Month	Percent
1978-02-01	50.2726118661020
1978-03-01	51.4760506921621
1978-04-01	51.8186859655755
1978-05-01	51.7197802516841
1978-06-01	51.3930964851789
1978-07-01	51.4568164799975
1978-08-01	51.7508775256701
1978-09-01	51.8899350918050
1978-10-01	51.8423370139775
1978-11-01	51.9444534675265
1978-12-01	51.6913633605072
1979-01-01	48.6218230362205
1979-02-01	51.0370944727930
1979-03-01	52.1653371856831
1979-04-01	52.0338981793599
1979-05-01	51.2096714992877
1979-06-01	51.5880532827020
1979-07-01	51.9136606135101
1979-08-01	51.4256349482923
1979-09-01	52.4967379375964
1979-10-01	53.4223793539356
1979-11-01	53.2144565278294
1979-12-01	52.5371707777413
1980-01-01	49.6031592164007
1980-02-01	52.5720385733747
1980-03-01	53.9357551730205
1980-04-01	52.9193875617035
1980-05-01	52.8167151110287
1980-06-01	53.2335264451840
1980-07-01	53.5676543983096
1980-08-01	53.3004178698002
1980-09-01	53.8549644357996
1980-10-01	53.2540740998980
1980-11-01	53.5489265972727
1980-12-01	53.0580309373892
1981-01-01	49.9909979819628
1981-02-01	52.5900229354127
1981-03-01	54.2866367648481
1981-04-01	54.0403896172682
1981-05-01	53.7474702588927
1981-06-01	53.6245229667613
1981-07-01	53.6731130489606
1981-08-01	53.5401349896979
1981-09-01	54.9492569150902
1981-10-01	54.6889242596985
1981-11-01	54.6120227032923
1981-12-01	53.8601795773445
1982-01-01	50.9343380386926
1982-02-01	53.5641672608876
1982-03-01	55.0118537582904
1982-04-01	53.8810431295949
1982-05-01	54.0230732669230
1982-06-01	54.0402000972369
1982-07-01	54.1876375033183
1982-08-01	54.0264327387703
1982-09-01	54.8547971120448
1982-10-01	54.7167108644976
1982-11-01	54.6574298906209
1982-12-01	54.1045634596963
1983-01-01	50.4102590314398
1983-02-01	53.8516216330190
1983-03-01	55.2885632812465
1983-04-01	53.6812347069035
1983-05-01	54.2627237489252
1983-06-01	53.8886442449800
1983-07-01	54.0467685088406
1983-08-01	53.5059426189829
1983-09-01	54.9732892049603
1983-10-01	54.0523704594656
1983-11-01	54.5744075024260
1983-12-01	54.1716380149977
1984-01-01	50.8360199136182
1984-02-01	53.7768689760236
1984-03-01	56.0222867149717
1984-04-01	55.7314556935470
1984-05-01	55.2294043046106
1984-06-01	55.7060283045202
1984-07-01	55.4024112028810
1984-08-01	55.0069094972472
1984-09-01	56.7176684801915
1984-10-01	56.2811193141222
1984-11-01	56.5111663283941
1984-12-01	56.3654776279424
1985-01-01	52.9030104068755
1985-02-01	56.5102848678418
1985-03-01	58.1119765995414
1985-04-01	56.4453767767224
1985-05-01	57.1041291933536
1985-06-01	57.2150258517852
1985-07-01	57.3967874807288
1985-08-01	57.1452025571173
1985-09-01	58.1083975636972
1985-10-01	57.8238011393418
1985-11-01	59.3884333788211
1985-12-01	58.9022996684328
1986-01-01	55.6524894238732
1986-02-01	59.1627719327983
1986-03-01	60.7654280013227
1986-04-01	60.7867762924324
1986-05-01	60.7932445706642
1986-06-01	60.6846952333623
1986-07-01	61.3910152408140
1986-08-01	60.3240080235230
1986-09-01	61.5429535856765
1986-10-01	61.4961377049193
1986-11-01	61.4248939914981
1986-12-01	61.0300426180711
1987-01-01	57.4404264622438
1987-02-01	60.8075603791459
1987-03-01	62.6759996242606
1987-04-01	62.1482989918674
1987-05-01	61.9087639171475
1987-06-01	61.7077755375709
1987-07-01	61.6482882449900
1987-08-01	61.6763728499320
1987-09-01	62.3334810312908
1987-10-01	61.8231633842219
1987-11-01	62.0688932883122
1987-12-01	62.4325057099056
1988-01-01	59.8005623606049
1988-02-01	62.2412812099179
1988-03-01	64.2272227196739
