Month	Percent
1968-01-01	48.5044865403789
1968-02-01	48.9775561097257
1968-03-01	44.0897755610973
1968-04-01	41.7456359102244
1968-05-01	40.8275174476570
1968-06-01	41.5254237288136
1968-07-01	41.6043846537120
1968-08-01	41.9950124688279
1968-09-01	43.9560439560440
1968-10-01	44.2778610694653
1968-11-01	45.3226613306653
1968-12-01	46.7935871743487
1969-01-01	48.5699949824385
1969-02-01	49.6485943775100
1969-03-01	44.9974861739568
1969-04-01	43.1234256926952
1969-05-01	42.1583459404942
1969-06-01	42.7130610186586
1969-07-01	42.3387096774194
1969-08-01	43.1669188098840
1969-09-01	44.2763489662128
1969-10-01	44.9596774193548
1969-11-01	46.1189516129032
1969-12-01	47.1270161290323
1970-01-01	48.9157841654060
1970-02-01	48.6146095717884
1970-03-01	43.8852541519879
1970-04-01	42.7780573729240
1970-05-01	42.5050301810865
1970-06-01	42.6130653266332
1970-07-01	41.8382722250126
1970-08-01	43.0075187969925
1970-09-01	43.3933933933934
1970-10-01	44.5000000000000
1970-11-01	45.2547452547452
1970-12-01	45.2273863068466
1971-01-01	46.8562874251497
1971-02-01	46.9092721834496
1971-03-01	42.5161611138737
1971-04-01	41.3194444444444
1971-05-01	41.0510659395141
1971-06-01	41.6666666666667
1971-07-01	41.8858560794045
1971-08-01	43.1343283582090
1971-09-01	44.4389027431421
1971-10-01	44.8775612193903
1971-11-01	45.8416833667335
1971-12-01	46.4824120603015
1972-01-01	47.5012619888945
1972-02-01	47.2550025654182
1972-03-01	44.4902162718847
1972-04-01	44.0537745604964
1972-05-01	44.0704298291041
1972-06-01	44.5194805194805
1972-07-01	44.3064182194617
1972-08-01	45.1997924234562
1972-09-01	45.7202505219207
1972-10-01	46.3707571801567
1972-11-01	47.0896696381751
1972-12-01	47.5039411455596
1973-01-01	48.4928609201481
1973-02-01	48.9101541733121
1973-03-01	46.7449306296692
1973-04-01	45.5275843599357
1973-05-01	45.5866523143165
1973-06-01	45.2535059331176
1973-07-01	45.1193058568330
1973-08-01	47.0652173913044
1973-09-01	47.0043572984749
1973-10-01	47.4029524330235
1973-11-01	48.8193300384404
1973-12-01	50.2753303964758
1974-01-01	52.5179856115108
1974-02-01	52.1377012770683
1974-03-01	48.9397321428571
1974-04-01	47.6483762597984
1974-05-01	47.2502805836139
1974-06-01	48.3961733258300
1974-07-01	49.2638731596829
1974-08-01	49.7732426303855
1974-09-01	49.6583143507973
1974-10-01	49.6855345911950
1974-11-01	51.3513513513514
1974-12-01	52.4523946912868
1975-01-01	54.0775014459225
1975-02-01	54.5560069645966
1975-03-01	52.2448979591837
1975-04-01	50.5545826036194
1975-05-01	49.7660818713450
1975-06-01	51.3165593914570
1975-07-01	50.8823529411765
1975-08-01	51.4437242192104
1975-09-01	52.0943952802360
1975-10-01	51.8628030751035
1975-11-01	52.9097387173397
1975-12-01	52.4433849821216
1976-01-01	54.5128511655708
1976-02-01	55.1558752997602
1976-03-01	52.1058965102286
1976-04-01	51.7158338350391
1976-05-01	52.7710843373494
1976-06-01	53.3453887884268
1976-07-01	52.3924894003634
1976-08-01	52.8484848484848
1976-09-01	53.7250151423380
1976-10-01	55.0425273390036
1976-11-01	54.9270072992701
1976-12-01	54.8505186089079
1977-01-01	56.8543451652387
1977-02-01	56.9325153374233
1977-03-01	53.9692307692308
1977-04-01	52.8976572133169
1977-05-01	53.2059186189889
1977-06-01	53.4898085237801
1977-07-01	52.7588344699318
1977-08-01	53.7507749535028
1977-09-01	54.5905707196030
1977-10-01	56.2383612662942
1977-11-01	55.6867619639528
1977-12-01	55.1960174237710
1978-01-01	57.5155279503106
