Month	Percent
1968-01-01	46.1386138613861
1968-02-01	46.3825569871160
1968-03-01	41.2871287128713
1968-04-01	39.8414271555996
1968-05-01	39.3069306930693
1968-06-01	38.7128712871287
1968-07-01	38.5375494071146
1968-08-01	40.0990099009901
1968-09-01	41.8235877106046
1968-10-01	41.4271555996036
1968-11-01	42.5024826216485
1968-12-01	44.1351888667992
1969-01-01	46.2686567164179
1969-02-01	46.9651741293532
1969-03-01	42.6147704590818
1969-04-01	40.8000000000000
1969-05-01	40.5594405594406
1969-06-01	40.6593406593407
1969-07-01	39.8601398601399
1969-08-01	41.5169660678643
1969-09-01	43.0569430569431
1969-10-01	43.0569430569431
1969-11-01	43.7125748502994
1969-12-01	44.3668993020937
1970-01-01	46.4606181455633
1970-02-01	46.7597208374875
1970-03-01	41.5920398009950
1970-04-01	40.5970149253731
1970-05-01	40.3177755710030
1970-06-01	40.5163853028798
1970-07-01	39.3849206349206
1970-08-01	41.0307234886026
1970-09-01	41.8397626112760
1970-10-01	42.8430404738401
1970-11-01	43.2806324110672
1970-12-01	43.1256181998022
1971-01-01	44.0276406712734
1971-02-01	43.4911242603550
1971-03-01	40.5697445972495
1971-04-01	39.0793339862880
1971-05-01	37.2184133202742
1971-06-01	38.5294117647059
1971-07-01	39.0196078431373
1971-08-01	40.0196656833825
1971-09-01	41.3962635201573
1971-10-01	41.8145956607495
1971-11-01	42.2924901185771
1971-12-01	42.3611111111111
1972-01-01	43.8683948155533
1972-02-01	43.6991869918699
1972-03-01	41.2423625254582
1972-04-01	40.1430030643514
1972-05-01	40.4298874104401
1972-06-01	40.3076923076923
1972-07-01	40.0817995910020
1972-08-01	41.6410256410256
1972-09-01	41.8556701030928
1972-10-01	43.2432432432432
1972-11-01	44.8383733055266
1972-12-01	44.6652719665272
1973-01-01	46.4773922187171
1973-02-01	46.4059196617336
1973-03-01	44.5387062566278
1973-04-01	42.3404255319149
1973-05-01	41.8803418803419
1973-06-01	42.4437299035370
1973-07-01	41.7653390742734
1973-08-01	43.6893203883495
1973-09-01	45.2380952380952
1973-10-01	45.7700650759219
1973-11-01	46.5723612622416
1973-12-01	47.2707423580786
1974-01-01	49.1228070175439
1974-02-01	48.7348734873487
1974-03-01	45.0221238938053
1974-04-01	44.3458980044346
1974-05-01	44.3333333333333
1974-06-01	45.2115812917595
1974-07-01	45.6278026905830
1974-08-01	47.0258136924804
1974-09-01	47.7477477477477
1974-10-01	47.7375565610860
1974-11-01	48.9216799091941
1974-12-01	49.8861047835991
1975-01-01	51.7714285714286
1975-02-01	52.1788990825688
1975-03-01	49.8273878020714
1975-04-01	48.3833718244804
1975-05-01	47.7456647398844
1975-06-01	50.0000000000000
1975-07-01	48.6078886310905
1975-08-01	49.7089639115250
1975-09-01	50.2917152858810
1975-10-01	49.3582263710618
1975-11-01	49.8241500586166
1975-12-01	49.4117647058824
1976-01-01	51.4723203769140
1976-02-01	52.3640661938534
1976-03-01	49.8815165876777
1976-04-01	49.8812351543943
1976-05-01	51.1269276393832
1976-06-01	50.7125890736342
1976-07-01	50.6571087216248
1976-08-01	51.1933174224344
1976-09-01	51.8474374255066
1976-10-01	53.9473684210526
1976-11-01	53.3492822966507
1976-12-01	53.1175059952038
1977-01-01	55.5956678700361
1977-02-01	55.8504221954162
1977-03-01	52.1791767554479
1977-04-01	53.3333333333333
1977-05-01	53.5757575757576
1977-06-01	52.7912621359223
1977-07-01	52.4969549330085
1977-08-01	53.0487804878049
1977-09-01	53.4713763702802
1977-10-01	55.9756097560976
1977-11-01	55.2439024390244
1977-12-01	54.8229548229548
1978-01-01	56.8986568986569
