Month	Percent
1968-01-01	49.5345557122708
1968-02-01	48.9014084507042
1968-03-01	51.8153672952435
1968-04-01	54.8622821810006
1968-05-01	56.4325842696629
1968-06-01	56.1413348289400
1968-07-01	55.3096105351639
1968-08-01	55.1231802911534
1968-09-01	54.5861297539150
1968-10-01	54.4109436069235
1968-11-01	53.6680613668061
1968-12-01	51.0739191073919
1969-01-01	48.9557226399332
1969-02-01	49.2624547731700
1969-03-01	51.8899388549194
1969-04-01	54.0833333333333
1969-05-01	55.5802332037757
1969-06-01	55.3244592346090
1969-07-01	54.5731707317073
1969-08-01	54.1228555617045
1969-09-01	54.5907079646018
1969-10-01	54.2115437724386
1969-11-01	52.8145695364238
1969-12-01	50.6618863761721
1970-01-01	48.9531680440771
1970-02-01	49.4357280484448
1970-03-01	51.9109155897718
1970-04-01	54.0236198846471
1970-05-01	55.2841065056272
1970-06-01	55.3879901288730
1970-07-01	54.9616228070175
1970-08-01	53.7619699042408
1970-09-01	54.2099507927830
1970-10-01	53.8776624795194
1970-11-01	52.0873124147340
1970-12-01	50.6004366812227
1971-01-01	49.0313778990450
1971-02-01	48.7046632124352
1971-03-01	52.0152505446623
1971-04-01	53.0051672559152
1971-05-01	53.6015221527589
1971-06-01	53.9777355416780
1971-07-01	53.6770691994573
1971-08-01	52.8327460016265
1971-09-01	52.2881126455456
1971-10-01	52.5831755477414
1971-11-01	51.7857142857143
1971-12-01	49.4722598105548
1972-01-01	48.4717338382472
1972-02-01	47.9945799457995
1972-03-01	49.7424776362158
1972-04-01	50.9347060417231
1972-05-01	52.3114355231144
1972-06-01	52.0670089165090
1972-07-01	52.0760782212698
1972-08-01	51.7527428418518
1972-09-01	51.6724645437517
1972-10-01	52.6203777600426
1972-11-01	51.5433741351783
1972-12-01	50.3593292520628
1973-01-01	49.6012759170654
1973-02-01	49.6679946879150
1973-03-01	50.8497079129049
1973-04-01	51.6188959660297
1973-05-01	51.9480519480519
1973-06-01	53.1374106433678
1973-07-01	52.7417218543046
1973-08-01	51.4943136736313
1973-09-01	52.1922873745378
1973-10-01	53.8156852389754
1973-11-01	52.2715266772319
1973-12-01	48.9569580142593
1974-01-01	47.5461741424802
1974-02-01	48.1032665964173
1974-03-01	49.2088607594937
1974-04-01	50.9747102212856
1974-05-01	51.8674381904261
1974-06-01	51.5366430260047
1974-07-01	50.6179332106232
1974-08-01	50.2099737532808
1974-09-01	50.5774278215223
1974-10-01	50.8661417322835
1974-11-01	49.5538057742782
1974-12-01	47.4153765415901
1975-01-01	45.7951270631386
1975-02-01	46.2303664921466
1975-03-01	47.6689366160293
1975-04-01	48.9272632129775
1975-05-01	50.8098223615465
1975-06-01	51.3435950952257
1975-07-01	50.9133611691023
1975-08-01	50.1173402868318
1975-09-01	50.0000000000000
1975-10-01	49.8699271592092
1975-11-01	48.7506507027590
1975-12-01	47.4122236671001
1976-01-01	46.1938165757340
1976-02-01	46.3598543941758
1976-03-01	48.1924577373212
1976-04-01	49.4285714285714
1976-05-01	50.1685247601763
1976-06-01	50.2980046644208
1976-07-01	50.7652399481193
1976-08-01	50.3235827077401
1976-09-01	50.4653567735264
1976-10-01	50.3619441571872
1976-11-01	49.2629945694337
1976-12-01	48.2812096148876
1977-01-01	47.0831182240578
1977-02-01	47.0952749806352
1977-03-01	48.2705214248838
1977-04-01	50.9677419354839
1977-05-01	51.8165421283174
1977-06-01	51.8804739824832
1977-07-01	51.8804739824832
1977-08-01	50.9904810908155
1977-09-01	51.2721665381650
1977-10-01	51.1173901875160
1977-11-01	50.4879301489471
1977-12-01	49.6018494734138
1978-01-01	47.8450487429451
