Month	Percent
1968-01-01	60.0518806744488
1968-02-01	59.3790426908150
1968-03-01	62.0645161290322
1968-04-01	64.8195876288660
1968-05-01	66.1518661518662
1968-06-01	66.3239074550129
1968-07-01	65.5969191270860
1968-08-01	66.1538461538462
1968-09-01	66.2404092071611
1968-10-01	65.9438775510204
1968-11-01	64.8407643312102
1968-12-01	61.9592875318066
1969-01-01	59.9493029150824
1969-02-01	60.3034134007585
1969-03-01	62.5944584382872
1969-04-01	64.5283018867924
1969-05-01	66.7503136762861
1969-06-01	66.4160401002506
1969-07-01	65.1250000000000
1969-08-01	65.2933832709114
1969-09-01	66.1270236612702
1969-10-01	65.9627329192547
1969-11-01	64.0198511166253
1969-12-01	61.2903225806452
1970-01-01	60.4449938195303
1970-02-01	60.4938271604938
1970-03-01	61.8226600985222
1970-04-01	64.0049140049140
1970-05-01	64.9079754601227
1970-06-01	66.4215686274510
1970-07-01	65.7282741738066
1970-08-01	64.3467643467644
1970-09-01	64.6772228989038
1970-10-01	64.0340218712029
1970-11-01	62.5000000000000
1970-12-01	60.5103280680437
1971-01-01	60.0484261501211
1971-02-01	60.0241545893720
1971-03-01	61.7788461538462
1971-04-01	64.2685851318945
1971-05-01	65.6287425149700
1971-06-01	66.1483253588517
1971-07-01	65.1551312649165
1971-08-01	64.6007151370679
1971-09-01	65.2794292508918
1971-10-01	65.4804270462634
1971-11-01	63.4638196915777
1971-12-01	60.9263657957245
1972-01-01	59.0047393364929
1972-02-01	58.2836710369488
1972-03-01	59.3824228028504
1972-04-01	62.5148279952550
1972-05-01	64.8104265402844
1972-06-01	63.7010676156584
1972-07-01	64.4705882352941
1972-08-01	64.0423031727380
1972-09-01	63.3372502937720
1972-10-01	63.7426900584795
1972-11-01	61.6822429906542
1972-12-01	60.8644859813084
1973-01-01	60.5600933488915
1973-02-01	59.7902097902098
1973-03-01	61.0208816705336
1973-04-01	62.6016260162602
1973-05-01	62.9930394431554
1973-06-01	64.0046296296296
1973-07-01	64.3518518518518
1973-08-01	63.8150289017341
1973-09-01	64.0462427745665
1973-10-01	66.0115606936416
1973-11-01	64.3930635838150
1973-12-01	61.2716763005780
1974-01-01	59.6309111880046
1974-02-01	59.8615916955017
1974-03-01	61.0599078341014
1974-04-01	62.7880184331797
1974-05-01	63.1336405529954
1974-06-01	63.5524798154556
1974-07-01	63.7831603229527
1974-08-01	63.2488479262673
1974-09-01	63.2183908045977
1974-10-01	63.6781609195402
1974-11-01	61.5384615384615
1974-12-01	59.7938144329897
1975-01-01	58.2668187001140
1975-02-01	58.2480091012514
1975-03-01	60.1589103291714
1975-04-01	61.6345062429058
1975-05-01	63.0090497737556
1975-06-01	62.6410835214447
1975-07-01	63.4723788049605
1975-08-01	63.3295838020248
1975-09-01	62.6966292134832
1975-10-01	62.4017957351291
1975-11-01	60.9865470852018
1975-12-01	59.0145576707727
1976-01-01	58.0357142857143
1976-02-01	58.1005586592179
1976-03-01	59.6648044692738
1976-04-01	61.5127919911012
1976-05-01	62.7081021087680
1976-06-01	62.1111111111111
1976-07-01	62.5692137320044
1976-08-01	63.1229235880399
1976-09-01	63.4955752212390
1976-10-01	63.2450331125828
1976-11-01	61.4112458654906
1976-12-01	58.5903083700440
1977-01-01	57.0329670329670
1977-02-01	57.1428571428571
1977-03-01	58.6433260393873
1977-04-01	60.7650273224044
1977-05-01	62.0501635768811
1977-06-01	62.5272331154684
1977-07-01	62.4591947769314
1977-08-01	62.2149837133550
1977-09-01	62.5135427952329
1977-10-01	61.5800865800866
1977-11-01	61.7710583153348
1977-12-01	59.9784250269687
1978-01-01	57.1428571428571