1978-02-01	56.9155446756426
1978-03-01	54.1104294478528
1978-04-01	51.9018404907975
1978-05-01	51.7156862745098
1978-06-01	53.0637254901961
1978-07-01	53.9877300613497
1978-08-01	55.5282555282555
1978-09-01	56.0885608856089
1978-10-01	56.3882063882064
1978-11-01	56.6871165644172
1978-12-01	56.8265682656827
1979-01-01	58.7945879458795
1979-02-01	58.7945879458795
1979-03-01	56.5805658056580
1979-04-01	55.0368550368550
1979-05-01	53.4969325153374
1979-06-01	52.8834355828221
1979-07-01	53.3169533169533
1979-08-01	55.1045510455105
1979-09-01	57.9141104294478
1979-10-01	56.5644171779141
1979-11-01	57.3006134969325
1979-12-01	57.4051407588739
1980-01-01	59.0686274509804
1980-02-01	60.5651105651106
1980-03-01	57.4233128834356
1980-04-01	56.3725490196078
1980-05-01	55.8679706601467
1980-06-01	54.7008547008547
1980-07-01	54.7677261613692
1980-08-01	56.2881562881563
1980-09-01	57.3511543134872
1980-10-01	57.1601941747573
1980-11-01	57.4029126213592
1980-12-01	57.1601941747573
1981-01-01	58.9307411907655
1981-02-01	59.5121951219512
1981-03-01	56.5323565323565
1981-04-01	54.9450549450549
1981-05-01	55.2019583843329
1981-06-01	53.6764705882353
1981-07-01	54.1104294478528
1981-08-01	55.7739557739558
1981-09-01	57.2481572481572
1981-10-01	57.6167076167076
1981-11-01	57.2481572481572
1981-12-01	58.0368098159509
1982-01-01	60.0000000000000
1982-02-01	60.0000000000000
1982-03-01	56.9682151589242
1982-04-01	53.9119804400978
1982-05-01	54.3902439024390
1982-06-01	55.7177615571776
1982-07-01	55.5420219244823
1982-08-01	56.1212121212121
1982-09-01	56.9528415961306
1982-10-01	56.9879518072289
1982-11-01	56.4380264741276
1982-12-01	56.2500000000000
1983-01-01	57.9326923076923
1983-02-01	58.2232893157263
1983-03-01	56.2350119904077
1983-04-01	54.0767386091127
1983-05-01	53.4131736526946
1983-06-01	53.4606205250597
1983-07-01	54.5887961859356
1983-08-01	56.0047562425684
1983-09-01	56.7022538552788
1983-10-01	56.6863905325444
1983-11-01	56.6193853427896
1983-12-01	57.0247933884298
1984-01-01	58.3924349881797
1984-02-01	58.7677725118483
1984-03-01	57.9196217494090
1984-04-01	54.7703180212014
1984-05-01	54.5882352941176
1984-06-01	54.9824150058617
1984-07-01	55.8548009367682
1984-08-01	56.3593932322054
1984-09-01	56.0606060606061
1984-10-01	56.7441860465116
1984-11-01	57.3255813953488
1984-12-01	57.0765661252900
1985-01-01	59.2592592592593
1985-02-01	59.7914252607184
1985-03-01	58.0046403712297
1985-04-01	56.0046189376443
1985-05-01	55.7603686635945
1985-06-01	55.9770114942529
1985-07-01	55.8620689655172
1985-08-01	56.8649885583524
1985-09-01	57.3546180159635
1985-10-01	57.6309794988610
1985-11-01	57.4516496018202
1985-12-01	58.0022701475596
1986-01-01	59.5913734392736
1986-02-01	59.9773242630386
1986-03-01	57.9661016949152
1986-04-01	55.3672316384181
1986-05-01	55.5180180180180
1986-06-01	55.5056179775281
1986-07-01	55.3310886644220
1986-08-01	56.5363128491620
1986-09-01	57.4136008918618
1986-10-01	57.3333333333333
1986-11-01	57.2062084257206
1986-12-01	58.6474501108648
1987-01-01	60.5993340732520
1987-02-01	60.6666666666667
1987-03-01	58.0752212389380
1987-04-01	55.6291390728477
1987-05-01	56.0439560439560
1987-06-01	55.9693318729463
1987-07-01	55.9080962800875
1987-08-01	56.0523446019629
1987-09-01	57.7342047930283
1987-10-01	58.3061889250814
1987-11-01	57.6839826839827
1987-12-01	58.4233261339093
1988-01-01	60.8414239482201
1988-02-01	61.7297297297297
1988-03-01	58.7284482758621