1988-04-01	64.0945858438509
1988-05-01	63.7320661484100
1988-06-01	63.5410688424134
1988-07-01	62.7677766737445
1988-08-01	63.0410385765077
1988-09-01	64.8109019392858
1988-10-01	63.5900936631282
1988-11-01	64.0897964543110
1988-12-01	64.0696470552316
1989-01-01	61.1372559896000
1989-02-01	63.6009803599024
1989-03-01	64.9676603361060
1989-04-01	65.2346995457540
1989-05-01	65.6605920345937
1989-06-01	65.2119058586792
1989-07-01	65.1655784065429
1989-08-01	65.3392878911135
1989-09-01	66.8855283462967
1989-10-01	65.7249971425668
1989-11-01	67.0556485532460
1989-12-01	66.7137611544907
1990-01-01	63.2573322464503
1990-02-01	66.6329682647630
1990-03-01	67.6237908159300
1990-04-01	67.1460932640216
1990-05-01	67.5302049699592
1990-06-01	67.6039562528860
1990-07-01	66.8748671904204
1990-08-01	66.5866795558462
1990-09-01	67.6157325684089
1990-10-01	66.6752016066347
1990-11-01	66.9675476677953
1990-12-01	66.8914131360984
1991-01-01	63.9914070914568
1991-02-01	66.9403529283200
1991-03-01	67.8228928125359
1991-04-01	68.1946138793031
1991-05-01	67.8859392572275
1991-06-01	67.4438904389255
1991-07-01	66.6156052105915
1991-08-01	67.1624639529046
1991-09-01	68.2802232419934
1991-10-01	66.5393201543309
1991-11-01	66.8735001777076
1991-12-01	66.9388962543989
1992-01-01	64.8648407886055
1992-02-01	67.3908857949470
1992-03-01	68.1053168111707
1992-04-01	67.4165949091925
1992-05-01	67.3040657802754
1992-06-01	67.6147772057027
1992-07-01	67.2919991054039
1992-08-01	67.2107223973126
1992-09-01	68.2364453241969
1992-10-01	67.4011605339184
1992-11-01	67.2846134371170
1992-12-01	67.2769209270021
1993-01-01	64.6443563923401
1993-02-01	66.6692663400876
1993-03-01	67.8782276078210
1993-04-01	66.4825628577785
1993-05-01	66.9998344924390
1993-06-01	66.9857555405200
1993-07-01	66.6012898656955
1993-08-01	67.0116826160124
1993-09-01	68.2865826595175
1993-10-01	67.9455799930599
1993-11-01	68.2850445637860
1993-12-01	67.8096799496090
1994-01-01	64.8079257019854
1994-02-01	67.5210368444073
1994-03-01	68.0026975062688
1994-04-01	67.2940386729831
1994-05-01	67.6661810008173
1994-06-01	67.7078828680754
1994-07-01	68.0058852300332
1994-08-01	67.3794506585215
1994-09-01	69.6595828130838
1994-10-01	67.9920653112932
1994-11-01	68.3765397399040
1994-12-01	68.4450102325601
1995-01-01	65.9298828003509
1995-02-01	68.2657819442824
1995-03-01	69.1033951512003
1995-04-01	68.6719129210725
1995-05-01	69.0835221495273
1995-06-01	69.4721293478814
1995-07-01	69.4455241575620
1995-08-01	69.0969097468836
1995-09-01	69.9649384377866
1995-10-01	69.2954017669676
1995-11-01	70.1727957699291
1995-12-01	69.6123831664739
1996-01-01	66.8506681361736
1996-02-01	69.1922800116691
1996-03-01	69.6655840242506
1996-04-01	68.5818096973028
1996-05-01	69.0484840923427
1996-06-01	68.9296090217654
1996-07-01	68.9857335511800
1996-08-01	68.8942506270300
1996-09-01	70.1424297558497
1996-10-01	69.2523555751520
1996-11-01	69.3277808830068
1996-12-01	69.4868554723954
1997-01-01	67.3300639908667
1997-02-01	69.9553174410750
1997-03-01	69.5089146728846
1997-04-01	69.5638746471485
1997-05-01	69.4157116069470
1997-06-01	69.3081971503402
1997-07-01	69.3943454319981
1997-08-01	68.6906989677174
1997-09-01	70.5508155707736
1997-10-01	69.3016019311979
1997-11-01	69.5858681151838
1997-12-01	69.1978735293510
1998-01-01	66.6129897028755
1998-02-01	69.0464791907082
1998-03-01	69.5151181510838
1998-04-01	69.3766278183082
1998-05-01	69.2755525842325