1978-02-01	57.4946466809422
1978-03-01	59.3582887700535
1978-04-01	60.6189967982924
1978-05-01	62.8328008519702
1978-06-01	63.4717784877529
1978-07-01	62.1679064824655
1978-08-01	62.4602332979852
1978-09-01	62.8571428571428
1978-10-01	62.2621564482030
1978-11-01	61.6033755274262
1978-12-01	59.6842105263158
1979-01-01	58.0272822665268
1979-02-01	57.5916230366492
1979-03-01	59.4791666666667
1979-04-01	61.6666666666667
1979-05-01	63.0977130977131
1979-06-01	63.4854771784232
1979-07-01	62.8364389233954
1979-08-01	62.8748707342296
1979-09-01	62.4355005159959
1979-10-01	62.3456790123457
1979-11-01	61.3333333333333
1979-12-01	59.8771750255885
1980-01-01	57.6219512195122
1980-02-01	58.3164300202840
1980-03-01	60.4439959636731
1980-04-01	63.1790744466801
1980-05-01	63.2530120481928
1980-06-01	63.6636636636637
1980-07-01	63.3732534930140
1980-08-01	63.3466135458167
1980-09-01	62.8599801390268
1980-10-01	62.0792079207921
1980-11-01	60.7107601184600
1980-12-01	59.0551181102362
1981-01-01	57.6885406464251
1981-02-01	58.0487804878049
1981-03-01	59.5538312318138
1981-04-01	61.9323671497584
1981-05-01	62.3676612127045
1981-06-01	62.4760076775432
1981-07-01	61.9731800766284
1981-08-01	62.7151051625239
1981-09-01	62.5357483317445
1981-10-01	61.7647058823529
1981-11-01	60.9271523178808
1981-12-01	59.0951932139491
1982-01-01	57.4906367041198
1982-02-01	58.7686567164179
1982-03-01	61.0956360259982
1982-04-01	61.5027829313544
1982-05-01	62.9390018484288
1982-06-01	62.6383763837638
1982-07-01	62.6151012891344
1982-08-01	62.6605504587156
1982-09-01	61.7915904936015
1982-10-01	61.6226071103008
1982-11-01	60.5812897366031
1982-12-01	59.4373865698730
1983-01-01	58.7387387387387
1983-02-01	59.0134529147982
1983-03-01	60.0356824264050
1983-04-01	61.4768683274021
1983-05-01	63.5314995563443
1983-06-01	63.8938053097345
1983-07-01	62.9629629629630
1983-08-01	62.3353819139596
1983-09-01	62.9597197898424
1983-10-01	62.4891209747607
1983-11-01	61.3183000867303
1983-12-01	59.4641313742437
1984-01-01	57.6956147893379
1984-02-01	58.3904109589041
1984-03-01	60.0851063829787
1984-04-01	61.5776081424936
1984-05-01	61.8443316412860
1984-06-01	62.3102866779089
1984-07-01	61.8487394957983
1984-08-01	61.4417435037720
1984-09-01	61.7180984153461
1984-10-01	61.8333333333333
1984-11-01	60.4825291181364
1984-12-01	58.4577114427861
1985-01-01	57.8034682080925
1985-02-01	58.2372322899506
1985-03-01	60.0985221674877
1985-04-01	62.2440622440622
1985-05-01	62.9387755102041
1985-06-01	62.5306122448980
1985-07-01	61.8388934092758
1985-08-01	61.8506493506494
1985-09-01	61.9741100323625
1985-10-01	61.7124394184168
1985-11-01	59.9033816425121
1985-12-01	58.3132530120482
1986-01-01	57.6800000000000
1986-02-01	57.6433121019108
1986-03-01	59.1772151898734
1986-04-01	60.5511811023622
1986-05-01	61.5868028279654
1986-06-01	61.8524332810047
1986-07-01	61.6588419405321
1986-08-01	61.4964925954794
1986-09-01	61.4906832298137
1986-10-01	61.6279069767442
1986-11-01	60.4021655065739
1986-12-01	59.4281298299845
1987-01-01	58.2434514637904
1987-02-01	57.8664620107444
1987-03-01	58.9312977099237
1987-04-01	60.0913937547601
1987-05-01	61.9878603945372
1987-06-01	62.2541603630862
1987-07-01	61.2830188679245
1987-08-01	61.2198795180723
1987-09-01	61.8045112781955
1987-10-01	62.0792819745699
1987-11-01	61.2807148175726
1987-12-01	59.8214285714286
1988-01-01	58.8452997779423
1988-02-01	58.8495575221239
1988-03-01	60.3384841795438