1988-04-01	55.4838709677419
1988-05-01	55.4721030042918
1988-06-01	55.2462526766595
1988-07-01	56.1965811965812
1988-08-01	56.9296375266524
1988-09-01	58.3244962884412
1988-10-01	58.3686440677966
1988-11-01	57.7167019027484
1988-12-01	58.2278481012658
1989-01-01	60.6540084388186
1989-02-01	60.6540084388186
1989-03-01	58.5699263932702
1989-04-01	55.4621848739496
1989-05-01	55.8823529411765
1989-06-01	55.5439330543933
1989-07-01	55.6485355648536
1989-08-01	56.8893528183716
1989-09-01	58.0645161290322
1989-10-01	57.5285565939772
1989-11-01	57.0093457943925
1989-12-01	57.6763485477178
1990-01-01	60.1036269430052
1990-02-01	59.5634095634096
1990-03-01	57.9439252336449
1990-04-01	55.4404145077720
1990-05-01	54.0847983453981
1990-06-01	54.4984488107549
1990-07-01	54.5643153526971
1990-08-01	56.2564632885212
1990-09-01	55.9339525283798
1990-10-01	55.0155118924509
1990-11-01	56.1983471074380
1990-12-01	56.4049586776860
1991-01-01	58.4536082474227
1991-02-01	58.8842975206612
1991-03-01	55.3497942386831
1991-04-01	54.0429887410440
1991-05-01	53.0071355759429
1991-06-01	52.2889114954222
1991-07-01	52.5406504065041
1991-08-01	53.4954407294833
1991-09-01	53.7840565085772
1991-10-01	54.4904137235116
1991-11-01	54.5913218970737
1991-12-01	54.9949545913219
1992-01-01	56.7512690355330
1992-02-01	55.9063136456212
1992-03-01	54.3788187372709
1992-04-01	51.6819571865443
1992-05-01	52.0366598778004
1992-06-01	52.9531568228106
1992-07-01	50.9183673469388
1992-08-01	51.7838939857288
1992-09-01	53.3604887983707
1992-10-01	52.8513238289206
1992-11-01	52.6958290946083
1992-12-01	53.2110091743119
1993-01-01	56.0776302349336
1993-02-01	55.4759467758444
1993-03-01	53.2175689479060
1993-04-01	51.4314928425358
1993-05-01	51.2269938650307
1993-06-01	51.5337423312883
1993-07-01	50.0000000000000
1993-08-01	51.3319672131148
1993-09-01	53.1218014329580
1993-10-01	51.2295081967213
1993-11-01	51.4871794871795
1993-12-01	51.8974358974359
1994-01-01	54.5174537987680
1994-02-01	55.0619834710744
1994-03-01	53.0443756449948
1994-04-01	50.3611971104231
1994-05-01	50.1033057851240
1994-06-01	50.6707946336429
1994-07-01	49.9481865284974
1994-08-01	50.4149377593361
1994-09-01	51.9668737060041
1994-10-01	52.0207253886010
1994-11-01	51.7634854771784
1994-12-01	52.6479750778816
1995-01-01	54.0062434963580
1995-02-01	54.7544409613375
1995-03-01	53.2426778242678
1995-04-01	51.1506276150628
1995-05-01	51.0994764397906
1995-06-01	50.6289308176101
1995-07-01	49.6842105263158
1995-08-01	50.4741833508957
1995-09-01	51.7386722866175
1995-10-01	51.5279241306639
1995-11-01	51.6367476240760
1995-12-01	53.0158730158730
1996-01-01	53.1283138918346
1996-02-01	53.0916844349680
1996-03-01	52.4520255863540
1996-04-01	49.9466382070438
1996-05-01	49.7863247863248
1996-06-01	49.1961414790997
1996-07-01	49.4079655543595
1996-08-01	49.7303128371090
1996-09-01	50.7011866235167
1996-10-01	51.5675675675676
1996-11-01	51.8438177874187
1996-12-01	50.9229098805646
1997-01-01	52.1311475409836
1997-02-01	53.0769230769231
1997-03-01	51.5384615384615
1997-04-01	49.9449944994500
1997-05-01	48.5682819383260
1997-06-01	48.6754966887417
1997-07-01	48.7236403995560
1997-08-01	49.3868450390190
1997-09-01	50.0556173526140
1997-10-01	50.7246376811594
1997-11-01	51.8435754189944
1997-12-01	51.6778523489933
1998-01-01	53.7078651685393
1998-02-01	54.1760722347630
1998-03-01	52.0316027088036
1998-04-01	50.3954802259887
1998-05-01	49.5464852607710
