Month	Percent
1978-02-01	33.4384637295149
1978-03-01	34.9617098089808
1978-04-01	35.9248997634896
1978-05-01	36.6457712290389
1978-06-01	37.0790660176848
1978-07-01	36.7021436468119
1978-08-01	37.9374431382074
1978-09-01	37.9024073361259
1978-10-01	38.4503011440760
1978-11-01	38.3165346102313
1978-12-01	33.2830552630942
1979-01-01	34.8431405808420
1979-02-01	34.8850234046488
1979-03-01	35.6716847115863
1979-04-01	36.3311065520532
1979-05-01	36.7286050167787
1979-06-01	37.1055688060919
1979-07-01	37.3926892543351
1979-08-01	38.0697826430831
1979-09-01	36.1831839639208
1979-10-01	37.4853075438289
1979-11-01	36.6897750179297
1979-12-01	32.4435618582141
1980-01-01	33.5675942452110
1980-02-01	33.4847497595447
1980-03-01	33.6704180378641
1980-04-01	34.3085614232774
1980-05-01	33.8293707952464
1980-06-01	34.2446297551819
1980-07-01	34.4229128896417
1980-08-01	34.8956864979871
1980-09-01	33.2059746434357
1980-10-01	34.7260187813812
1980-11-01	34.8831419367050
1980-12-01	30.6576412098299
1981-01-01	32.9204411051828
1981-02-01	33.1882098151118
1981-03-01	33.5345650781189
1981-04-01	34.1781848632023
1981-05-01	34.8540344557250
1981-06-01	35.3487092916716
1981-07-01	34.9927492662999
1981-08-01	36.0767301850490
1981-09-01	34.3146104784311
1981-10-01	36.3961220790787
1981-11-01	36.4400978299065
1981-12-01	31.5480564700556
1982-01-01	32.6970551534814
1982-02-01	32.7336113271357
1982-03-01	33.1955763894296
1982-04-01	34.4143506148817
1982-05-01	34.1356574831943
1982-06-01	35.8113142888253
1982-07-01	35.8664862669186
1982-08-01	36.8187384563977
1982-09-01	35.9765063734591
1982-10-01	35.7893402172393
1982-11-01	36.2507711330271
1982-12-01	31.7910810119695
1983-01-01	33.1647402461194
1983-02-01	33.4701222122135
1983-03-01	34.2682354589342
1983-04-01	34.5059367042448
1983-05-01	33.9194889319786
1983-06-01	35.1288404354298
1983-07-01	35.1261912594131
1983-08-01	35.8856539828284
1983-09-01	33.9742912824163
1983-10-01	34.9018251167899
1983-11-01	34.5211786711205
1983-12-01	30.6723200009276
1984-01-01	32.0106467732680
1984-02-01	32.6122796831524
1984-03-01	32.0624111600019
1984-04-01	32.4927844264073
1984-05-01	33.4412086262970
1984-06-01	34.5863563791488
1984-07-01	35.0529790342927
1984-08-01	36.0828030699243
1984-09-01	34.3277826261814
1984-10-01	36.0696167093267
1984-11-01	35.5056911282591
1984-12-01	31.7382572826793
1985-01-01	32.6152563112196
1985-02-01	31.9198769875575
1985-03-01	32.5934710546206
1985-04-01	33.9430399950652
1985-05-01	33.1455195692227
1985-06-01	34.0513970743512
1985-07-01	34.3028986215925
1985-08-01	35.0329558436562
1985-09-01	32.6876172739852
1985-10-01	34.8350838428686
1985-11-01	33.8790749965461
1985-12-01	29.9404391517754
1986-01-01	31.1303967445423
1986-02-01	30.7877491106334
1986-03-01	31.1263147555264
1986-04-01	30.9663269087508
1986-05-01	32.1077968641658
1986-06-01	32.8631456680484
1986-07-01	33.1664649176297
1986-08-01	34.4542148347075
1986-09-01	32.1190969327628
1986-10-01	33.3573865888220
1986-11-01	33.4064927405320
1986-12-01	28.7224803497367
1987-01-01	30.3816387728158
1987-02-01	30.4938938184726
1987-03-01	30.6007580815496
1987-04-01	31.5102882765065
1987-05-01	33.1743364346054
1987-06-01	33.8677199822532
1987-07-01	32.4909133368999
1987-08-01	35.6242902649893
1987-09-01	33.7010268017553
1987-10-01	33.4415287108678
1987-11-01	33.7561960251742
1987-12-01	28.8476979023761
1988-01-01	30.1227108684335
1988-02-01	31.6181332499481
1988-03-01	30.7868377427673