1998-06-01	69.6223916471008
1998-07-01	69.5184460106830
1998-08-01	69.3802693184192
1998-09-01	70.6473641039413
1998-10-01	69.8005181415132
1998-11-01	69.3949931063171
1998-12-01	69.5980530760642
1999-01-01	66.9964849130291
1999-02-01	69.0979687002240
1999-03-01	69.3337275934740
1999-04-01	69.1205528362495
1999-05-01	69.3015987100735
1999-06-01	69.4728017316255
1999-07-01	69.3939846502228
1999-08-01	69.0203109730526
1999-09-01	70.6520668900017
1999-10-01	69.8168519805420
1999-11-01	69.8867727905075
1999-12-01	70.4480477224206
2000-01-01	67.5921980525632
2000-02-01	69.9252620350151
2000-03-01	70.5249509949552
2000-04-01	70.6602997652536
2000-05-01	70.4212613645062
2000-06-01	70.9462249440766
2000-07-01	71.1148347180930
2000-08-01	70.7551333080684
2000-09-01	72.0249455819587
2000-10-01	70.6072194466690
2000-11-01	70.3497520748618
2000-12-01	70.5983276132288
2001-01-01	68.4496395501518
2001-02-01	70.7060702270627
2001-03-01	71.0076243017912
2001-04-01	71.9208252518116
2001-05-01	71.4539032105932
2001-06-01	71.6655626735100
2001-07-01	71.1176136038080
2001-08-01	71.2044968080979
2001-09-01	72.1383690465867
2001-10-01	71.3840861017851
2001-11-01	71.2537455570045
2001-12-01	71.1039961680226
2002-01-01	69.9596389629835
2002-02-01	70.9849832357781
2002-03-01	71.3381226792190
2002-04-01	70.9752560280079
2002-05-01	70.9641969412995
2002-06-01	71.7759086668719
2002-07-01	71.3901575540128
2002-08-01	71.6623958372460
2002-09-01	72.9374796032196
2002-10-01	71.6514424620358
2002-11-01	72.4361653172008
2002-12-01	72.6701011162297
2003-01-01	71.4561576164401
2003-02-01	73.0814285122626
2003-03-01	72.9517705468070
2003-04-01	72.8279090098189
2003-05-01	73.0468717173648
2003-06-01	72.8377204268612
2003-07-01	72.0425835380436
2003-08-01	72.1293901530460
2003-09-01	73.4794459042126
2003-10-01	72.0994023657667
2003-11-01	72.0085793262025
2003-12-01	71.9387140723125
2004-01-01	70.1249652664412
2004-02-01	71.5827828983588
2004-03-01	71.9146619905706
2004-04-01	71.6275724299196
2004-05-01	71.8801940902227
2004-06-01	71.8832148567435
2004-07-01	71.6003444827564
2004-08-01	71.7527699113256
2004-09-01	72.7006919223711
2004-10-01	72.2738216153312
2004-11-01	72.4079235731124
2004-12-01	72.5524884629433
2005-01-01	71.2404733401378
2005-02-01	73.3152948522649
2005-03-01	73.9961898982115
2005-04-01	73.6023977396809
2005-05-01	74.1489933714165
2005-06-01	74.1099902972058
2005-07-01	73.6276315816812
2005-08-01	73.6644608583292
2005-09-01	74.6709925255010
2005-10-01	73.9067630712616
2005-11-01	73.7906617540615
2005-12-01	74.0410411706352
2006-01-01	72.4063972688761
2006-02-01	73.6363699519531
2006-03-01	74.1670889470434
2006-04-01	74.0103671141775
2006-05-01	74.6938679473329
2006-06-01	74.6387214328716
2006-07-01	74.0809762008078
2006-08-01	73.9721567014549
2006-09-01	75.5355895471101
2006-10-01	74.0852997277782
2006-11-01	74.3574903598423
2006-12-01	74.9554701728244
2007-01-01	72.8963106874617
2007-02-01	74.6989919635163
2007-03-01	75.0176336767692
2007-04-01	74.3766077796886
2007-05-01	74.6176559466320
2007-06-01	74.9499229515082
2007-07-01	74.5747033239135
2007-08-01	74.5339956748568
2007-09-01	75.9677497658001
2007-10-01	75.1381957074728
2007-11-01	75.1620439220921
2007-12-01	75.4831661530820
2008-01-01	73.5086764768739
2008-02-01	75.3898703437786
2008-03-01	75.5439860037841
2008-04-01	75.4948488150082
2008-05-01	75.4759493631464
2008-06-01	75.5976519309401
2008-07-01	75.2514247609466
