Month	Percent
1978-02-01	71.9895211610009
1978-03-01	72.1825561932929
1978-04-01	71.0839914034334
1978-05-01	70.8413411179695
1978-06-01	70.2087387278323
1978-07-01	69.7960213198897
1978-08-01	69.4560198846331
1978-09-01	69.0009386342440
1978-10-01	68.0325568521239
1978-11-01	67.6433391017642
1978-12-01	68.3511073320534
1979-01-01	67.1166123582404
1979-02-01	67.3902168065928
1979-03-01	66.8839458292193
1979-04-01	66.9467997757025
1979-05-01	67.0281692477510
1979-06-01	68.0185505465990
1979-07-01	67.9242106659880
1979-08-01	67.4998632038404
1979-09-01	68.2654439137958
1979-10-01	67.8925061585670
1979-11-01	67.3914639619005
1979-12-01	68.0629006408302
1980-01-01	67.1474802740926
1980-02-01	66.9292391808957
1980-03-01	67.6139145481548
1980-04-01	67.3814737767490
1980-05-01	67.8946773485351
1980-06-01	67.0788065669791
1980-07-01	67.0032274561393
1980-08-01	66.6444462512458
1980-09-01	67.6291646452761
1980-10-01	66.1587291153561
1980-11-01	66.2197838702017
1980-12-01	66.2341632493635
1981-01-01	64.6700723930092
1981-02-01	65.6213568090781
1981-03-01	65.8052814131788
1981-04-01	65.4551630079732
1981-05-01	64.7624076533399
1981-06-01	64.9255077088175
1981-07-01	65.6155173344031
1981-08-01	65.3150516157029
1981-09-01	66.0265934036054
1981-10-01	65.7660997830840
1981-11-01	64.8069098443796
1981-12-01	64.2697853756851
1982-01-01	64.2532654872178
1982-02-01	64.3206787559902
1982-03-01	64.8200760416494
1982-04-01	63.1761152496688
1982-05-01	63.8672543491047
1982-06-01	63.5447947898570
1982-07-01	62.9463387085151
1982-08-01	62.5507369800640
1982-09-01	64.4300334721460
1982-10-01	62.6645660164938
1982-11-01	61.2515397602023
1982-12-01	60.8172227640580
1983-01-01	59.3824901690496
1983-02-01	60.3615595700102
1983-03-01	59.5319840025193
1983-04-01	58.9520367891477
1983-05-01	58.6814138356105
1983-06-01	58.0830049851239
1983-07-01	58.6791242692067
1983-08-01	57.7237608443820
1983-09-01	58.9961957006301
1983-10-01	57.7767856040201
1983-11-01	58.1992800489218
1983-12-01	58.9861030547339
1984-01-01	57.1892169271469
1984-02-01	58.6172744819720
1984-03-01	58.8431746346994
1984-04-01	58.5873920671558
1984-05-01	58.3802021085559
1984-06-01	59.3055631990264
1984-07-01	58.5077722067308
1984-08-01	57.2895170398129
1984-09-01	58.6946155897328
1984-10-01	58.0118491945449
1984-11-01	57.7342610652632
1984-12-01	57.5651152268867
1985-01-01	56.1947430187724
1985-02-01	57.1350049353387
1985-03-01	57.2542257754796
1985-04-01	55.8882776211313
1985-05-01	55.5623782152383
1985-06-01	56.1412388195426
1985-07-01	56.0435321958676
1985-08-01	56.0228407234372
1985-09-01	58.0410074426022
1985-10-01	57.7975797492204
1985-11-01	59.5034881595180
1985-12-01	59.0068965840978
1986-01-01	58.1416267361862
1986-02-01	57.8519951374790
1986-03-01	58.5580073028915
1986-04-01	58.9811230386449
1986-05-01	58.2640568565606
1986-06-01	59.1915973570320
1986-07-01	57.7896331485776
1986-08-01	57.3396646706490
1986-09-01	58.2492994401642
1986-10-01	57.8090118344391
1986-11-01	58.0201348071641
1986-12-01	57.7326982474474
1987-01-01	55.8395279992934
1987-02-01	57.2347892602821
1987-03-01	58.7459167170582
1987-04-01	57.7866192164682
1987-05-01	57.2999981536735
1987-06-01	57.3417606686669
1987-07-01	57.0161391195960
1987-08-01	56.3381489538432
1987-09-01	56.9304210992009
1987-10-01	57.4732509509320
1987-11-01	56.5974335033452
1987-12-01	57.8577061090171
1988-01-01	56.9209401085225
1988-02-01	57.6585409965621
1988-03-01	58.3200703203000
