Month	Percent
1968-01-01	50.8525576730191
1968-02-01	51.6064257028112
1968-03-01	46.9346733668342
1968-04-01	43.7185929648241
1968-05-01	42.4120603015075
1968-06-01	44.3775100401606
1968-07-01	44.7791164658634
1968-08-01	43.8631790744467
1968-09-01	46.0221550855992
1968-10-01	47.1774193548387
1968-11-01	48.1331987891019
1968-12-01	49.4450050454087
1969-01-01	50.9109311740891
1969-02-01	52.3809523809524
1969-03-01	47.4164133738602
1969-04-01	45.5284552845528
1969-05-01	43.7436419125127
1969-06-01	44.9643947100712
1969-07-01	44.8065173116090
1969-08-01	44.8521916411825
1969-09-01	45.5193482688391
1969-10-01	46.9450101832994
1969-11-01	48.6238532110092
1969-12-01	49.8981670061100
1970-01-01	51.4256619144603
1970-02-01	50.5606523955148
1970-03-01	46.2321792260692
1970-04-01	45.0101832993890
1970-05-01	44.7046843177189
1970-06-01	44.7154471544716
1970-07-01	44.3540183112920
1970-08-01	44.9746192893401
1970-09-01	44.9848024316109
1970-10-01	46.2006079027356
1970-11-01	47.3150962512665
1970-12-01	47.3205257836198
1971-01-01	49.7477295660949
1971-02-01	50.4540867810293
1971-03-01	44.5674044265594
1971-04-01	43.6180904522613
1971-05-01	45.0351053159478
1971-06-01	44.8241206030151
1971-07-01	44.9246231155779
1971-08-01	46.3242698892246
1971-09-01	47.5277497477296
1971-10-01	47.9757085020243
1971-11-01	49.3914807302231
1971-12-01	50.6097560975610
1972-01-01	51.3292433537832
1972-02-01	50.9336099585062
1972-03-01	47.8623566214807
1972-04-01	48.0628272251309
1972-05-01	47.7987421383648
1972-06-01	48.7881981032666
1972-07-01	48.6373165618449
1972-08-01	48.8958990536278
1972-09-01	49.6304118268215
1972-10-01	49.5807127882600
1972-11-01	49.3150684931507
1972-12-01	50.3171247357294
1973-01-01	50.5319148936170
1973-02-01	51.4438502673797
1973-03-01	48.8721804511278
1973-04-01	48.7594390507012
1973-05-01	49.2957746478873
1973-06-01	47.9347826086956
1973-07-01	48.5807860262009
1973-08-01	50.3825136612022
1973-09-01	48.6842105263158
1973-10-01	49.0088105726872
1973-11-01	51.0520487264673
1973-12-01	53.2150776053215
1974-01-01	55.9151785714286
1974-02-01	55.4809843400447
1974-03-01	52.8683914510686
1974-04-01	50.9604519774011
1974-05-01	50.1698754246886
1974-06-01	51.5873015873016
1974-07-01	52.9142857142857
1974-08-01	52.5171624713959
1974-09-01	51.6129032258064
1974-10-01	51.6763005780347
1974-11-01	53.7834691501746
1974-12-01	55.0877192982456
1975-01-01	56.4402810304450
1975-02-01	56.9917743830787
1975-03-01	54.7169811320755
1975-04-01	52.8925619834711
1975-05-01	51.8912529550827
1975-06-01	52.7251184834123
1975-07-01	53.1026252983294
1975-08-01	53.2219570405728
1975-09-01	53.9473684210526
1975-10-01	54.4364508393285
1975-11-01	56.1445783132530
1975-12-01	55.5555555555556
1976-01-01	57.5757575757576
1976-02-01	58.0998781973203
1976-03-01	54.3345543345543
1976-04-01	53.5452322738386
1976-05-01	54.4675642594859
1976-06-01	56.1274509803922
1976-07-01	54.3665436654366
1976-08-01	54.5566502463054
1976-09-01	55.7336621454994
1976-10-01	56.1728395061728
1976-11-01	56.5594059405941
1976-12-01	56.6459627329192
1977-01-01	58.1569115815691
1977-02-01	58.0524344569288
1977-03-01	55.6946182728411
1977-04-01	52.3212045169385
1977-05-01	52.8301886792453
1977-06-01	54.0880503144654
1977-07-01	52.9634300126103
1977-08-01	54.4766708701135
1977-09-01	55.6257901390645
1977-10-01	56.5107458912769
1977-11-01	56.0050568900126
1977-12-01	55.5837563451777
1978-01-01	58.0808080808081
1978-02-01	58.7121212121212
1978-03-01	56.0050568900126
1978-04-01	53.9240506329114