1998-06-01	49.2622020431328
1998-07-01	49.8289623717218
1998-08-01	50.1144164759725
1998-09-01	50.5154639175258
1998-10-01	50.3440366972477
1998-11-01	51.0932105868815
1998-12-01	51.9031141868512
1999-01-01	53.2947976878613
1999-02-01	54.4186046511628
1999-03-01	53.0232558139535
1999-04-01	51.3986013986014
1999-05-01	50.0584795321637
1999-06-01	49.7658079625293
1999-07-01	51.0011778563015
1999-08-01	51.4150943396226
1999-09-01	52.7186761229314
1999-10-01	53.1990521327014
1999-11-01	53.2699167657551
1999-12-01	52.3809523809524
2000-01-01	54.7732696897375
2000-02-01	55.6354916067146
2000-03-01	53.0612244897959
2000-04-01	51.5587529976019
2000-05-01	49.7590361445783
2000-06-01	50.6634499396864
2000-07-01	51.5151515151515
2000-08-01	52.0048602673147
2000-09-01	53.6496350364964
2000-10-01	52.9197080291971
2000-11-01	52.1951219512195
2000-12-01	53.0562347188264
2001-01-01	55.4601226993865
2001-02-01	56.3501849568434
2001-03-01	54.2540073982737
2001-04-01	51.2345679012346
2001-05-01	50.5562422744128
2001-06-01	51.7967781908302
2001-07-01	51.7456359102244
2001-08-01	51.7500000000000
2001-09-01	54.6250000000000
2001-10-01	54.4430538172716
2001-11-01	53.8944723618090
2001-12-01	54.6482412060302
2002-01-01	56.4393939393939
2002-02-01	56.2897077509530
2002-03-01	54.0025412960610
2002-04-01	51.8424396442186
2002-05-01	52.6785714285714
2002-06-01	53.0612244897959
2002-07-01	52.3017902813299
2002-08-01	50.9627727856226
2002-09-01	53.7869062901155
2002-10-01	54.4401544401544
2002-11-01	55.5412371134021
2002-12-01	55.6847545219638
2003-01-01	56.7183462532300
2003-02-01	56.4369310793238
2003-03-01	54.5454545454545
2003-04-01	52.6657997399220
2003-05-01	52.3498694516971
2003-06-01	53.8562091503268
2003-07-01	54.8556430446194
2003-08-01	53.9473684210526
2003-09-01	54.5335085413929
2003-10-01	55.2631578947368
2003-11-01	55.3359683794466
2003-12-01	56.1589403973510
2004-01-01	58.2228116710875
2004-02-01	58.8000000000000
2004-03-01	56.9906790945406
2004-04-01	54.1944074567244
2004-05-01	54.6061415220294
2004-06-01	55.6300268096515
2004-07-01	54.7043010752688
2004-08-01	54.0431266846361
2004-09-01	55.2702702702703
2004-10-01	55.0744248985115
2004-11-01	55.8265582655827
2004-12-01	55.9782608695652
2005-01-01	58.7193460490463
2005-02-01	59.5075239398085
2005-03-01	57.7291381668947
2005-04-01	55.0684931506849
2005-05-01	55.2054794520548
2005-06-01	54.6703296703297
2005-07-01	54.2068965517241
2005-08-01	54.4321329639889
2005-09-01	54.0166204986150
2005-10-01	54.1551246537396
2005-11-01	54.1666666666667
2005-12-01	54.4568245125348
2006-01-01	57.1030640668524
2006-02-01	57.2829131652661
2006-03-01	56.3814866760168
2006-04-01	53.9971949509116
2006-05-01	54.0730337078652
2006-06-01	54.2897327707454
2006-07-01	55.4301833568406
2006-08-01	54.0311173974540
2006-09-01	54.3140028288543
2006-10-01	54.4680851063830
2006-11-01	55.9659090909091
2006-12-01	56.8990042674253
2007-01-01	58.0829756795422
2007-02-01	57.3275862068966
2007-03-01	55.7471264367816
2007-04-01	52.1551724137931
2007-05-01	52.5107604017217
2007-06-01	52.8057553956835
2007-07-01	54.8340548340548
2007-08-01	54.9927641099855
2007-09-01	54.5586107091172
2007-10-01	54.5586107091172
2007-11-01	55.2975326560232
2007-12-01	57.2052401746725
2008-01-01	59.7667638483965
2008-02-01	58.9181286549708
2008-03-01	57.3313782991202
2008-04-01	53.8123167155425
2008-05-01	52.2760646108664
2008-06-01	54.1850220264317
2008-07-01	55.6047197640118