1978-02-01	57.8358208955224
1978-03-01	55.0435865504359
1978-04-01	52.8348909657321
1978-05-01	52.5202240199129
1978-06-01	52.8348909657321
1978-07-01	53.4622582657517
1978-08-01	54.6475358702433
1978-09-01	55.6179775280899
1978-10-01	56.2694946974423
1978-11-01	56.8309419837804
1978-12-01	56.7145534041224
1979-01-01	58.3125000000000
1979-02-01	58.6983729662078
1979-03-01	56.4455569461827
1979-04-01	54.6250000000000
1979-05-01	53.5915053091818
1979-06-01	53.3707865168539
1979-07-01	53.5959974984365
1979-08-01	54.3464665415885
1979-09-01	56.1250000000000
1979-10-01	56.2148657089319
1979-11-01	57.1695760598504
1979-12-01	57.9439252336449
1980-01-01	59.5757953836556
1980-02-01	60.6875000000000
1980-03-01	57.9637726420987
1980-04-01	56.2694946974423
1980-05-01	55.0778816199377
1980-06-01	54.1044776119403
1980-07-01	53.7071651090343
1980-08-01	54.6302050963331
1980-09-01	55.7001239157373
1980-10-01	56.4975247524752
1980-11-01	56.9839307787392
1980-12-01	57.2575663990117
1981-01-01	58.8235294117647
1981-02-01	59.4779366065880
1981-03-01	57.0006222775358
1981-04-01	54.5171339563863
1981-05-01	54.5568039950062
1981-06-01	53.4375000000000
1981-07-01	53.9473684210526
1981-08-01	55.2005012531328
1981-09-01	56.5435190983093
1981-10-01	57.4201628052599
1981-11-01	57.2413793103448
1981-12-01	57.7164366373902
1982-01-01	59.5744680851064
1982-02-01	60.0750938673342
1982-03-01	57.3566084788030
1982-04-01	54.6699875466999
1982-05-01	54.5962732919255
1982-06-01	55.1488833746898
1982-07-01	54.9287042777433
1982-08-01	55.7134033353922
1982-09-01	56.7118226600985
1982-10-01	56.7567567567568
1982-11-01	56.3112745098039
1982-12-01	56.4950980392157
1983-01-01	58.4558823529412
1983-02-01	58.4455324357405
1983-03-01	55.9902200488998
1983-04-01	53.5409035409035
1983-05-01	53.2031726662599
1983-06-01	53.4388314059647
1983-07-01	54.1033434650456
1983-08-01	55.3062462098241
1983-09-01	56.2083585705633
1983-10-01	56.4613526570048
1983-11-01	56.4272782136391
1983-12-01	56.9963811821472
1984-01-01	58.6248492159228
1984-02-01	59.2145015105740
1984-03-01	57.6250753465943
1984-04-01	54.5399879735418
1984-05-01	54.2016806722689
1984-06-01	54.2190305206463
1984-07-01	54.5508982035928
1984-08-01	55.0119331742243
1984-09-01	55.2380952380952
1984-10-01	56.1570493753718
1984-11-01	56.9988137603796
1984-12-01	57.0243034973326
1985-01-01	58.5553582001184
1985-02-01	59.1824644549763
1985-03-01	57.6170717249555
1985-04-01	55.7590076786769
1985-05-01	55.6014150943396
1985-06-01	55.7907113462669
1985-07-01	55.4641598119859
1985-08-01	56.3487419543593
1985-09-01	56.9176882661996
1985-10-01	57.1678321678322
1985-11-01	57.1844095404305
1985-12-01	57.9069767441860
1986-01-01	58.5124927367809
1986-02-01	59.2571096923970
1986-03-01	57.3163678426836
1986-04-01	55.0289017341040
1986-05-01	55.3695150115473
1986-06-01	55.1843317972350
1986-07-01	54.7126436781609
1986-08-01	55.6889651229274
1986-09-01	56.7844925883694
1986-10-01	57.1022727272727
1986-11-01	57.1428571428572
1986-12-01	58.2860385925085
1987-01-01	59.7395243488109
1987-02-01	60.2724177071510
1987-03-01	57.9751131221720
1987-04-01	55.5869074492099
1987-05-01	55.2616769836804
1987-06-01	55.5243970835670
1987-07-01	55.9103641456583
1987-08-01	55.8347292015634
1987-09-01	56.9359331476323
1987-10-01	57.7925679423184
1987-11-01	57.4115044247788
1987-12-01	57.9646017699115
1988-01-01	59.9337748344371
1988-02-01	60.8743774211400
1988-03-01	58.1356867071153