1978-05-01	53.3501896333755
1978-06-01	52.5316455696202
1978-07-01	52.9113924050633
1978-08-01	53.7389100126743
1978-09-01	55.2030456852792
1978-10-01	56.1470215462611
1978-11-01	57.0342205323194
1978-12-01	56.6709021601016
1979-01-01	57.8880407124682
1979-02-01	58.5987261146497
1979-03-01	56.4331210191083
1979-04-01	54.1984732824428
1979-05-01	53.6895674300254
1979-06-01	53.9440203562341
1979-07-01	53.9440203562341
1979-08-01	53.5623409669211
1979-09-01	54.2675159235669
1979-10-01	55.9085133418043
1979-11-01	56.9796954314721
1979-12-01	58.4283903675539
1980-01-01	60.0508905852417
1980-02-01	60.7643312101911
1980-03-01	58.5241730279898
1980-04-01	56.1626429479034
1980-05-01	54.2566709021601
1980-06-01	53.4854245880862
1980-07-01	52.6649746192893
1980-08-01	52.9709228824273
1980-09-01	53.9141414141414
1980-10-01	55.7522123893805
1980-11-01	56.5491183879093
1980-12-01	57.3047858942066
1981-01-01	58.7121212121212
1981-02-01	59.4423320659062
1981-03-01	57.4873096446700
1981-04-01	54.1296060991105
1981-05-01	53.8853503184713
1981-06-01	53.2484076433121
1981-07-01	53.7772087067862
1981-08-01	54.5338441890166
1981-09-01	55.8823529411765
1981-10-01	57.1611253196931
1981-11-01	57.2343149807938
1981-12-01	57.3076923076923
1982-01-01	59.2071611253197
1982-02-01	60.0765306122449
1982-03-01	57.7608142493639
1982-04-01	55.4568527918782
1982-05-01	54.8101265822785
1982-06-01	54.4879898862200
1982-07-01	54.3037974683544
1982-08-01	55.2763819095477
1982-09-01	56.3909774436090
1982-10-01	56.5707133917397
1982-11-01	56.1250000000000
1982-12-01	56.6791510611735
1983-01-01	58.9263420724095
1983-02-01	58.6766541822722
1983-03-01	55.7356608478803
1983-04-01	52.9265255292653
1983-05-01	52.9850746268657
1983-06-01	53.4161490683230
1983-07-01	53.5980148883375
1983-08-01	54.5792079207921
1983-09-01	55.6242274412855
1983-10-01	56.2268803945746
1983-11-01	56.2807881773399
1983-12-01	56.9667077681874
1984-01-01	58.9175891758918
1984-02-01	59.6794081381011
1984-03-01	57.3185731857319
1984-04-01	54.2997542997543
1984-05-01	53.7423312883436
1984-06-01	53.4229828850856
1984-07-01	53.2435740514076
1984-08-01	53.6019536019536
1984-09-01	54.3239951278928
1984-10-01	55.4744525547445
1984-11-01	56.6060606060606
1984-12-01	56.9007263922518
1985-01-01	57.8181818181818
1985-02-01	58.5454545454546
1985-03-01	57.2815533980582
1985-04-01	55.5018137847642
1985-05-01	55.4347826086956
1985-06-01	55.6626506024096
1985-07-01	55.1143200962696
1985-08-01	55.8083832335329
1985-09-01	56.4593301435407
1985-10-01	56.6825775656325
1985-11-01	56.9725864123957
1985-12-01	57.8069129916567
1986-01-01	57.4316290130797
1986-02-01	58.5510688836104
1986-03-01	56.6350710900474
1986-04-01	54.6745562130178
1986-05-01	55.2132701421801
1986-06-01	54.8463356973995
1986-07-01	54.0636042402827
1986-08-01	54.8651817116061
1986-09-01	56.1260210035006
1986-10-01	56.8102444703143
1986-11-01	57.1428571428572
1986-12-01	57.8397212543554
1987-01-01	58.8439306358382
1987-02-01	59.7914252607184
1987-03-01	57.9190751445087
1987-04-01	55.5427251732102
1987-05-01	54.4405997693195
1987-06-01	55.0574712643678
1987-07-01	55.9127439724455
1987-08-01	55.4919908466819
1987-09-01	56.1003420752566
1987-10-01	57.2562358276644
1987-11-01	57.1266968325792
1987-12-01	57.4660633484163
1988-01-01	59.0293453724605
1988-02-01	59.9773242630386
1988-03-01	57.5141242937853
1988-04-01	55.0675675675676
1988-05-01	54.4843049327354
1988-06-01	55.3191489361702
1988-07-01	55.4433221099888
1988-08-01	55.5307262569832
1988-09-01	56.3333333333333