2008-08-01	53.1757754800591
2008-09-01	54.8816568047337
2008-10-01	55.5555555555556
2008-11-01	55.5720653789004
2008-12-01	57.1428571428572
2009-01-01	59.1044776119403
2009-02-01	59.2537313432836
2009-03-01	58.6826347305389
2009-04-01	55.7548579970105
2009-05-01	54.1916167664671
2009-06-01	55.7057057057057
2009-07-01	56.7771084337349
2009-08-01	56.2594268476621
2009-09-01	57.3152337858220
2009-10-01	57.6399394856278
2009-11-01	58.6363636363636
2009-12-01	59.8784194528875
2010-01-01	60.2739726027397
2010-02-01	60.6106870229008
2010-03-01	58.2568807339450
2010-04-01	56.9678407350689
2010-05-01	56.5084226646248
2010-06-01	56.2021439509954
2010-07-01	57.5384615384615
2010-08-01	56.7901234567901
2010-09-01	57.7399380804954
2010-10-01	57.5851393188854
2010-11-01	58.5669781931464
2010-12-01	59.0062111801242
2011-01-01	61.2149532710280
2011-02-01	61.3707165109034
2011-03-01	58.7579617834395
2011-04-01	55.2547770700637
2011-05-01	55.3600000000000
2011-06-01	55.2166934189406
2011-07-01	56.4102564102564
2011-08-01	57.0967741935484
2011-09-01	58.6477987421384
2011-10-01	58.7401574803150
2011-11-01	58.9905362776025
2011-12-01	59.0551181102362
2012-01-01	60.7255520504732
2012-02-01	60.6635071090047
2012-03-01	60.4430379746835
2012-04-01	56.8037974683544
2012-05-01	57.0522979397781
2012-06-01	57.0522979397781
2012-07-01	57.0522979397781
2012-08-01	57.6190476190476
2012-09-01	57.8696343402226
2012-10-01	57.3926868044515
2012-11-01	58.8235294117647
2012-12-01	60.5723370429253
2013-01-01	60.0318471337580
2013-02-01	60.3833865814696
2013-03-01	60.2236421725240
2013-04-01	56.3200000000000
2013-05-01	56.1600000000000
2013-06-01	57.1200000000000
2013-07-01	57.6923076923077
2013-08-01	56.1093247588424
2013-09-01	58.0800000000000
2013-10-01	59.2295345104334
2013-11-01	58.3333333333333
2013-12-01	60.0961538461538
2014-01-01	60.8346709470305
2014-02-01	59.9678456591640
2014-03-01	58.5209003215434
2014-04-01	56.5916398713826
2014-05-01	55.9485530546624
2014-06-01	56.5916398713826
2014-07-01	57.3954983922830
2014-08-01	56.2197092084006
2014-09-01	56.1996779388084
2014-10-01	58.4541062801932
2014-11-01	58.4541062801932
2014-12-01	58.7761674718196
2015-01-01	59.9033816425121
2015-02-01	59.6774193548387
2015-03-01	59.0982286634461
2015-04-01	57.2580645161290
2015-05-01	56.5217391304348
2015-06-01	57.0048309178744
2015-07-01	58.2258064516129
2015-08-01	56.8659127625202
2015-09-01	56.3607085346216
2015-10-01	55.8776167471820
2015-11-01	56.2700964630225
2015-12-01	58.0385852090032
2016-01-01	59.2295345104334
2016-02-01	58.2930756843800
2016-03-01	57.3954983922830
2016-04-01	54.1800643086817
2016-05-01	53.7720706260032
2016-06-01	53.2051282051282
2016-07-01	55.6089743589744
2016-08-01	55.6270096463022
2016-09-01	55.1446945337621
2016-10-01	53.6858974358974
2016-11-01	55.9294871794872
2016-12-01	55.6089743589744
2017-01-01	56.8690095846645
2017-02-01	59.2651757188498
2017-03-01	58.3732057416268
2017-04-01	54.2264752791069
2017-05-01	53.3439490445860
2017-06-01	53.1847133757962
2017-07-01	54.0540540540541
2017-08-01	55.3429027113238
2017-09-01	55.5732484076433
2017-10-01	55.9618441971383
2017-11-01	57.1656050955414
2017-12-01	55.5732484076433
2018-01-01	55.4140127388535
2018-02-01	56.6878980891720
2018-03-01	56.2101910828025
2018-04-01	53.1001589825119
2018-05-01	51.0333863275040
2018-06-01	50.5546751188590
2018-07-01	51.9047619047619
2018-08-01	51.9936204146730
2018-09-01	53.1001589825119