1988-04-01	55.2805280528053
1988-05-01	54.9890350877193
1988-06-01	55.2271483305966
1988-07-01	55.8292282430214
1988-08-01	56.2704471101418
1988-09-01	57.3210412147505
1988-10-01	57.5609756097561
1988-11-01	57.4905354245538
1988-12-01	57.8833693304536
1989-01-01	59.7949271451700
1989-02-01	59.8595353862777
1989-03-01	57.8125000000000
1989-04-01	54.9220010758472
1989-05-01	54.7017732401934
1989-06-01	54.3699731903485
1989-07-01	54.7261009667025
1989-08-01	55.9059326563335
1989-09-01	56.9755058572950
1989-10-01	56.8387440127728
1989-11-01	56.7481402763018
1989-12-01	57.2567783094099
1990-01-01	59.6808510638298
1990-02-01	59.3699946609717
1990-03-01	57.0287539936102
1990-04-01	54.5696068012752
1990-05-01	53.4711181770005
1990-06-01	53.8665254237288
1990-07-01	54.0425531914894
1990-08-01	55.0955414012739
1990-09-01	55.3146483342147
1990-10-01	54.7908946532557
1990-11-01	55.3789083200848
1990-12-01	56.0148383677795
1991-01-01	58.2365364308342
1991-02-01	58.2097457627119
1991-03-01	55.7489451476793
1991-04-01	53.1970649895178
1991-05-01	52.0354906054280
1991-06-01	52.2146951537259
1991-07-01	52.5574112734864
1991-08-01	53.2467532467532
1991-09-01	54.0134645261523
1991-10-01	54.4984488107549
1991-11-01	54.3904958677686
1991-12-01	54.2679772374547
1992-01-01	56.6165023352361
1992-02-01	56.3541666666667
1992-03-01	54.3274244004171
1992-04-01	51.5943544171458
1992-05-01	50.8863399374348
1992-06-01	52.1625846795206
1992-07-01	51.7259414225941
1992-08-01	52.0876826722338
1992-09-01	53.5974973931178
1992-10-01	53.5453597497393
1992-11-01	53.5174570088588
1992-12-01	53.5770234986945
1993-01-01	56.1421850496602
1993-02-01	56.3254593175853
1993-03-01	54.1601255886970
1993-04-01	51.3343799058085
1993-05-01	51.3612565445026
1993-06-01	51.4121338912134
1993-07-01	50.7094062007357
1993-08-01	51.8615626638700
1993-09-01	53.0676455165181
1993-10-01	52.2035676810073
1993-11-01	52.4134312696747
1993-12-01	52.7310924369748
1994-01-01	55.4210526315789
1994-02-01	55.4261514028587
1994-03-01	52.8820729772607
1994-04-01	50.5023796932840
1994-05-01	50.3970354685019
1994-06-01	51.0582010582011
1994-07-01	50.7970244420829
1994-08-01	51.1158342189160
1994-09-01	52.3354564755839
1994-10-01	52.6287838555497
1994-11-01	52.4973432518597
1994-12-01	52.6091586794462
1995-01-01	54.5842217484008
1995-02-01	55.0134048257373
1995-03-01	53.0010718113612
1995-04-01	51.2600536193030
1995-05-01	51.2077294685990
1995-06-01	50.9677419354839
1995-07-01	50.4864864864865
1995-08-01	51.2432432432432
1995-09-01	52.2162162162162
1995-10-01	52.3526230394808
1995-11-01	52.2468868435300
1995-12-01	52.9858849077090
1996-01-01	54.1099618943930
1996-02-01	53.9978094194962
1996-03-01	52.5998905309250
1996-04-01	50.4928806133625
1996-05-01	49.9725726823917
1996-06-01	49.2037342119714
1996-07-01	49.5854063018242
1996-08-01	50.4155124653740
1996-09-01	51.4396456256921
1996-10-01	52.5235718247366
1996-11-01	52.8888888888889
1996-12-01	52.7576601671309
1997-01-01	53.8031319910514
1997-02-01	53.7985368598762
1997-03-01	52.4774774774775
1997-04-01	50.5630630630631
1997-05-01	49.5769881556684
1997-06-01	49.6610169491525
1997-07-01	49.6587030716724
1997-08-01	50.1426126640046
1997-09-01	50.6833712984055
1997-10-01	51.5981735159817
1997-11-01	52.4871355060034
1997-12-01	52.4355300859599
1998-01-01	53.7132987910190
1998-02-01	54.3402777777778
1998-03-01	52.6589595375722
1998-04-01	50.2893518518519
1998-05-01	49.6519721577726