1988-04-01	58.2797122478011
1988-05-01	56.9920750101044
1988-06-01	57.8910389316626
1988-07-01	57.4853432795396
1988-08-01	56.3346097698437
1988-09-01	57.5711380483874
1988-10-01	56.8087341313670
1988-11-01	57.8879249061805
1988-12-01	57.2323341185450
1989-01-01	56.1671091633826
1989-02-01	57.9054574810518
1989-03-01	58.5029611098909
1989-04-01	59.0963500542749
1989-05-01	58.8581278469874
1989-06-01	58.9117159310122
1989-07-01	58.6218705872633
1989-08-01	58.8771111613073
1989-09-01	60.4529823159799
1989-10-01	59.3051069892918
1989-11-01	60.2259721352184
1989-12-01	58.8013567189482
1990-01-01	57.0412806472058
1990-02-01	57.5462470412884
1990-03-01	58.2573591360849
1990-04-01	57.9529147234325
1990-05-01	58.4586683543005
1990-06-01	58.7343646012656
1990-07-01	59.1563659351332
1990-08-01	59.2307834540562
1990-09-01	60.2225085332498
1990-10-01	59.9520907992517
1990-11-01	59.5146656492788
1990-12-01	59.1525720358668
1991-01-01	57.0839912985700
1991-02-01	58.0192979364386
1991-03-01	56.7040653003007
1991-04-01	56.2973097954915
1991-05-01	56.0264717910900
1991-06-01	56.1330792476204
1991-07-01	54.3424873319154
1991-08-01	54.1960389330863
1991-09-01	55.3033330972612
1991-10-01	54.5949384997032
1991-11-01	55.5156665536949
1991-12-01	55.3352065709749
1992-01-01	54.3332560420515
1992-02-01	55.2932325864472
1992-03-01	54.8131730949655
1992-04-01	54.3805948734681
1992-05-01	54.2856970937550
1992-06-01	55.5580697436762
1992-07-01	54.7629100403319
1992-08-01	54.0819714217043
1992-09-01	54.4455209016266
1992-10-01	54.6075788733942
1992-11-01	52.3405006671404
1992-12-01	52.6027954511881
1993-01-01	51.5710575556817
1993-02-01	51.0605152678215
1993-03-01	52.5329081646460
1993-04-01	51.7556803281904
1993-05-01	52.3198746383278
1993-06-01	51.9510606752750
1993-07-01	51.6524088987085
1993-08-01	50.5843368990380
1993-09-01	52.7144011504901
1993-10-01	52.6319173486463
1993-11-01	52.8294738294607
1993-12-01	53.1543121556474
1994-01-01	52.3406883880220
1994-02-01	53.1545037873701
1994-03-01	54.4090378109252
1994-04-01	54.6982890590006
1994-05-01	55.1037386234948
1994-06-01	54.3596036803407
1994-07-01	54.2539546317441
1994-08-01	54.0089694996706
1994-09-01	55.1852070965632
1994-10-01	54.6559383475610
1994-11-01	54.8239713762446
1994-12-01	55.0026804385686
1995-01-01	54.2457871081603
1995-02-01	55.4708728128572
1995-03-01	56.0959101028544
1995-04-01	56.3757995815235
1995-05-01	55.8387249717610
1995-06-01	55.0386787609941
1995-07-01	55.6629157514376
1995-08-01	55.4762163775204
1995-09-01	56.8552881008488
1995-10-01	55.8317579520271
1995-11-01	56.1028292593992
1995-12-01	55.7765033924696
1996-01-01	54.1914795530671
1996-02-01	54.3980776309447
1996-03-01	55.1999155833567
1996-04-01	54.9358655910616
1996-05-01	55.2714687724840
1996-06-01	55.7463099553802
1996-07-01	55.2736676297993
1996-08-01	53.8853386631422
1996-09-01	55.5048555773166
1996-10-01	55.2813165877131
1996-11-01	54.9902815337434
1996-12-01	55.6495272583855
1997-01-01	54.5917333648460
1997-02-01	55.4932719071393
1997-03-01	55.7781324143719
1997-04-01	55.9066511709933
1997-05-01	54.9501786173171
1997-06-01	55.3718969604729
1997-07-01	54.9011326100842
1997-08-01	54.3248427344155
1997-09-01	56.0029710526448
1997-10-01	55.3912422032548
1997-11-01	56.2251457770662
1997-12-01	56.2191012141419
1998-01-01	54.7981278112293
1998-02-01	54.4974580071346
1998-03-01	55.9015164957233
1998-04-01	56.2159466337683
1998-05-01	56.4237889326267