1988-04-01	31.4372158044954
1988-05-01	33.3839750577200
1988-06-01	34.0767125183995
1988-07-01	34.8689788248887
1988-08-01	34.3929676241106
1988-09-01	33.2646126261217
1988-10-01	34.3261912869387
1988-11-01	34.6499669010832
1988-12-01	29.1934428892724
1989-01-01	29.3285081808965
1989-02-01	29.3027976597569
1989-03-01	31.1584577231598
1989-04-01	31.4642998141996
1989-05-01	31.2731430217788
1989-06-01	32.3717748328068
1989-07-01	31.6782154847828
1989-08-01	32.9507489413410
1989-09-01	31.7281090112347
1989-10-01	32.1275698883792
1989-11-01	33.3988041773220
1989-12-01	28.6782313568219
1990-01-01	28.5873930451622
1990-02-01	29.7717007638662
1990-03-01	31.1721578665075
1990-04-01	31.1779543481006
1990-05-01	31.3816682577638
1990-06-01	32.4859223716224
1990-07-01	30.5736868628978
1990-08-01	32.2900069160755
1990-09-01	32.0939929522094
1990-10-01	32.9904337559874
1990-11-01	33.4824539877371
1990-12-01	27.7270287779143
1991-01-01	29.9780633807480
1991-02-01	31.6923074246967
1991-03-01	32.2220095145778
1991-04-01	31.9433084543593
1991-05-01	33.5217582147268
1991-06-01	35.4211408706736
1991-07-01	34.8290418147597
1991-08-01	35.3569309185675
1991-09-01	33.5880259051752
1991-10-01	35.4244793616670
1991-11-01	36.0713695494186
1991-12-01	29.7007702689260
1992-01-01	31.5709139326990
1992-02-01	32.3251332013260
1992-03-01	33.4951525656905
1992-04-01	33.8586147344464
1992-05-01	34.3257780735820
1992-06-01	34.7950796209932
1992-07-01	33.9317357131867
1992-08-01	34.9146006427788
1992-09-01	33.4533003695132
1992-10-01	34.1799360247767
1992-11-01	35.8866252665194
1992-12-01	29.4461224093593
1993-01-01	30.4372130314216
1993-02-01	32.4031152947848
1993-03-01	33.8827183959062
1993-04-01	35.4253620370080
1993-05-01	35.5984889846170
1993-06-01	35.8334959931322
1993-07-01	36.0628135839449
1993-08-01	36.6759569993497
1993-09-01	34.3474469711905
1993-10-01	35.2264611273336
1993-11-01	35.3369477966591
1993-12-01	30.1173558933655
1994-01-01	29.7019523122062
1994-02-01	30.8823292839601
1994-03-01	31.1282571163029
1994-04-01	32.0822386168163
1994-05-01	33.2695477856252
1994-06-01	33.3326706552633
1994-07-01	31.9614499031695
1994-08-01	34.1947123857181
1994-09-01	31.5490669170112
1994-10-01	33.0590461737498
1994-11-01	33.0474333885441
1994-12-01	28.0899726010114
1995-01-01	29.2641204707963
1995-02-01	28.8141144565456
1995-03-01	29.3331003154910
1995-04-01	30.2876702056275
1995-05-01	30.9279003849135
1995-06-01	31.4075831543308
1995-07-01	31.8023104439374
1995-08-01	32.4961364710042
1995-09-01	30.7774189406981
1995-10-01	31.3822267239240
1995-11-01	31.3744164121539
1995-12-01	27.4700978923330
1996-01-01	27.5608838159980
1996-02-01	29.6622506024428
1996-03-01	30.4415327906749
1996-04-01	29.9794304693931
1996-05-01	30.3827105421698
1996-06-01	31.7985416540191
1996-07-01	30.3234978751150
1996-08-01	32.4105971178133
1996-09-01	31.1612498970377
1996-10-01	31.6704013898060
1996-11-01	33.4940686418509
1996-12-01	27.3543099939497
1997-01-01	29.2862739715626
1997-02-01	30.7436729843865
1997-03-01	31.0936705819810
1997-04-01	32.3996229417672
1997-05-01	32.6680767736899
1997-06-01	34.1219045486813
1997-07-01	33.7432969477302
1997-08-01	35.3266712138154
1997-09-01	33.2086375234176
1997-10-01	33.8320146691306
1997-11-01	33.7823805830876
1997-12-01	29.6174689825133
1998-01-01	29.6322677366291
1998-02-01	31.7074598714978
1998-03-01	32.6786474888087
1998-04-01	32.7476582372468
1998-05-01	33.5146049629420