1998-06-01	50.0290528762348
1998-07-01	50.2045587375804
1998-08-01	50.4103165298945
1998-09-01	51.7584994138335
1998-10-01	52.1739130434783
1998-11-01	52.1790341578327
1998-12-01	52.3612750885478
1999-01-01	54.0876777251185
1999-02-01	54.9463647199046
1999-03-01	53.0113297555158
1999-04-01	51.0447761194030
1999-05-01	49.9102333931777
1999-06-01	50.5995203836930
1999-07-01	51.4785757392879
1999-08-01	51.7824773413897
1999-09-01	53.2082324455206
1999-10-01	53.7901758641601
1999-11-01	54.1362530413625
1999-12-01	53.4713763702802
2000-01-01	55.3516819571865
2000-02-01	55.9040590405904
2000-03-01	53.1980319803198
2000-04-01	51.4760147601476
2000-05-01	50.8014796547472
2000-06-01	51.5750463248919
2000-07-01	51.8334369173400
2000-08-01	52.6774595267746
2000-09-01	53.3001245330012
2000-10-01	52.5561097256858
2000-11-01	52.7465667915106
2000-12-01	53.1582238899312
2001-01-01	55.4020100502513
2001-02-01	55.9418457648546
2001-03-01	53.6030341340076
2001-04-01	51.4538558786346
2001-05-01	50.9183027232426
2001-06-01	52.1573604060914
2001-07-01	52.2044728434505
2001-08-01	52.1460602178091
2001-09-01	54.4465770953295
2001-10-01	54.4230769230769
2001-11-01	54.1425818882466
2001-12-01	54.8843187660668
2002-01-01	56.5048543689320
2002-02-01	57.1986970684039
2002-03-01	54.9414824447334
2002-04-01	52.5324675324675
2002-05-01	52.8338762214984
2002-06-01	53.2637075718016
2002-07-01	53.0183727034121
2002-08-01	52.1710526315789
2002-09-01	54.3063773833005
2002-10-01	55.0362080315997
2002-11-01	55.8784676354029
2002-12-01	55.9523809523810
2003-01-01	57.2564612326044
2003-02-01	57.3715810540360
2003-03-01	55.5333333333333
2003-04-01	53.3644237175217
2003-05-01	53.1730126920508
2003-06-01	53.6144578313253
2003-07-01	54.1666666666667
2003-08-01	54.0795684423466
2003-09-01	54.7779273216689
2003-10-01	55.9676331759946
2003-11-01	55.8406482106685
2003-12-01	55.8644067796610
2004-01-01	58.0163043478261
2004-02-01	58.4415584415584
2004-03-01	56.5780504430811
2004-04-01	54.6321525885559
2004-05-01	54.3715846994536
2004-06-01	55.0754458161866
2004-07-01	54.3762922122674
2004-08-01	54.0055248618785
2004-09-01	54.9480968858132
2004-10-01	55.3014553014553
2004-11-01	56.1415683553088
2004-12-01	56.3977746870654
2005-01-01	58.4787159804606
2005-02-01	58.7657784011220
2005-03-01	56.5826330532213
2005-04-01	54.2075736325386
2005-05-01	53.7219101123596
2005-06-01	53.9760731878958
2005-07-01	54.0311173974540
2005-08-01	53.8625088589653
2005-09-01	54.3586109142452
2005-10-01	54.4357700496806
2005-11-01	55.0177935943060
2005-12-01	55.3100498930862
2006-01-01	57.0407433881344
2006-02-01	57.4712643678161
2006-03-01	56.0573476702509
2006-04-01	53.7688442211055
2006-05-01	53.5585909417685
2006-06-01	53.0597552195824
2006-07-01	53.6903039073806
2006-08-01	54.2815674891147
2006-09-01	54.8948513415518
2006-10-01	54.4992743105951
2006-11-01	55.5232558139535
2006-12-01	56.9970845481050
2007-01-01	58.1190301249082
2007-02-01	57.2479764532745
2007-03-01	55.6291390728477
2007-04-01	52.2058823529412
2007-05-01	52.7982326951399
2007-06-01	53.0582166543847
2007-07-01	54.5118343195266
2007-08-01	55.0853749072012
2007-09-01	55.0520059435364
2007-10-01	55.4234769687964
2007-11-01	55.6631892697466
2007-12-01	56.7486950037286
2008-01-01	58.5201793721973
2008-02-01	58.0959520239880
2008-03-01	56.5315315315315
2008-04-01	52.7067669172932
2008-05-01	52.4812030075188
2008-06-01	53.9562923888470
2008-07-01	55.9334845049131