1978-02-01	48.0256410256410
1978-03-01	49.2690433444473
1978-04-01	51.0245901639344
1978-05-01	52.7742265405267
1978-06-01	53.2719836400818
1978-07-01	52.2239263803681
1978-08-01	51.6845329249617
1978-09-01	51.8754784383771
1978-10-01	52.1672616012239
1978-11-01	51.2742099898063
1978-12-01	50.2422851313440
1979-01-01	49.2993630573248
1979-02-01	48.9047376464595
1979-03-01	49.6562261268144
1979-04-01	51.6916815059781
1979-05-01	53.0264496439471
1979-06-01	52.9351969504447
1979-07-01	52.5540025412961
1979-08-01	52.3108176739462
1979-09-01	52.3217457498097
1979-10-01	52.7397260273973
1979-11-01	51.6586477589263
1979-12-01	50.1645986325652
1980-01-01	48.8866396761134
1980-02-01	49.0508731966591
1980-03-01	49.8734817813765
1980-04-01	51.8817883303865
1980-05-01	52.9396921524098
1980-06-01	53.4408873203932
1980-07-01	53.1786074672048
1980-08-01	52.7574918156636
1980-09-01	52.7917505030181
1980-10-01	52.3749685850716
1980-11-01	51.7076845806128
1980-12-01	50.5527638190955
1981-01-01	49.1214859437751
1981-02-01	48.7198795180723
1981-03-01	49.8995983935743
1981-04-01	52.4096385542169
1981-05-01	53.1108881083793
1981-06-01	52.9470780035114
1981-07-01	52.8098344204716
1981-08-01	52.4931094963668
1981-09-01	52.5419484097170
1981-10-01	52.7290936404607
1981-11-01	52.4536805207812
1981-12-01	51.7803410230692
1982-01-01	50.1125844383287
1982-02-01	49.9125655758181
1982-03-01	51.0622344413897
1982-04-01	52.4213679480779
1982-05-01	53.5144566301097
1982-06-01	53.4212490669321
1982-07-01	52.8254916604431
1982-08-01	52.3845007451565
1982-09-01	52.6681558699429
1982-10-01	53.1366228613935
1982-11-01	52.4565756823821
1982-12-01	52.2095332671301
1983-01-01	50.9162951956414
1983-02-01	50.8906481939634
1983-03-01	52.2169928164479
1983-04-01	53.7110341415141
1983-05-01	54.5859085290482
1983-06-01	54.4310046902000
1983-07-01	54.1368239071376
1983-08-01	53.9314764604387
1983-09-01	54.1605120630231
1983-10-01	54.1717942407088
1983-11-01	53.2841328413284
1983-12-01	51.9192913385827
1984-01-01	50.3317768493487
1984-02-01	50.3687315634218
1984-03-01	51.7690417690418
1984-04-01	53.6310107948970
1984-05-01	54.2422756253065
1984-06-01	54.6055854973052
1984-07-01	54.2605288932419
1984-08-01	53.8010266438524
1984-09-01	54.5498902171261
1984-10-01	54.6009275079326
1984-11-01	53.5121951219512
1984-12-01	52.3309738833293
1985-01-01	51.4020970495001
1985-02-01	51.3770411893736
1985-03-01	52.1336259448915
1985-04-01	53.9980497318381
1985-05-01	54.5166788410032
1985-06-01	54.3684594791920
1985-07-01	54.1717343711992
1985-08-01	53.8293216630197
1985-09-01	54.3425521591460
1985-10-01	54.2656325739215
1985-11-01	53.2929782082324
1985-12-01	51.7324933365641
1986-01-01	51.5129508593561
1986-02-01	51.5232108317215
1986-03-01	52.3441275978734
1986-04-01	53.8777482483692
1986-05-01	54.2857142857143
1986-06-01	54.7388781431335
1986-07-01	54.6068499758804
1986-08-01	53.8517091959557
1986-09-01	53.9404132628544
1986-10-01	54.0936374549820
1986-11-01	53.3509488349748
1986-12-01	52.1749579428022
1987-01-01	51.1276391554702
1987-02-01	51.1276391554702
1987-03-01	52.1937185327260
1987-04-01	54.0138988737120
1987-05-01	54.7698945349952
1987-06-01	54.8526240115025
1987-07-01	54.3670734625508
1987-08-01	54.1308500477555
1987-09-01	54.3068480076354
1987-10-01	54.0971891376846
1987-11-01	53.9376635736379
1987-12-01	53.3603431839847
1988-01-01	52.2121788772598
1988-02-01	51.8447988574149
1988-03-01	52.9159723875268
