Month	Percent
1978-02-01	21.7643439810745
1978-03-01	22.2099757778567
1978-04-01	22.6067792186698
1978-05-01	22.7621698458578
1978-06-01	22.2960279694651
1978-07-01	22.7135728230572
1978-08-01	22.5821980319391
1978-09-01	21.6600434604911
1978-10-01	22.3549139214456
1978-11-01	21.7284213844935
1978-12-01	21.5420524110983
1979-01-01	20.9074838366777
1979-02-01	21.7626207811346
1979-03-01	21.5429606625318
1979-04-01	21.1720972112657
1979-05-01	21.0804358131879
1979-06-01	21.1416493183094
1979-07-01	20.8824261309221
1979-08-01	20.2565840769872
1979-09-01	20.8263083862806
1979-10-01	20.5592388154879
1979-11-01	20.9692809728432
1979-12-01	20.4551026491570
1980-01-01	19.9973508472615
1980-02-01	20.9499713084040
1980-03-01	21.6502946055151
1980-04-01	21.4683865950563
1980-05-01	22.2692086298986
1980-06-01	21.8198387605883
1980-07-01	22.6188331175582
1980-08-01	21.9905314312684
1980-09-01	23.2256749626371
1980-10-01	21.9100407956535
1980-11-01	22.1333639540487
1980-12-01	21.8660094772741
1981-01-01	20.7788230229858
1981-02-01	20.9130787942282
1981-03-01	20.8836057496337
1981-04-01	20.8337239305137
1981-05-01	20.9058448473715
1981-06-01	20.4721333209884
1981-07-01	21.3915713847496
1981-08-01	21.4751365919041
1981-09-01	22.2079096737725
1981-10-01	21.8940328863304
1981-11-01	21.3490951048380
1981-12-01	21.3689472701261
1982-01-01	19.8392892874624
1982-02-01	20.2987172875931
1982-03-01	21.0085765854427
1982-04-01	20.3634369721779
1982-05-01	19.4758431435374
1982-06-01	19.6488516382715
1982-07-01	18.7711095426621
1982-08-01	18.2582925755153
1982-09-01	19.6579161813412
1982-10-01	21.2047409619029
1982-11-01	20.3883055075576
1982-12-01	20.7458493104123
1983-01-01	19.9901271028981
1983-02-01	21.1574600570311
1983-03-01	21.9708742002903
1983-04-01	20.6228328987964
1983-05-01	20.0708426759782
1983-06-01	20.2477872677555
1983-07-01	20.6231518647230
1983-08-01	20.4829594627080
1983-09-01	21.1250283996692
1983-10-01	20.2912284319006
1983-11-01	20.1234133479546
1983-12-01	21.1432305266033
1984-01-01	19.5113641460818
1984-02-01	21.2428269948252
1984-03-01	21.3714216293605
1984-04-01	20.8602439145355
1984-05-01	20.3748323507145
1984-06-01	20.8224120757176
1984-07-01	20.7509963649601
1984-08-01	19.7566155940272
1984-09-01	20.8292006811604
1984-10-01	20.4935072037365
1984-11-01	20.9183751362283
1984-12-01	21.0405109641765
1985-01-01	19.7111537677937
1985-02-01	20.1631722771655
1985-03-01	20.8248527250585
1985-04-01	19.4964355080509
1985-05-01	19.5707768384423
1985-06-01	20.4644124943892
1985-07-01	20.2854991614268
1985-08-01	19.2198854180342
1985-09-01	20.9557019441902
1985-10-01	20.5948158809225
1985-11-01	20.6290675303536
1985-12-01	20.1673607378269
1986-01-01	19.9012484936483
1986-02-01	21.0089042991691
1986-03-01	21.9177494499645
1986-04-01	22.0232634878504
1986-05-01	21.9470835703836
1986-06-01	21.0732594235385
1986-07-01	20.9913672554100
1986-08-01	20.7172289077296
1986-09-01	21.7671008404623
1986-10-01	21.2401001637739
1986-11-01	22.2663281811082
1986-12-01	21.8972863038518
1987-01-01	21.2048649953028
1987-02-01	21.8650173619284
1987-03-01	23.6990344242602
1987-04-01	22.2176828784038
1987-05-01	23.1531895995362
1987-06-01	22.4292313796495
1987-07-01	22.5767429171342
1987-08-01	21.7501457357732
1987-09-01	22.4075465912217
1987-10-01	22.1351737935374
1987-11-01	21.6122247814874
1987-12-01	21.6441766928592
1988-01-01	20.9564323419233
1988-02-01	21.1713755711678
1988-03-01	23.3283020188488