1988-04-01	61.1600587371512
1988-05-01	62.0790629575403
1988-06-01	62.2531089978054
1988-07-01	61.5777940102264
1988-08-01	61.7067833698031
1988-09-01	62.4546114742193
1988-10-01	61.8564176939812
1988-11-01	60.4768786127168
1988-12-01	59.9710982658960
1989-01-01	59.2779783393502
1989-02-01	59.3952483801296
1989-03-01	61.1190817790531
1989-04-01	62.1776504297994
1989-05-01	62.5981441827266
1989-06-01	62.8652886671418
1989-07-01	62.8022759601707
1989-08-01	62.8105039034776
1989-09-01	63.0758327427356
1989-10-01	62.9157820240623
1989-11-01	62.5000000000000
1989-12-01	61.9787985865724
1990-01-01	60.0985221674877
1990-02-01	60.6315789473684
1990-03-01	62.5525946704067
1990-04-01	63.6554621848740
1990-05-01	64.3156424581006
1990-06-01	64.2458100558659
1990-07-01	64.7386759581882
1990-08-01	64.0027797081306
1990-09-01	63.7309292649098
1990-10-01	63.9695712309820
1990-11-01	63.3793103448276
1990-12-01	63.0089717046239
1991-01-01	62.2512010981469
1991-02-01	62.2176591375770
1991-03-01	63.8603696098563
1991-04-01	64.7058823529412
1991-05-01	65.0511945392492
1991-06-01	65.9850034083163
1991-07-01	65.6909462219197
1991-08-01	65.6016315431679
1991-09-01	65.6929347826087
1991-10-01	65.3532608695652
1991-11-01	64.6300067888663
1991-12-01	63.9945652173913
1992-01-01	63.3603238866397
1992-02-01	63.6363636363636
1992-03-01	64.2232683254876
1992-04-01	64.0456989247312
1992-05-01	64.6308724832215
1992-06-01	65.7066309444072
1992-07-01	64.9298597194389
1992-08-01	65.4205607476636
1992-09-01	65.5562958027981
1992-10-01	65.2029274783766
1992-11-01	65.1394422310757
1992-12-01	64.5225464190982
1993-01-01	63.2275132275132
1993-02-01	63.7862796833773
1993-03-01	64.4884488448845
1993-04-01	64.1820580474934
1993-05-01	65.2173913043478
1993-06-01	65.8536585365854
1993-07-01	65.6558998022413
1993-08-01	65.6558998022413
1993-09-01	65.1715039577836
1993-10-01	64.2904290429043
1993-11-01	63.6963696369637
1993-12-01	63.5402906208719
1994-01-01	62.5329815303430
1994-02-01	62.1621621621622
1994-03-01	63.3003300330033
1994-04-01	64.4179894179894
1994-05-01	64.5310435931308
1994-06-01	64.7719762062128
1994-07-01	64.9273447820343
1994-08-01	64.8612945838838
1994-09-01	64.0501319261214
1994-10-01	63.3311389071758
1994-11-01	63.2653061224490
1994-12-01	63.1336405529954
1995-01-01	62.3768877216021
1995-02-01	61.7704918032787
1995-03-01	63.5826771653543
1995-04-01	64.9180327868852
1995-05-01	64.5519947678221
1995-06-01	64.1410842586545
1995-07-01	64.2064010450686
1995-08-01	64.3603133159269
1995-09-01	64.9934810951760
1995-10-01	64.0858815875081
1995-11-01	63.4827810266407
1995-12-01	63.3116883116883
1996-01-01	61.7475728155340
1996-02-01	60.9566903684551
1996-03-01	62.2897800776197
1996-04-01	63.5187580853816
1996-05-01	64.1058747579083
1996-06-01	64.6262886597938
1996-07-01	64.8457583547558
1996-08-01	64.3361128928800
1996-09-01	64.7247119078105
1996-10-01	64.8786717752235
1996-11-01	64.7770700636943
1996-12-01	63.4860050890585
1997-01-01	62.4685138539043
1997-02-01	62.4764299182904
1997-03-01	63.6706473915776
1997-04-01	64.3620364550597
1997-05-01	65.0973006905210
1997-06-01	65.4135338345865
1997-07-01	65.3942428035044
1997-08-01	65.0406504065040
1997-09-01	64.0449438202247
1997-10-01	64.6288209606987
1997-11-01	64.2322097378277
1997-12-01	63.6930754834685
1998-01-01	63.1775700934580
1998-02-01	62.3368551895587
1998-03-01	63.1448104412679
1998-04-01	63.5798632691112
1998-05-01	64.9253731343284
