-11-01	21.5594462540717
2004-12-01	21.7922606924644
2005-01-01	22.1361598043212
2005-02-01	22.4352437283296
2005-03-01	22.0044907123903
2005-04-01	21.5570085819371
2005-05-01	21.2974296205630
2005-06-01	21.2944058799510
2005-07-01	21.3148223764802
2005-08-01	21.4096016343207
2005-09-01	20.9881584320131
2005-10-01	20.8741830065359
2005-11-01	21.4592274678112
2005-12-01	21.8520032706460
2006-01-01	22.0585226110088
2006-02-01	22.1835313396149
2006-03-01	21.6404172632440
2006-04-01	21.2879409351928
2006-05-01	20.9016393442623
2006-06-01	20.9297562973582
2006-07-01	21.2046711739398
2006-08-01	21.0990362928030
2006-09-01	20.9879073580652
2006-10-01	20.8811475409836
2006-11-01	21.4593154334905
2006-12-01	21.8051282051282
2007-01-01	22.0286885245902
2007-02-01	21.6615384615385
2007-03-01	21.2233169129721
2007-04-01	20.6981519507187
2007-05-01	20.5338809034908
2007-06-01	20.5997124666256
2007-07-01	20.9445585215606
2007-08-01	21.0147904683648
2007-09-01	20.8504519309778
2007-10-01	20.8136429011712
2007-11-01	21.2171052631579
2007-12-01	21.6371863430687
2008-01-01	21.7740275776909
2008-02-01	21.5447991761071
2008-03-01	21.5007215007215
2008-04-01	20.8952145214521
2008-05-01	20.3547123118169
2008-06-01	20.9527737677872
2008-07-01	21.3696369636964
2008-08-01	20.7757375696307
2008-09-01	21.0852073447493
2008-10-01	21.0732714138287
2008-11-01	21.2515489467162
2008-12-01	21.5540400909279
2009-01-01	21.8821096173733
2009-02-01	22.0244255847651
2009-03-01	21.7598343685300
2009-04-01	21.1845102505695
2009-05-01	21.0068365444375
2009-06-01	21.5869069815620
2009-07-01	21.7202072538860
2009-08-01	21.5633423180593
2009-09-01	21.6462782500518
2009-10-01	21.6715055993364
2009-11-01	22.0792695579996
2009-12-01	22.3421926910299
2010-01-01	22.1575556017460
2010-02-01	22.4511027881814
2010-03-01	21.7155944201541
2010-04-01	21.4047519799917
2010-05-01	21.5208333333333
2010-06-01	21.4211294019587
2010-07-01	21.7336945196916
2010-08-01	21.7427558890974
2010-09-01	21.4925995413800
2010-10-01	21.7609013144169
2010-11-01	22.0830724274682
2010-12-01	22.1595655806182
2011-01-01	22.1734587251829
2011-02-01	22.2222222222222
2011-03-01	22.1541155866900
2011-04-01	21.5286903197547
2011-05-01	21.5020801401358
2011-06-01	21.7915024091108
2011-07-01	22.0858895705521
2011-08-01	22.2563652326602
2011-09-01	22.2245540398741
2011-10-01	22.2245540398741
2011-11-01	22.1499055217300
2011-12-01	22.2899159663866
2012-01-01	22.5490196078431
2012-02-01	22.5725621215285
2012-03-01	22.5031341412453
2012-04-01	22.1200083629521
2012-05-01	22.1640853913771
2012-06-01	21.8501465048137
2012-07-01	22.2849968612680
2012-08-01	22.3059217409500
2012-09-01	22.1175978238125
2012-10-01	21.9338635412306
2012-11-01	22.3408710217755
2012-12-01	22.9092433452106
2013-01-01	22.6347807845605
2013-02-01	22.6537896283855
2013-03-01	22.5840336134454
2013-04-01	22.0517132646626
2013-05-01	21.8441503885738
2013-06-01	21.7528373266078
2013-07-01	22.1264971632696
2013-08-01	21.9466050031532
2013-09-01	22.0004202563564
2013-10-01	22.0844715276319
2013-11-01	22.1357998738701
2013-12-01	22.7502102607233
2014-01-01	22.7645697454239
2014-02-01	22.6784586228680
2014-03-01	22.1707060063224
2014-04-01	21.9224283305228
2014-05-01	21.6603455541509
2014-06-01	21.7702845100105
2014-07-01	22.0653319283456
2014-08-01	21.8381112984823
2014-09-01	21.7867678044669
2014-10-01	22.0910623946037
2014-11-01	22.4963103520978
2014-12-01	22.4847078675385
2015-01-01	22.2550675675676
2015-02-01	22.1940393151554
2015-03-01	22.2551301036598
2015-04-01	22.2339750370214
2015-05-01	21.9212865002116
2015-06-01	21.7262534376983
2015-07-01	22.0482437579348
2015-08-01	21.9140376879102
2015-09-01	21.4300825047599
2015-10-01	21.6553767993226
2015-11-01	22.0457433290978
2015-12-01	21.9279661016949
2016-01-01	21.9677692960136
2016-02-01	22.1159974506055
2016-03-01	22.3544411389715
2016-04-01	21.6244950031895
2016-05-01	21.1567084839464
2016-06-01	21.2630236019562
2016-07-01	21.6078264568269
2016-08-01	21.3540557802853
2016-09-01	21.0649627263046
2016-10-01	21.0223642172524
2016-11-01	21.3463996591393
2016-12-01	21.1727078891258
2017-01-01	21.4437819420784
2017-02-01	21.9876306248667
2017-03-01	22.0443875373453
2017-04-01	21.4865442118753
2017-05-01	20.8795900939368
2017-06-01	20.9436379163108
2017-07-01	21.1234515164460
2017-08-01	20.9356975005341
2017-09-01	20.8030756087142
2017-10-01	20.8502456740013
2017-11-01	21.2743211460338
2017-12-01	21.2802397773496
2018-01-01	21.0965945598629
2018-02-01	21.1192109777015
2018-03-01	20.9012875536481
2018-04-01	20.2920334979601
2018-05-01	19.9012451696007
2018-06-01	19.9699699699700
2018-07-01	20.3608247422680
2018-08-01	20.0945626477541
2018-09-01	20.0257842715943