1988-04-01	22.4072583006553
1988-05-01	22.9180310282282
1988-06-01	22.7363569034531
1988-07-01	22.2479666721401
1988-08-01	22.8436511159645
1988-09-01	23.6135136085169
1988-10-01	23.2089513664954
1988-11-01	23.6593304056571
1988-12-01	24.2342994175523
1989-01-01	22.4618964661894
1989-02-01	23.6554023556672
1989-03-01	24.4341388218444
1989-04-01	23.4010728118956
1989-05-01	24.7617019823839
1989-06-01	23.7654137088842
1989-07-01	23.0159804467720
1989-08-01	22.6845838948931
1989-09-01	24.4308172143721
1989-10-01	23.3734146078886
1989-11-01	23.9420079746999
1989-12-01	23.4731930105655
1990-01-01	22.1693027040828
1990-02-01	23.3135642099960
1990-03-01	23.5776217117228
1990-04-01	23.9469834830651
1990-05-01	24.5031474375113
1990-06-01	24.8055885527465
1990-07-01	25.6102574105378
1990-08-01	24.9247096567102
1990-09-01	26.6364655928227
1990-10-01	25.9816661014076
1990-11-01	26.8318640482816
1990-12-01	25.8306108433235
1991-01-01	24.3980957042680
1991-02-01	25.5126267930669
1991-03-01	25.3424708787986
1991-04-01	25.3784638743058
1991-05-01	25.8397001848138
1991-06-01	25.5531740534976
1991-07-01	24.0812610536309
1991-08-01	24.9149172753529
1991-09-01	26.1549842125973
1991-10-01	25.7703105691369
1991-11-01	25.6671611769042
1991-12-01	25.8403863966675
1992-01-01	24.4134512702319
1992-02-01	25.1100577760071
1992-03-01	25.1982044870031
1992-04-01	25.6882901111233
1992-05-01	25.2215623499148
1992-06-01	25.3125187323433
1992-07-01	25.8513257326050
1992-08-01	24.5660064647835
1992-09-01	26.3290160140525
1992-10-01	25.2262406963318
1992-11-01	25.4385624489506
1992-12-01	24.7882170822052
1993-01-01	24.7115181672647
1993-02-01	25.1384512785393
1993-03-01	26.3051672050848
1993-04-01	25.2864341755292
1993-05-01	25.8977672029352
1993-06-01	25.7156165938377
1993-07-01	26.5135060282795
1993-08-01	25.7942262359096
1993-09-01	27.7292806042957
1993-10-01	27.3347148029153
1993-11-01	27.5678239350582
1993-12-01	26.5171635116218
1994-01-01	25.5036765824097
1994-02-01	27.0947674339860
1994-03-01	27.9947822309201
1994-04-01	27.9247959241637
1994-05-01	28.1269022437695
1994-06-01	27.6221420833964
1994-07-01	28.0159002183247
1994-08-01	26.6588471306326
1994-09-01	29.1758939683882
1994-10-01	27.7411353943846
1994-11-01	28.0571664455850
1994-12-01	28.1507080626256
1995-01-01	25.7055521574435
1995-02-01	27.5735530895003
1995-03-01	27.9283848579175
1995-04-01	28.5788745517988
1995-05-01	28.3564274921545
1995-06-01	28.7781178133308
1995-07-01	28.1814459421271
1995-08-01	27.8399960723957
1995-09-01	29.6680701502422
1995-10-01	29.0986546771379
1995-11-01	30.2345020149607
1995-12-01	30.1312373438423
1996-01-01	29.3132683552073
1996-02-01	30.7200787089460
1996-03-01	31.7856257250819
1996-04-01	30.4403432425200
1996-05-01	30.7318689819259
1996-06-01	31.2631154827926
1996-07-01	30.5389386541467
1996-08-01	31.1665696285231
1996-09-01	31.6835964707158
1996-10-01	30.8883423935356
1996-11-01	30.8441773743489
1996-12-01	30.6962374589749
1997-01-01	29.4890444902667
1997-02-01	30.8060925221767
1997-03-01	32.3514340340965
1997-04-01	31.6281833101605
1997-05-01	30.9624633054667
1997-06-01	31.5656607476372
1997-07-01	31.1514439786293
1997-08-01	30.6438806029156
1997-09-01	32.3692119538592
1997-10-01	29.8632261082975
1997-11-01	31.8741398194081
1997-12-01	31.5853250098587
1998-01-01	29.8966194586018
1998-02-01	31.3566051411132
1998-03-01	31.8782852424429
1998-04-01	32.3270488709320
1998-05-01	32.7164622962997