1998-06-01	64.2458100558659
1998-07-01	64.3784786641930
1998-08-01	64.3429981492906
1998-09-01	64.2020948860136
1998-10-01	64.2681426814268
1998-11-01	63.1675874769798
1998-12-01	63.1062001227747
1999-01-01	62.9130966952264
1999-02-01	62.6145387904704
1999-03-01	63.1868131868132
1999-04-01	63.6585365853658
1999-05-01	64.1119221411192
1999-06-01	63.8077858880779
1999-07-01	63.5922330097087
1999-08-01	64.0823743185948
1999-09-01	64.5278450363196
1999-10-01	64.1475211608222
1999-11-01	63.2788868723533
1999-12-01	62.6134301270418
2000-01-01	62.2572815533981
2000-02-01	62.0145631067961
2000-03-01	62.1276595744681
2000-04-01	62.4316109422492
2000-05-01	63.0170316301703
2000-06-01	62.7510651247718
2000-07-01	62.8119293974437
2000-08-01	63.5423006695070
2000-09-01	64.2073170731707
2000-10-01	63.9804639804640
2000-11-01	62.8063725490196
2000-12-01	61.9251992642550
2001-01-01	61.6903146206046
2001-02-01	62.1671826625387
2001-03-01	62.6319056486654
2001-04-01	62.1655258245177
2001-05-01	62.0174346201744
2001-06-01	62.3910336239103
2001-07-01	62.1739130434783
2001-08-01	62.1973929236499
2001-09-01	62.1671826625387
2001-10-01	62.2839506172839
2001-11-01	61.5384615384615
2001-12-01	60.7626076260763
2002-01-01	61.5384615384615
2002-02-01	61.5478366849482
2002-03-01	61.7539585870889
2002-04-01	61.0097323600973
2002-05-01	61.3333333333333
2002-06-01	62.1376811594203
2002-07-01	62.2822822822823
2002-08-01	61.6995810891682
2002-09-01	62.1121718377088
2002-10-01	62.4480095068330
2002-11-01	61.3190730837790
2002-12-01	61.1275964391691
2003-01-01	61.3475177304964
2003-02-01	61.1176470588235
2003-03-01	61.8043350908026
2003-04-01	61.5789473684210
2003-05-01	61.4892379290285
2003-06-01	62.5361899247250
2003-07-01	62.6874279123414
2003-08-01	62.5287356321839
2003-09-01	62.7720504009164
2003-10-01	62.8066172276098
2003-11-01	62.7272727272727
2003-12-01	62.6062322946176
2004-01-01	61.7464788732394
2004-02-01	62.0224719101124
2004-03-01	62.8076062639821
2004-04-01	63.3630289532294
2004-05-01	63.0410654827969
2004-06-01	63.1782945736434
2004-07-01	63.5060639470783
2004-08-01	63.7012630422845
2004-09-01	63.5667396061269
2004-10-01	63.7206764866339
2004-11-01	63.3297062023939
2004-12-01	63.4146341463415
2005-01-01	63.4542501353546
2005-02-01	62.6284478096268
2005-03-01	62.9929767693139
2005-04-01	63.8424177010254
2005-05-01	64.2434033387184
2005-06-01	63.9591178052716
2005-07-01	64.4122383252818
2005-08-01	64.8634172469202
2005-09-01	64.8663101604278
2005-10-01	63.9423076923077
2005-11-01	63.5344367325147
2005-12-01	63.6315228966986
2006-01-01	63.2055378061768
2006-02-01	63.7040979244279
2006-03-01	64.0616693248272
2006-04-01	64.0957446808511
2006-05-01	65.4622741764081
2006-06-01	65.1804670912951
2006-07-01	64.9150743099788
2006-08-01	65.2866242038216
2006-09-01	65.4275092936803
2006-10-01	64.8591174906964
2006-11-01	65.2127659574468
2006-12-01	65.5319148936170
2007-01-01	65.3643083421330
2007-02-01	65.6282998944034
2007-03-01	65.3276955602537
2007-04-01	65.2403592181722
2007-05-01	66.2269129287599
2007-06-01	66.5963060686016
2007-07-01	66.7721518987342
2007-08-01	67.0358649789030
2007-09-01	66.5435356200528
2007-10-01	66.4379947229551
2007-11-01	66.7018469656992
2007-12-01	66.3852242744063
2008-01-01	65.8742736397253
2008-02-01	65.6448202959831
2008-03-01	65.9439450026441
2008-04-01	66.3670015864622
2008-05-01	67.2486772486772
2008-06-01	67.1602326811211
2008-07-01	66.6137566137566