1998-06-01	57.0439933421631
1998-07-01	56.1023388956192
1998-08-01	55.9249818932536
1998-09-01	58.1350908715883
1998-10-01	56.1960766127667
1998-11-01	56.3184176623289
1998-12-01	56.4435395344200
1999-01-01	55.4111825794201
1999-02-01	55.5694402715224
1999-03-01	55.4841132980900
1999-04-01	56.0988092208631
1999-05-01	55.6026418018244
1999-06-01	56.9796644459003
1999-07-01	56.9615288096068
1999-08-01	57.3781073054980
1999-09-01	57.3016005913952
1999-10-01	57.3037594074935
1999-11-01	57.3520017317180
1999-12-01	57.0726594286980
2000-01-01	55.5520955321184
2000-02-01	56.4593012443703
2000-03-01	56.7955647075072
2000-04-01	57.1950522652840
2000-05-01	57.7642480353167
2000-06-01	57.7475458800853
2000-07-01	57.8175727608642
2000-08-01	58.1968205243915
2000-09-01	59.1018519620898
2000-10-01	58.4159656771065
2000-11-01	58.2020012137865
2000-12-01	58.0256030435235
2001-01-01	56.3894178613508
2001-02-01	56.8921449003873
2001-03-01	57.0096663638797
2001-04-01	57.4017681568614
2001-05-01	57.1064461642432
2001-06-01	57.1499527803220
2001-07-01	56.7506262875444
2001-08-01	56.4132810260897
2001-09-01	57.9930935504223
2001-10-01	57.6766867632685
2001-11-01	57.5481718332926
2001-12-01	57.8637820485673
2002-01-01	56.6070154284973
2002-02-01	58.3558496233027
2002-03-01	58.6574339267000
2002-04-01	59.1299547434090
2002-05-01	58.8963985531280
2002-06-01	59.4503806275524
2002-07-01	58.2446482383631
2002-08-01	57.9552461078157
2002-09-01	59.7486096621545
2002-10-01	58.8505338552265
2002-11-01	59.6460676142336
2002-12-01	60.1134708749383
2003-01-01	59.1939631078196
2003-02-01	60.5661145585300
2003-03-01	61.0304529062198
2003-04-01	60.6735562865934
2003-05-01	60.7670425355306
2003-06-01	60.7158283287933
2003-07-01	60.6720100248453
2003-08-01	60.7208708700741
2003-09-01	61.4483323910208
2003-10-01	60.9197365246415
2003-11-01	61.0100734008203
2003-12-01	61.6869617379082
2004-01-01	59.8412000255510
2004-02-01	61.3765336574370
2004-03-01	61.8971887751126
2004-04-01	61.6434583047497
2004-05-01	62.4952968045268
2004-06-01	63.2245812103795
2004-07-01	62.6760862462190
2004-08-01	61.8272270834757
2004-09-01	63.1062576655189
2004-10-01	62.9914156555470
2004-11-01	62.2413609768531
2004-12-01	62.2367122601746
2005-01-01	61.2577115615274
2005-02-01	62.0492851517171
2005-03-01	63.5364746628356
2005-04-01	63.9916746015490
2005-05-01	63.8478467606342
2005-06-01	64.1647861775240
2005-07-01	64.1900176448737
2005-08-01	63.9902005979512
2005-09-01	64.3822152163314
2005-10-01	64.6020535336359
2005-11-01	64.4056039833113
2005-12-01	64.5717878742789
2006-01-01	62.7595602569903
2006-02-01	64.3091216926633
2006-03-01	65.2903168009361
2006-04-01	65.0008778167759
2006-05-01	64.6234074520576
2006-06-01	64.6882043905442
2006-07-01	65.2032181177192
2006-08-01	65.4380972668639
2006-09-01	66.1154483567596
2006-10-01	65.5979932207407
2006-11-01	64.7639735491878
2006-12-01	65.0149498051767
2007-01-01	63.9290210046720
2007-02-01	64.7702402007596
2007-03-01	66.0132659705712
2007-04-01	65.9319471553106
2007-05-01	66.0250691072875
2007-06-01	66.9461898401863
2007-07-01	65.9691167304243
2007-08-01	66.1866134737401
2007-09-01	66.9231898845885
2007-10-01	65.4857366439849
2007-11-01	65.5754827926381
2007-12-01	65.1874130636250
2008-01-01	63.7313612096237
2008-02-01	63.8359925832118
2008-03-01	64.7900987484805
2008-04-01	65.4444620492309
2008-05-01	66.0180223059160
2008-06-01	66.5513492176829
2008-07-01	65.5983965253144