1998-06-01	32.9405549114914
1998-07-01	33.3981837384882
1998-08-01	32.2899700381592
1998-09-01	33.5758965819067
1998-10-01	32.0595228712504
1998-11-01	32.5514808295820
1998-12-01	32.3833579664686
1999-01-01	30.8086676561196
1999-02-01	30.7995090871923
1999-03-01	31.7563531541105
1999-04-01	32.1047603031315
1999-05-01	31.3915595352359
1999-06-01	32.0183866957913
1999-07-01	32.1699019088589
1999-08-01	31.6538408717380
1999-09-01	34.7022463910468
1999-10-01	33.1610365686527
1999-11-01	34.2585563472307
1999-12-01	33.7886552387418
2000-01-01	33.2477039823674
2000-02-01	34.1153539134315
2000-03-01	35.1978122884027
2000-04-01	35.8581716110472
2000-05-01	35.6338316660886
2000-06-01	35.7596577118340
2000-07-01	35.9123119304766
2000-08-01	35.9929831034059
2000-09-01	36.0393878217468
2000-10-01	35.7628864190819
2000-11-01	35.0231931625021
2000-12-01	35.4568621545124
2001-01-01	33.5584766460237
2001-02-01	35.7652152759843
2001-03-01	36.4474845387019
2001-04-01	37.3037672110312
2001-05-01	37.4163914825818
2001-06-01	37.8687171921383
2001-07-01	36.9908563758598
2001-08-01	36.8204442199961
2001-09-01	38.5031291881592
2001-10-01	38.1299016735509
2001-11-01	38.1611796410053
2001-12-01	38.2084637148663
2002-01-01	37.5092169212458
2002-02-01	39.3842730444132
2002-03-01	39.3211166722207
2002-04-01	38.8791121311936
2002-05-01	38.8631867819957
2002-06-01	38.8511669109970
2002-07-01	38.3409305291869
2002-08-01	38.6513583477427
2002-09-01	39.6186255053404
2002-10-01	39.5343729501812
2002-11-01	39.6420630750374
2002-12-01	40.0678493478236
2003-01-01	38.8250718896714
2003-02-01	40.1973591612979
2003-03-01	40.6919906661606
2003-04-01	40.2402974304894
2003-05-01	41.8853282267199
2003-06-01	41.6956722274074
2003-07-01	40.9924449885848
2003-08-01	40.5609039323106
2003-09-01	41.7028753738784
2003-10-01	41.0353097705580
2003-11-01	41.0063460413402
2003-12-01	40.9690200774296
2004-01-01	39.0973861634528
2004-02-01	40.7984407371157
2004-03-01	41.7008248518942
2004-04-01	41.3605067649120
2004-05-01	42.4895729540129
2004-06-01	42.7408911178388
2004-07-01	42.9860430819656
2004-08-01	42.7397478249590
2004-09-01	44.6471588497575
2004-10-01	43.7002980958697
2004-11-01	43.5744030653964
2004-12-01	43.0947055217746
2005-01-01	42.9990365901441
2005-02-01	42.8119287912559
2005-03-01	44.1984669110753
2005-04-01	43.7963834792874
2005-05-01	43.6165399004294
2005-06-01	44.5243441662069
2005-07-01	44.6746048574238
2005-08-01	44.3996737503935
2005-09-01	45.8371872437660
2005-10-01	45.3754147468608
2005-11-01	45.3082415985883
2005-12-01	45.1731350924233
2006-01-01	44.1221670161654
2006-02-01	45.8497742938872
2006-03-01	47.2845547393183
2006-04-01	46.4094308562414
2006-05-01	47.3099903569543
2006-06-01	47.4627904249195
2006-07-01	47.0723465846749
2006-08-01	47.6569446383232
2006-09-01	49.0943184658980
2006-10-01	48.2000653809418
2006-11-01	47.7692369539237
2006-12-01	48.3719149627173
2007-01-01	47.2079910440399
2007-02-01	47.7459142669584
2007-03-01	48.1642097141072
2007-04-01	48.2550271950610
2007-05-01	49.1187989588552
2007-06-01	48.7714313361134
2007-07-01	48.6979166954486
2007-08-01	48.5280356881472
2007-09-01	49.1921462008590
2007-10-01	48.5591284049824
2007-11-01	49.1354574371092
2007-12-01	49.2605360161665
2008-01-01	48.4162197281025
2008-02-01	49.2705060519922
2008-03-01	48.6030760234708
2008-04-01	49.5353385443401
2008-05-01	49.9147541454106
2008-06-01	50.2659105767943
2008-07-01	50.1824124690708