1998-06-01	33.5678087399384
1998-07-01	33.3887438841139
1998-08-01	35.1740121082346
1998-09-01	31.6698662619494
1998-10-01	32.9237521375413
1998-11-01	33.0251987378215
1998-12-01	28.7028265174711
1999-01-01	29.8286147551989
1999-02-01	30.5848345793766
1999-03-01	31.0890357588810
1999-04-01	31.5415158755585
1999-05-01	32.6839742185186
1999-06-01	33.7517863886069
1999-07-01	33.2668824728583
1999-08-01	34.7382306784218
1999-09-01	32.1075646872310
1999-10-01	32.5085519603246
1999-11-01	33.4609891338859
1999-12-01	28.8386974925036
2000-01-01	30.7771575124508
2000-02-01	30.8462847851961
2000-03-01	30.9275494990383
2000-04-01	31.7782783014790
2000-05-01	31.5061436133621
2000-06-01	32.9937759381786
2000-07-01	31.9868607787841
2000-08-01	32.6773651797224
2000-09-01	31.2730081012813
2000-10-01	32.6304139054555
2000-11-01	33.0324227293205
2000-12-01	28.1274708896061
2001-01-01	29.6555810991376
2001-02-01	29.8737346724452
2001-03-01	30.5031994415333
2001-04-01	30.8385190030979
2001-05-01	30.4299163117254
2001-06-01	31.5183978051019
2001-07-01	31.9336049151594
2001-08-01	32.7847267971833
2001-09-01	31.8513433232589
2001-10-01	31.9664616342158
2001-11-01	32.4076725217589
2001-12-01	27.4476481642126
2002-01-01	29.0058475332940
2002-02-01	30.2729018807270
2002-03-01	32.0570850669745
2002-04-01	33.0539994527272
2002-05-01	32.9613002602926
2002-06-01	33.2287430440245
2002-07-01	33.6933302251711
2002-08-01	33.6282716504400
2002-09-01	31.0521561717222
2002-10-01	32.0235867296370
2002-11-01	32.4143507143036
2002-12-01	27.9275221490508
2003-01-01	28.2439780696965
2003-02-01	28.8902395809452
2003-03-01	30.4891442511594
2003-04-01	31.3772889534335
2003-05-01	31.8321842754603
2003-06-01	32.6680431043510
2003-07-01	32.1989529013259
2003-08-01	33.4561308446328
2003-09-01	31.7731722358634
2003-10-01	31.6839193058067
2003-11-01	31.8842032635032
2003-12-01	27.3849516174474
2004-01-01	28.5558700182213
2004-02-01	29.3732970142717
2004-03-01	29.8703503292829
2004-04-01	30.3297609167104
2004-05-01	31.4005430943859
2004-06-01	32.2815795795304
2004-07-01	32.1635084762124
2004-08-01	34.0847633126882
2004-09-01	31.6422011908692
2004-10-01	32.1435288260966
2004-11-01	32.6991582000543
2004-12-01	26.5559984192876
2005-01-01	28.5652831866950
2005-02-01	29.1492809563232
2005-03-01	29.7989567773274
2005-04-01	30.1622327689282
2005-05-01	30.9768791485097
2005-06-01	31.2824529297932
2005-07-01	31.1971135579120
2005-08-01	32.5817707851326
2005-09-01	30.7385924202423
2005-10-01	31.6045027386547
2005-11-01	31.7791407463678
2005-12-01	27.3538686726348
2006-01-01	28.2366866261819
2006-02-01	29.3473494709808
2006-03-01	30.7866730289492
2006-04-01	30.6755460292454
2006-05-01	31.4104962802415
2006-06-01	31.2088670252521
2006-07-01	30.7806110558722
2006-08-01	31.9590102963652
2006-09-01	30.6862918619808
2006-10-01	31.8446070827177
2006-11-01	32.2997100154055
2006-12-01	26.9233757365340
2007-01-01	28.4500508424433
2007-02-01	28.9489904455587
2007-03-01	30.5314104488459
2007-04-01	30.0439186723132
2007-05-01	30.3842282047834
2007-06-01	31.9661653160133
2007-07-01	31.8564633158139
2007-08-01	32.2465729593778
2007-09-01	30.1730592333564
2007-10-01	30.7231250557585
2007-11-01	31.5164716400524
2007-12-01	26.8771891422370
2008-01-01	27.4491536834249
2008-02-01	29.6569117852990
2008-03-01	29.9796376085876
2008-04-01	29.1722476300153
2008-05-01	30.5251535129509
2008-06-01	30.9198350464799
2008-07-01	30.4898796448737