1988-04-01	54.7290874524715
1988-05-01	55.5529188419554
1988-06-01	55.3524804177546
1988-07-01	55.2338001424163
1988-08-01	54.4441810855653
1988-09-01	54.5884578997162
1988-10-01	54.4166273027870
1988-11-01	53.9660056657224
1988-12-01	53.6677709417889
1989-01-01	52.6353108012290
1989-02-01	52.8355387523630
1989-03-01	53.8279773156900
1989-04-01	55.6001890359168
1989-05-01	56.4961094081585
1989-06-01	56.6784452296820
1989-07-01	56.2308598351001
1989-08-01	55.4562558795861
1989-09-01	55.5008210180624
1989-10-01	55.5607695917410
1989-11-01	55.4434537775692
1989-12-01	54.8826291079812
1990-01-01	53.7919699459967
1990-02-01	54.1696030068123
1990-03-01	55.4120685606950
1990-04-01	56.5095003518649
1990-05-01	57.2097378277154
1990-06-01	57.1863295880150
1990-07-01	56.8650421743205
1990-08-01	56.2339181286550
1990-09-01	56.5694282380397
1990-10-01	56.3636363636364
1990-11-01	56.3156665888396
1990-12-01	55.8231992516370
1991-01-01	55.0081718421667
1991-02-01	55.1039476757767
1991-03-01	55.5892648774796
1991-04-01	57.1228724644439
1991-05-01	57.8787878787879
1991-06-01	58.0111783884490
1991-07-01	57.5489282385834
1991-08-01	57.3621772505234
1991-09-01	57.1229374854752
1991-10-01	57.0664807066481
1991-11-01	57.2623750871485
1991-12-01	57.0330693991616
1992-01-01	55.1475714617709
1992-02-01	55.6665118439387
1992-03-01	56.1105947955390
1992-04-01	57.2824569567241
1992-05-01	58.1978634463539
1992-06-01	58.3816369116624
1992-07-01	57.3317865429234
1992-08-01	57.1825764596849
1992-09-01	57.2552649849572
1992-10-01	57.7510411846367
1992-11-01	57.5561212682250
1992-12-01	56.8745652677950
1993-01-01	55.2314814814815
1993-02-01	54.6422783051632
1993-03-01	55.4654932839278
1993-04-01	57.2586246816393
1993-05-01	57.8363384188627
1993-06-01	57.7998613357985
1993-07-01	57.2981725653481
1993-08-01	56.9515011547344
1993-09-01	56.8659127625202
1993-10-01	57.1098799630656
1993-11-01	57.0011534025375
1993-12-01	56.5950565950566
1994-01-01	55.2862419205910
1994-02-01	54.7134935304991
1994-03-01	55.6634304207120
1994-04-01	57.6914179967615
1994-05-01	58.0138568129330
1994-06-01	57.9773724313092
1994-07-01	57.1758724289346
1994-08-01	56.5096952908587
1994-09-01	56.6190036900369
1994-10-01	56.8265682656826
1994-11-01	56.5628604382930
1994-12-01	56.0277136258660
1995-01-01	55.2686188609638
1995-02-01	55.1628551628552
1995-03-01	55.8585625144442
1995-04-01	57.1560693641618
1995-05-01	57.5219197046608
1995-06-01	57.6701268742791
1995-07-01	57.1791907514451
1995-08-01	56.4463955637708
1995-09-01	56.9713758079409
1995-10-01	56.6220581449008
1995-11-01	56.2500000000000
1995-12-01	56.0434481164779
1996-01-01	55.1270207852194
1996-02-01	54.9155678926671
1996-03-01	56.2702452568255
1996-04-01	57.1660106506136
1996-05-01	57.5393154486586
1996-06-01	58.2851860411370
1996-07-01	57.9532299143320
1996-08-01	57.1031929662193
1996-09-01	57.5687543332563
1996-10-01	57.3376473307141
1996-11-01	56.8160813308688
1996-12-01	56.2297359888837
1997-01-01	55.9196861297023
1997-02-01	56.1748381128585
1997-03-01	56.6011560693642
1997-04-01	57.6780758556892
1997-05-01	58.0041580041580
1997-06-01	58.6238743939044
1997-07-01	58.4355473270076
1997-08-01	57.8862164662350
1997-09-01	58.3140877598152
1997-10-01	58.3140877598152
1997-11-01	57.3111573111573
1997-12-01	57.0733966195879
1998-01-01	56.9743233865371
1998-02-01	56.3165201295696
1998-03-01	56.6797869877286
1998-04-01	57.5000000000000
1998-05-01	58.2137899120777