2008-08-01	66.1593825961072
2008-09-01	67.0029542202968
2008-10-01	65.5247667054532
2008-11-01	66.0660483563724
2008-12-01	66.1701731230133
2009-01-01	64.8685329623160
2009-02-01	67.0274603693211
2009-03-01	66.9380487478647
2009-04-01	67.0532096888243
2009-05-01	66.2026354479009
2009-06-01	67.1466314625212
2009-07-01	66.6037629397931
2009-08-01	67.1204838544705
2009-09-01	66.8282509136415
2009-10-01	66.5310918567933
2009-11-01	66.7560319481902
2009-12-01	67.6454755963434
2010-01-01	66.1085392210757
2010-02-01	67.5201518070027
2010-03-01	67.6133228688937
2010-04-01	68.3758883262239
2010-05-01	68.1287703442209
2010-06-01	68.6305043524369
2010-07-01	69.0644330168903
2010-08-01	68.5152139440876
2010-09-01	69.7412165547130
2010-10-01	69.0464819941284
2010-11-01	69.8539747808109
2010-12-01	70.1748405148471
2011-01-01	68.5343864776147
2011-02-01	69.3009060414377
2011-03-01	70.2330552340840
2011-04-01	69.3338630323976
2011-05-01	69.4414077588855
2011-06-01	69.4400071769169
2011-07-01	68.8140073657649
2011-08-01	68.2440505167323
2011-09-01	69.2483843064760
2011-10-01	68.4249118021130
2011-11-01	68.7548446967946
2011-12-01	68.6413506004548
2012-01-01	67.3260803038924
2012-02-01	67.8698310909365
2012-03-01	68.8384242078910
2012-04-01	69.6275480013746
2012-05-01	69.4740850708156
2012-06-01	69.1577567493800
2012-07-01	69.7147400874606
2012-08-01	68.5725028574808
2012-09-01	69.1014719947399
2012-10-01	69.7041500557772
2012-11-01	69.5739885580827
2012-12-01	69.9674914900060
2013-01-01	67.6733607596846
2013-02-01	69.2721898971348
2013-03-01	69.2356718621504
2013-04-01	70.0295046528706
2013-05-01	69.5768642623335
2013-06-01	68.9332462735107
2013-07-01	69.0309966299580
2013-08-01	68.5780860648596
2013-09-01	69.2152549709620
2013-10-01	69.0845133196015
2013-11-01	68.4253231983653
2013-12-01	68.6760868064201
2014-01-01	67.3941801839325
2014-02-01	68.7264437172875
2014-03-01	69.2133351696472
2014-04-01	69.4058102585966
2014-05-01	68.8484512041366
2014-06-01	69.3059585722420
2014-07-01	70.2069804197424
2014-08-01	69.6406947579691
2014-09-01	69.2697892429620
2014-10-01	69.4257896277386
2014-11-01	68.6095832818448
2014-12-01	68.5478940317805
2015-01-01	67.4973647560761
2015-02-01	68.8317932873068
2015-03-01	69.4762638673622
2015-04-01	69.8330686793640
2015-05-01	69.8207078111476
2015-06-01	69.8659265679533
2015-07-01	69.4902790546006
2015-08-01	68.7650024405421
2015-09-01	68.7667380522860
2015-10-01	69.3183645136217
2015-11-01	69.8147369127895
2015-12-01	69.6903423270177
2016-01-01	68.4680168338334
2016-02-01	69.5842733227355
2016-03-01	69.2679266047732
2016-04-01	68.9145470713664
2016-05-01	69.1659986899338
2016-06-01	68.8390176715062
2016-07-01	67.7338737147650
2016-08-01	67.7460553230204
2016-09-01	67.0133590786393
2016-10-01	67.9533581391614
2016-11-01	68.5499800153056
2016-12-01	68.4925174696446
2017-01-01	67.1334125979698
2017-02-01	68.5526460327789
2017-03-01	68.7699823404867
2017-04-01	69.4433115490310
2017-05-01	69.7928873539418
2017-06-01	69.4300277588562
2017-07-01	69.8124539361073
2017-08-01	69.7517774065603
2017-09-01	70.1077124668564
2017-10-01	70.2152662519570
2017-11-01	71.1074120929114
2017-12-01	70.8016841893797
2018-01-01	69.8228389879520
2018-02-01	70.5399166491370
2018-03-01	69.7273053339980
2018-04-01	68.5972977133650
2018-05-01	69.4866506495590
2018-06-01	69.8293159771451
2018-07-01	69.5827967553124
2018-08-01	69.7522065476721
2018-09-01	69.7837022904268