2008-08-01	75.2514755951974
2008-09-01	75.9984365544635
2008-10-01	75.5002912008858
2008-11-01	75.5649021275846
2008-12-01	75.9629786746235
2009-01-01	74.4038938615681
2009-02-01	76.5166350422784
2009-03-01	76.2619559048663
2009-04-01	76.0121815241005
2009-05-01	76.2359220843049
2009-06-01	75.9011725023426
2009-07-01	75.4892101067255
2009-08-01	75.1038305580603
2009-09-01	76.0934727881582
2009-10-01	75.0525471139324
2009-11-01	74.6588793620397
2009-12-01	74.8642096901478
2010-01-01	73.5832959986429
2010-02-01	74.5759498026082
2010-03-01	74.7449930134871
2010-04-01	74.7689309133979
2010-05-01	74.9998483564189
2010-06-01	75.3783590802907
2010-07-01	75.1593157061288
2010-08-01	75.1439984829732
2010-09-01	76.3296716835869
2010-10-01	75.7057636809732
2010-11-01	75.7089238332839
2010-12-01	75.6400190114068
2011-01-01	74.0951469320886
2011-02-01	75.2806300729241
2011-03-01	76.0074497961688
2011-04-01	75.5869244906112
2011-05-01	75.8423862557527
2011-06-01	75.9149242797190
2011-07-01	75.7646117571695
2011-08-01	75.2510828607057
2011-09-01	76.6106130216403
2011-10-01	75.6840711575029
2011-11-01	75.7127869366558
2011-12-01	75.8744672521909
2012-01-01	73.7534055869449
2012-02-01	75.3282749729781
2012-03-01	76.1131562681341
2012-04-01	75.3905187622961
2012-05-01	76.0039026905026
2012-06-01	75.5777534803944
2012-07-01	75.4782634888000
2012-08-01	75.1997401767241
2012-09-01	76.7767907180970
2012-10-01	75.7011701110891
2012-11-01	75.8276353860548
2012-12-01	75.6318055904320
2013-01-01	74.3582400827972
2013-02-01	76.0330051485303
2013-03-01	76.3365135405240
2013-04-01	76.1666641463096
2013-05-01	75.9924798027987
2013-06-01	76.2156192502330
2013-07-01	75.5158032274188
2013-08-01	75.2826655039727
2013-09-01	76.5101542957599
2013-10-01	75.9363907962031
2013-11-01	75.6120930134384
2013-12-01	75.6692425430032
2014-01-01	74.4291365641576
2014-02-01	76.1984400924698
2014-03-01	76.4683205856251
2014-04-01	75.8658542781803
2014-05-01	76.0612505281995
2014-06-01	76.0227620497271
2014-07-01	75.7299875189886
2014-08-01	76.0770425689420
2014-09-01	75.9934933579072
2014-10-01	75.9348396255263
2014-11-01	75.5591520263996
2014-12-01	76.0985923981131
2015-01-01	74.6271179981705
2015-02-01	76.8401437195326
2015-03-01	76.6933630740803
2015-04-01	76.5229520680100
2015-05-01	76.8650215852636
2015-06-01	76.6038421916634
2015-07-01	76.5571799032818
2015-08-01	76.6411861901000
2015-09-01	76.7556474575267
2015-10-01	76.6611747349315
2015-11-01	77.1633191247377
2015-12-01	76.9872752996736
2016-01-01	75.5667152657294
2016-02-01	77.4514871549898
2016-03-01	77.0845026315952
2016-04-01	76.8777146458747
2016-05-01	77.1878429093024
2016-06-01	77.1294762587769
2016-07-01	76.9408630652810
2016-08-01	76.4841427010175
2016-09-01	76.8808847217014
2016-10-01	76.5952627978149
2016-11-01	77.1996880127636
2016-12-01	77.0985985118021
2017-01-01	75.3241194414486
2017-02-01	77.3677952384893
2017-03-01	77.6486087786293
2017-04-01	77.6952995828567
2017-05-01	77.7331378572020
2017-06-01	77.8111995910269
2017-07-01	77.4920414754084
2017-08-01	77.5850612899150
2017-09-01	77.8429325215726
2017-10-01	78.0374562488476
2017-11-01	78.6185817184484
2017-12-01	79.0795214615398
2018-01-01	77.4943906899192
2018-02-01	79.0529410189088
2018-03-01	79.0678389066478
2018-04-01	78.9460572770826
2018-05-01	78.7738417810694
2018-06-01	78.8884388381645
2018-07-01	78.4645237419626
2018-08-01	78.2869621595020
2018-09-01	78.3124452756121