2008-08-01	32.9445328307274
2008-09-01	31.3151761244509
2008-10-01	31.8923692475874
2008-11-01	33.0445865373865
2008-12-01	28.8871089433992
2009-01-01	30.1787264766144
2009-02-01	30.7433683943768
2009-03-01	30.5599150819394
2009-04-01	31.8955921447834
2009-05-01	33.2238116641199
2009-06-01	33.6887566551004
2009-07-01	33.9637568752820
2009-08-01	35.1578191961995
2009-09-01	33.0638883280204
2009-10-01	32.6538308031177
2009-11-01	33.2229341982156
2009-12-01	28.8630813215853
2010-01-01	30.5071310779253
2010-02-01	31.0049679399755
2010-03-01	31.7109881093146
2010-04-01	32.6968554658929
2010-05-01	33.1875282872185
2010-06-01	34.1449393642838
2010-07-01	33.4885819721994
2010-08-01	35.0655795822725
2010-09-01	34.0892885631160
2010-10-01	33.8669164953374
2010-11-01	34.3092070005103
2010-12-01	29.6426126159408
2011-01-01	30.1910780965185
2011-02-01	30.2428174935569
2011-03-01	31.1884294557943
2011-04-01	32.4213873071948
2011-05-01	32.7721245543926
2011-06-01	33.7400168930691
2011-07-01	33.9646085045176
2011-08-01	34.4730557561220
2011-09-01	32.3149689011702
2011-10-01	32.8668253737232
2011-11-01	34.0564545008560
2011-12-01	32.1066173060459
2012-01-01	31.0203833254400
2012-02-01	31.2507589874051
2012-03-01	31.8063081090302
2012-04-01	33.1350929285637
2012-05-01	31.9984149692630
2012-06-01	33.3935151495052
2012-07-01	34.0375624402496
2012-08-01	36.7578345169684
2012-09-01	34.2011223042410
2012-10-01	34.3853966164246
2012-11-01	35.9558936155731
2012-12-01	30.6504100181581
2013-01-01	31.0153149338270
2013-02-01	32.7944632056186
2013-03-01	33.5051595411380
2013-04-01	33.2904503279559
2013-05-01	34.4301870778601
2013-06-01	35.0248485330616
2013-07-01	34.1367486733125
2013-08-01	35.3028287890334
2013-09-01	33.6067184988702
2013-10-01	34.1494179062338
2013-11-01	35.1883929990689
2013-12-01	32.3801964166463
2014-01-01	31.4733499282248
2014-02-01	32.9047684994663
2014-03-01	33.0146605933812
2014-04-01	33.8480368653371
2014-05-01	33.7045212131895
2014-06-01	35.0259154555169
2014-07-01	34.4070760276654
2014-08-01	34.9738555180467
2014-09-01	34.9949862473498
2014-10-01	34.4658649349533
2014-11-01	35.0522727050573
2014-12-01	31.1131624168424
2015-01-01	32.4738452610639
2015-02-01	32.1963430097197
2015-03-01	33.2350297801197
2015-04-01	33.1513093157682
2015-05-01	33.9062193195574
2015-06-01	33.8107352487011
2015-07-01	32.7447102054440
2015-08-01	35.0782164905658
2015-09-01	34.7756781366289
2015-10-01	34.2801533369583
2015-11-01	33.4843776366863
2015-12-01	30.1814160957649
2016-01-01	32.3758699126679
2016-02-01	31.9943531379748
2016-03-01	33.5808588591881
2016-04-01	32.6967126217840
2016-05-01	33.6288412195338
2016-06-01	32.9696523984372
2016-07-01	33.7733772528078
2016-08-01	35.7130248516870
2016-09-01	35.2243647552706
2016-10-01	34.9837159400085
2016-11-01	35.0167441311398
2016-12-01	31.7116881657524
2017-01-01	31.5634510544692
2017-02-01	33.2864327574909
2017-03-01	33.8661888201266
2017-04-01	34.7645739682353
2017-05-01	34.7407513062106
2017-06-01	34.6685123468527
2017-07-01	34.4165795828774
2017-08-01	34.6848205317705
2017-09-01	33.5866420490678
2017-10-01	34.1044240887286
2017-11-01	33.9293554260673
2017-12-01	30.2984757070545
2018-01-01	30.5065946431873
2018-02-01	30.5021395354163
2018-03-01	32.0353931310039
2018-04-01	32.5888489945926
2018-05-01	31.9637605614743
2018-06-01	32.6426792084621
2018-07-01	33.7957481277041
2018-08-01	34.1025128521045
2018-09-01	34.0602784688176