2008-08-01	54.3247344461305
2008-09-01	55.2691432903715
2008-10-01	56.3069908814590
2008-11-01	55.7501904036558
2008-12-01	56.6742944317315
2009-01-01	58.3333333333333
2009-02-01	58.5440613026820
2009-03-01	57.9432079815810
2009-04-01	54.1826554105909
2009-05-01	53.6098310291859
2009-06-01	54.6224961479199
2009-07-01	55.6240369799692
2009-08-01	55.8481797056545
2009-09-01	56.4678543764524
2009-10-01	57.3973663826491
2009-11-01	57.1095571095571
2009-12-01	58.0996884735202
2010-01-01	59.4067135050742
2010-02-01	59.7809076682316
2010-03-01	57.8823529411765
2010-04-01	56.1224489795918
2010-05-01	55.7389937106918
2010-06-01	55.5031446540881
2010-07-01	56.8611987381704
2010-08-01	56.6455696202532
2010-09-01	56.8938193343899
2010-10-01	57.2446555819478
2010-11-01	57.0747217806041
2010-12-01	57.4383452665076
2011-01-01	59.5371109337590
2011-02-01	59.5846645367412
2011-03-01	57.9852579852580
2011-04-01	54.7463175122750
2011-05-01	54.6798029556650
2011-06-01	54.8440065681445
2011-07-01	56.2139917695473
2011-08-01	56.7275747508306
2011-09-01	58.3064516129032
2011-10-01	58.7761674718196
2011-11-01	58.5012087026592
2011-12-01	58.8235294117647
2012-01-01	61.0169491525424
2012-02-01	60.3559870550162
2012-03-01	60.2750809061489
2012-04-01	56.1943319838057
2012-05-01	57.1312803889789
2012-06-01	57.0502431118314
2012-07-01	56.4476885644769
2012-08-01	56.6314076484947
2012-09-01	57.6547231270358
2012-10-01	57.6891781936534
2012-11-01	58.6797066014670
2012-12-01	60.0326264274062
2013-01-01	60.0490196078431
2013-02-01	59.9018003273322
2013-03-01	59.6075224856909
2013-04-01	55.0204081632653
2013-05-01	55.5555555555556
2013-06-01	56.6530612244898
2013-07-01	57.0843570843571
2013-08-01	56.0755336617406
2013-09-01	57.3420836751436
2013-10-01	57.9163248564397
2013-11-01	57.3891625615764
2013-12-01	58.3401807723911
2014-01-01	60.1806239737274
2014-02-01	59.3415637860082
2014-03-01	58.0724876441516
2014-04-01	56.0955518945634
2014-05-01	55.5555555555556
2014-06-01	55.8024691358025
2014-07-01	56.2500000000000
2014-08-01	56.3531353135314
2014-09-01	56.3066776586974
2014-10-01	58.0858085808581
2014-11-01	57.9207920792079
2014-12-01	57.3080099091660
2015-01-01	59.5375722543353
2015-02-01	60.1323407775021
2015-03-01	59.6201486374897
2015-04-01	55.8216350123865
2015-05-01	55.7295960428689
2015-06-01	56.0131795716639
2015-07-01	57.0602807597027
2015-08-01	56.9536423841060
2015-09-01	56.5181518151815
2015-10-01	56.5648224607762
2015-11-01	56.6006600660066
2015-12-01	57.1310799670239
2016-01-01	57.7906018136851
2016-02-01	58.0165289256198
2016-03-01	57.5432811211871
2016-04-01	54.2456718878813
2016-05-01	54.5304777594728
2016-06-01	53.5802469135802
2016-07-01	54.9794238683128
2016-08-01	54.7481420313790
2016-09-01	54.8227535037098
2016-10-01	54.4032921810700
2016-11-01	56.2139917695473
2016-12-01	55.6013179571664
2017-01-01	56.5573770491803
2017-02-01	58.3743842364532
2017-03-01	58.3743842364532
2017-04-01	54.0163934426230
2017-05-01	53.6006546644844
2017-06-01	53.0712530712531
2017-07-01	53.5188216039280
2017-08-01	54.3513957307061
2017-09-01	54.8730548730549
2017-10-01	55.5192150449714
2017-11-01	56.7103109656301
2017-12-01	55.4463554463554
2018-01-01	54.9549549549550
2018-02-01	55.2459016393443
2018-03-01	54.5081967213115
2018-04-01	52.0850367947670
2018-05-01	51.0220768601799
2018-06-01	50.1224489795918
2018-07-01	50.6122448979592
2018-08-01	51.2295081967213
2018-09-01	52.6186579378069