1998-06-01	58.0712303422757
1998-07-01	57.7412635963897
1998-08-01	57.7839463335646
1998-09-01	57.5589459084605
1998-10-01	57.2914259302057
1998-11-01	56.9116967175220
1998-12-01	56.4179796107507
1999-01-01	55.4861111111111
1999-02-01	55.2930275654390
1999-03-01	56.2094531974050
1999-04-01	57.2820037105751
1999-05-01	57.8117756142791
1999-06-01	57.4078367725481
1999-07-01	57.0964749536178
1999-08-01	57.3580533024334
1999-09-01	57.2289156626506
1999-10-01	56.8681955061385
1999-11-01	56.9939786938397
1999-12-01	56.3543599257885
2000-01-01	55.5529793647113
2000-02-01	55.3003943400603
2000-03-01	55.6897352531352
2000-04-01	57.1196283391405
2000-05-01	57.5574645925238
2000-06-01	57.5539568345324
2000-07-01	57.4715314896584
2000-08-01	57.0631970260223
2000-09-01	57.0499419279907
2000-10-01	57.4779377612634
2000-11-01	57.3949384722545
2000-12-01	56.7247386759582
2001-01-01	56.4984887235527
2001-02-01	56.6930970149254
2001-03-01	56.4670240037287
2001-04-01	57.0762415481464
2001-05-01	57.6851420586866
2001-06-01	57.7550069864928
2001-07-01	57.4726043366752
2001-08-01	56.8997668997669
2001-09-01	56.6534607317642
2001-10-01	57.2293364377183
2001-11-01	57.6413119330077
2001-12-01	56.6635601118360
2002-01-01	55.6879233823873
2002-02-01	55.5685540477305
2002-03-01	55.9456928838951
2002-04-01	56.3964386129335
2002-05-01	56.5410718464779
2002-06-01	57.0425830603650
2002-07-01	57.0424185610499
2002-08-01	56.8011257035647
2002-09-01	56.8517217146873
2002-10-01	57.1763053149145
2002-11-01	57.4812382739212
2002-12-01	56.5922444183314
2003-01-01	55.5007052186178
2003-02-01	55.3697597739048
2003-03-01	56.2985636920179
2003-04-01	56.6446748350613
2003-05-01	57.1394965890379
2003-06-01	57.9553466509988
2003-07-01	57.5194163332549
2003-08-01	57.1428571428571
2003-09-01	57.1966133584196
2003-10-01	57.3847601128880
2003-11-01	57.2705882352941
2003-12-01	57.2068884170795
2004-01-01	56.2234794908062
2004-02-01	56.2322946175637
2004-03-01	56.9306930693069
2004-04-01	57.3245407442299
2004-05-01	57.6243224133868
2004-06-01	58.0302314596127
2004-07-01	58.1659182226424
2004-08-01	58.0614657210402
2004-09-01	58.1224875857177
2004-10-01	58.0774681152574
2004-11-01	57.4095958402269
2004-12-01	57.2240644244434
2005-01-01	57.0447549135686
2005-02-01	56.8246445497630
2005-03-01	57.1394686907021
2005-04-01	58.1472684085511
2005-05-01	59.1318785578748
2005-06-01	59.0498812351544
2005-07-01	58.8487155090390
2005-08-01	58.6165913952936
2005-09-01	58.8500831551437
2005-10-01	58.6543033761293
2005-11-01	57.7820085673489
2005-12-01	57.7592371871275
2006-01-01	57.6574427480916
2006-02-01	57.8595317725752
2006-03-01	57.7125119388730
2006-04-01	58.6602870813397
2006-05-01	59.7753346080306
2006-06-01	59.4885277246654
2006-07-01	59.2432950191571
2006-08-01	59.3195975083852
2006-09-01	59.3577761802061
2006-10-01	59.3959731543624
2006-11-01	59.3959731543624
2006-12-01	58.7740384615385
2007-01-01	57.9213889558717
2007-02-01	58.1221337195269
2007-03-01	58.6573291475489
2007-04-01	59.8067632850242
2007-05-01	60.6426673109447
2007-06-01	60.5650808983337
2007-07-01	60.0387034349298
2007-08-01	59.7094430992736
2007-09-01	59.4090578832647
2007-10-01	59.6414728682170
2007-11-01	60.3393939393939
2007-12-01	60.0242424242424
2008-01-01	59.0191794124788
2008-02-01	58.6089494163424
2008-03-01	59.1970802919708
2008-04-01	60.2045786653678
2008-05-01	60.5839416058394
2008-06-01	60.6673161227472
2008-07-01	60.0340964442280