2008-08-01	50.5851023516678
2008-09-01	51.8897210785373
2008-10-01	50.9657150879976
2008-11-01	51.1437507097253
2008-12-01	50.2821663817664
2009-01-01	50.6187571329674
2009-02-01	52.6761645728498
2009-03-01	52.7760151810289
2009-04-01	52.0862181162258
2009-05-01	53.6126247423978
2009-06-01	53.3008548202231
2009-07-01	52.7690288684637
2009-08-01	51.8944364408639
2009-09-01	52.9253294193385
2009-10-01	53.1074623974835
2009-11-01	54.1681308247489
2009-12-01	54.5352616989568
2010-01-01	52.4538044010409
2010-02-01	53.6537565020392
2010-03-01	54.3204454771798
2010-04-01	53.9183443278461
2010-05-01	53.4436119912298
2010-06-01	53.6688796628995
2010-07-01	53.7991220793409
2010-08-01	54.0712618006844
2010-09-01	55.3572789951500
2010-10-01	55.2836305825453
2010-11-01	54.8638066112046
2010-12-01	54.8851146924852
2011-01-01	52.7744051917099
2011-02-01	53.9474642518472
2011-03-01	54.6608344069398
2011-04-01	54.1466936038742
2011-05-01	54.5267726295031
2011-06-01	55.7831568883243
2011-07-01	55.5503365739391
2011-08-01	56.0333606892451
2011-09-01	55.9348634390259
2011-10-01	55.4636123611735
2011-11-01	55.1848576348944
2011-12-01	55.6725592231513
2012-01-01	54.3212922754311
2012-02-01	55.0152980126339
2012-03-01	55.8673690003541
2012-04-01	55.8544221913149
2012-05-01	55.8186047735765
2012-06-01	55.7590221803199
2012-07-01	55.8553102622654
2012-08-01	55.6229485091833
2012-09-01	56.9042867976938
2012-10-01	56.0320402029988
2012-11-01	55.4874871741179
2012-12-01	55.3835570530793
2013-01-01	53.8513636452996
2013-02-01	56.2121065743067
2013-03-01	56.2009591989780
2013-04-01	56.7100917579606
2013-05-01	56.3710056644775
2013-06-01	56.4580427309663
2013-07-01	54.8734593734795
2013-08-01	55.9480255575156
2013-09-01	56.3109397541839
2013-10-01	55.3327842424098
2013-11-01	55.7042568215675
2013-12-01	55.4876681809890
2014-01-01	53.5884126579917
2014-02-01	55.7984190687460
2014-03-01	56.1385628508856
2014-04-01	55.7362623744879
2014-05-01	56.4375305550145
2014-06-01	57.0769227049454
2014-07-01	57.0011926085345
2014-08-01	57.3161394469275
2014-09-01	56.0777073341305
2014-10-01	56.1057085394033
2014-11-01	56.1002471453573
2014-12-01	56.6550320494203
2015-01-01	55.3103530540853
2015-02-01	56.7777964444682
2015-03-01	55.9664561630377
2015-04-01	56.3498058292339
2015-05-01	57.1124256640876
2015-06-01	57.0006635710846
2015-07-01	57.5165757393554
2015-08-01	56.7252398019186
2015-09-01	57.5458304878014
2015-10-01	59.1235130226268
2015-11-01	59.0683695583260
2015-12-01	58.6827618637222
2016-01-01	57.7342163973018
2016-02-01	59.0190315438387
2016-03-01	59.3983511183662
2016-04-01	59.0248403345674
2016-05-01	59.0672773647426
2016-06-01	58.8777247700997
2016-07-01	58.5052753434591
2016-08-01	58.6988950928787
2016-09-01	58.4735153191057
2016-10-01	58.5629313128899
2016-11-01	59.2606809383432
2016-12-01	59.2683696408783
2017-01-01	58.4179756528555
2017-02-01	59.6439086503577
2017-03-01	59.9443095070415
2017-04-01	59.7657423165136
2017-05-01	60.9729132585820
2017-06-01	61.1222343332321
2017-07-01	59.9188408561850
2017-08-01	60.5334238616218
2017-09-01	60.3602324141746
2017-10-01	59.9978903142202
2017-11-01	60.5672435823381
2017-12-01	59.8705295657124
2018-01-01	57.9047210639171
2018-02-01	60.4667684103284
2018-03-01	59.9225838043684
2018-04-01	59.7792937920760
2018-05-01	60.6680149137168
2018-06-01	60.8592691452499
2018-07-01	60.5874702141770
2018-08-01	61.4196188190797
2018-09-01	60.8687872532168