2008-08-01	66.6490206458444
2008-09-01	67.0201484623542
2008-10-01	66.8613913967074
2008-11-01	66.5603402445508
2008-12-01	65.7446808510638
2009-01-01	66.3113006396588
2009-02-01	65.9903897490657
2009-03-01	65.6684491978610
2009-04-01	65.6132833422603
2009-05-01	65.9517426273458
2009-06-01	65.7020364415863
2009-07-01	65.4691689008043
2009-08-01	65.6836461126005
2009-09-01	66.0589812332440
2009-10-01	65.4691689008043
2009-11-01	65.2010723860590
2009-12-01	65.5412647374062
2010-01-01	65.8458244111349
2010-02-01	65.4175588865096
2010-03-01	65.3454740224960
2010-04-01	64.9010165864098
2010-05-01	65.4710920770878
2010-06-01	65.7754010695187
2010-07-01	65.2429257875067
2010-08-01	65.5632674853177
2010-09-01	66.2933333333333
2010-10-01	65.5650319829424
2010-11-01	65.3539116551357
2010-12-01	65.4970760233918
2011-01-01	65.5885471898197
2011-02-01	65.6431974589730
2011-03-01	65.9860290166577
2011-04-01	66.0407725321888
2011-05-01	66.4879356568364
2011-06-01	66.5951742627346
2011-07-01	65.7020364415863
2011-08-01	65.7004830917874
2011-09-01	65.3255690841715
2011-10-01	65.5355249204666
2011-11-01	66.2054284193720
2011-12-01	65.7964837506660
2012-01-01	65.0319829424307
2012-02-01	65.4730090860502
2012-03-01	65.4857756307032
2012-04-01	64.5317545748116
2012-05-01	65.4967602591793
2012-06-01	65.6554712892741
2012-07-01	65.4703643284394
2012-08-01	65.4644808743170
2012-09-01	65.4226125137212
2012-10-01	65.8213891951488
2012-11-01	66.3716814159292
2012-12-01	65.5764966740576
2013-01-01	65.7733109994416
2013-02-01	66.8721973094170
2013-03-01	67.1918964546989
2013-04-01	66.1208356860531
2013-05-01	66.1756373937677
2013-06-01	66.6287663445139
2013-07-01	66.6856492027335
2013-08-01	67.0285714285714
2013-09-01	67.4311926605504
2013-10-01	67.8550891316849
2013-11-01	68.2631275245240
2013-12-01	67.0908039329092
2014-01-01	67.8509027373326
2014-02-01	68.0888369374635
2014-03-01	68.4272300469484
2014-04-01	68.0400235432607
2014-05-01	68.4769775678866
2014-06-01	69.1350710900474
2014-07-01	68.6087990487515
2014-08-01	68.7537268932618
2014-09-01	69.3828639904134
2014-10-01	69.4110576923077
2014-11-01	69.4209891435464
2014-12-01	69.0677966101695
2015-01-01	69.4647201946472
2015-02-01	69.9206833435021
2015-03-01	69.5838433292534
2015-04-01	69.0563725490196
2015-05-01	69.2685925015366
2015-06-01	70.0123152709360
2015-07-01	70.4685573366214
2015-08-01	70.3153988868275
2015-09-01	71.1538461538462
2015-10-01	70.8955223880597
2015-11-01	70.6616729088639
2015-12-01	70.9011264080100
2016-01-01	70.7102451288498
2016-02-01	70.8517350157729
2016-03-01	71.1125158027813
2016-04-01	70.9309689677011
2016-05-01	71.2111604311985
2016-06-01	71.3015873015873
2016-07-01	71.1648631444940
2016-08-01	72.0382165605096
2016-09-01	72.8781110402042
2016-10-01	72.5703324808184
2016-11-01	71.8129404228059
2016-12-01	72.1616420782553
2017-01-01	72.7681438664098
2017-02-01	72.7448453608247
2017-03-01	72.5806451612903
2017-04-01	72.3335488041370
2017-05-01	73.1391585760518
2017-06-01	73.2339598185353
2017-07-01	73.1992212848799
2017-08-01	74.1558441558442
2017-09-01	74.7238466536712
2017-10-01	74.0403383214053
2017-11-01	74.1368078175896
2017-12-01	74.2503259452412
2018-01-01	74.7877204441541
2018-02-01	74.6239372138653
2018-03-01	74.9836280288146
2018-04-01	75.0327653997379
2018-05-01	75.5570117955439
2018-06-01	74.9508196721311
2018-07-01	74.6062992125984
2018-08-01	75.3937007874016
2018-09-01	76.0998030203546