2008-08-01	59.7462795803855
2008-09-01	60.0195264827923
2008-10-01	59.9511599511600
2008-11-01	60.4986555854314
2008-12-01	60.0195742598483
2009-01-01	59.5833333333333
2009-02-01	59.2883435582822
2009-03-01	58.7527620918242
2009-04-01	59.9164413860900
2009-05-01	60.1180231128596
2009-06-01	60.1180231128596
2009-07-01	59.8721416277354
2009-08-01	60.2018213142998
2009-09-01	60.4433497536946
2009-10-01	59.9408721359941
2009-11-01	60.2857846760286
2009-12-01	59.9260172626387
2010-01-01	59.4074074074074
2010-02-01	59.5302843016069
2010-03-01	59.3919920909540
2010-04-01	60.0098985399654
2010-05-01	60.4748948800396
2010-06-01	60.1433160365703
2010-07-01	60.2919346857991
2010-08-01	60.3217821782178
2010-09-01	61.2335892989844
2010-10-01	60.8071304778411
2010-11-01	60.6435643564356
2010-12-01	60.2671944581890
2011-01-01	60.0098985399654
2011-02-01	60.1634067838574
2011-03-01	60.5435329642677
2011-04-01	61.1432888441199
2011-05-01	61.5094339622642
2011-06-01	61.4997483643684
2011-07-01	61.0719677906392
2011-08-01	60.9552691432904
2011-09-01	60.9398309298856
2011-10-01	60.9549863218105
2011-11-01	61.0253857640617
2011-12-01	60.3637269556552
2012-01-01	59.3633424521263
2012-02-01	59.9601593625498
2012-03-01	59.9302267630202
2012-04-01	60.7838242636046
2012-05-01	61.0847288177956
2012-06-01	61.0402600650162
2012-07-01	60.9414121181773
2012-08-01	60.9229997491848
2012-09-01	61.0343961837811
2012-10-01	61.2465443578789
2012-11-01	61.5249119275289
2012-12-01	60.8914631075296
2013-01-01	61.1167256189995
2013-02-01	61.6046570488484
2013-03-01	61.9107957425241
2013-04-01	62.5317097919838
2013-05-01	62.5349250698502
2013-06-01	62.3792577529232
2013-07-01	62.4427480916030
2013-08-01	62.4872579001019
2013-09-01	63.0639816466990
2013-10-01	63.4183673469388
2013-11-01	63.6433316300460
2013-12-01	63.2668711656442
2014-01-01	62.5064069707842
2014-02-01	62.8050346776265
2014-03-01	62.8086419753086
2014-04-01	63.1728045325779
2014-05-01	63.8402061855670
2014-06-01	64.0701573381480
2014-07-01	63.7419354838710
2014-08-01	63.7445047840704
2014-09-01	64.3282422987316
2014-10-01	64.6189735614308
2014-11-01	64.6433203631647
2014-12-01	64.5454545454546
2015-01-01	63.6127017178553
2015-02-01	63.8259056554600
2015-03-01	63.8331160365059
2015-04-01	64.0041764552336
2015-05-01	64.6198066370525
2015-06-01	65.2571130253198
2015-07-01	64.8705205336123
2015-08-01	64.7105056326958
2015-09-01	65.5226617762641
2015-10-01	65.6708595387841
2015-11-01	65.1193286126410
2015-12-01	65.3441933788755
2016-01-01	65.7285639137296
2016-02-01	65.0237216657881
2016-03-01	65.0580168776371
2016-04-01	65.4607869025614
2016-05-01	65.3907074973601
2016-06-01	66.2529706891999
2016-07-01	66.4904862579281
2016-08-01	66.6313839640116
2016-09-01	67.0021186440678
2016-10-01	66.7725708234048
2016-11-01	66.6225165562914
2016-12-01	66.9851380042463
2017-01-01	66.7462211614956
2017-02-01	66.2330767188744
2017-03-01	66.0467587672689
2017-04-01	66.9238956891964
2017-05-01	67.3138297872340
2017-06-01	67.8999201490551
2017-07-01	67.8818520489622
2017-08-01	67.9456434852118
2017-09-01	68.2205647309536
2017-10-01	68.0618501732871
2017-11-01	68.2848759669245
2017-12-01	68.2425213675214
2018-01-01	68.4323167469235
2018-02-01	68.6746987951807
2018-03-01	69.1854233654877
2018-04-01	69.6677384780279
2018-05-01	69.5523988206915
2018-06-01	69.4429566148902
2018-07-01	69.9302575107296
2018-08-01	70.0429876410532
2018-09-01	70.3544575725027