1988-10-01	56.7147613762486
1988-11-01	57.2062084257206
1988-12-01	57.5221238938053
1989-01-01	58.8950276243094
1989-02-01	58.9800443458980
1989-03-01	56.9060773480663
1989-04-01	54.3550165380375
1989-05-01	53.4653465346535
1989-06-01	53.0769230769231
1989-07-01	53.8037486218302
1989-08-01	54.9342105263158
1989-09-01	55.8342420937841
1989-10-01	56.0523446019629
1989-11-01	56.4270152505447
1989-12-01	56.8627450980392
1990-01-01	59.2349726775956
1990-02-01	59.2105263157895
1990-03-01	56.0655737704918
1990-04-01	53.5947712418301
1990-05-01	52.8260869565217
1990-06-01	53.2030401737242
1990-07-01	53.4351145038168
1990-08-01	53.9215686274510
1990-09-01	54.6637744034707
1990-10-01	54.5553145336226
1990-11-01	54.5157780195865
1990-12-01	55.6039173014146
1991-01-01	58.0715059588299
1991-02-01	57.5000000000000
1991-03-01	56.1688311688312
1991-04-01	52.2532188841202
1991-05-01	50.9635974304068
1991-06-01	52.0855614973262
1991-07-01	52.5187566988210
1991-08-01	52.9850746268657
1991-09-01	54.2462845010616
1991-10-01	54.5068928950159
1991-11-01	54.2372881355932
1991-12-01	53.5031847133758
1992-01-01	56.4755838641189
1992-02-01	56.8230277185501
1992-03-01	54.2735042735043
1992-04-01	51.5021459227468
1992-05-01	49.6794871794872
1992-06-01	51.3340448239061
1992-07-01	52.5187566988210
1992-08-01	52.2994652406417
1992-09-01	53.8461538461538
1992-10-01	54.2735042735043
1992-11-01	54.4290288153682
1992-12-01	53.9614561027837
1993-01-01	56.1629153269025
1993-02-01	57.1582346609257
1993-03-01	55.1502145922747
1993-04-01	51.2875536480687
1993-05-01	51.4469453376206
1993-06-01	51.2325830653805
1993-07-01	51.4531754574812
1993-08-01	52.3655913978495
1993-09-01	53.0107526881720
1993-10-01	53.2258064516129
1993-11-01	53.3834586466165
1993-12-01	53.6060279870829
1994-01-01	56.3106796116505
1994-02-01	55.8089033659066
1994-03-01	52.7627302275190
1994-04-01	50.6507592190889
1994-05-01	50.7057546145494
1994-06-01	51.5184381778742
1994-07-01	51.6375545851528
1994-08-01	51.8518518518519
1994-09-01	52.6659412404788
1994-10-01	53.2679738562092
1994-11-01	53.3260632497274
1994-12-01	52.5683060109290
1995-01-01	55.1422319474836
1995-02-01	55.2863436123348
1995-03-01	52.8052805280528
1995-04-01	51.4317180616740
1995-05-01	51.3215859030837
1995-06-01	51.3781697905182
1995-07-01	51.3333333333333
1995-08-01	52.1111111111111
1995-09-01	52.7777777777778
1995-10-01	53.2222222222222
1995-11-01	52.8888888888889
1995-12-01	52.8953229398664
1996-01-01	55.0837988826816
1996-02-01	54.9549549549550
1996-03-01	52.7559055118110
1996-04-01	51.0686164229471
1996-05-01	50.1687289088864
1996-06-01	49.2117117117117
1996-07-01	49.7155858930603
1996-08-01	51.1945392491468
1996-09-01	52.2133938706016
1996-10-01	53.4698521046644
1996-11-01	53.9338654503991
1996-12-01	54.6910755148741
1997-01-01	55.6192660550459
1997-02-01	54.6189376443418
1997-03-01	53.5178777393310
1997-04-01	51.2110726643599
1997-05-01	50.6358381502890
1997-06-01	50.6944444444444
1997-07-01	50.6417736289382
1997-08-01	50.8771929824561
1997-09-01	51.3986013986014
1997-10-01	52.5700934579439
1997-11-01	53.1615925058548
1997-12-01	53.2314923619271
1998-01-01	53.7735849056604
1998-02-01	54.5130641330166
1998-03-01	53.2621589561091
1998-04-01	50.1184834123223
1998-05-01	49.7624703087886
1998-06-01	50.8333333333333
1998-07-01	50.6602641056423
1998-08-01	50.7821901323706
1998-09-01	53.1250000000000
1998-10-01	54.0963855421687
1998-11-01	53.2608695652174
1998-12-01	52.9055690072639
1999-01-01	54.9210206561361
1999-02-01	55.5691554467564
1999-03-01	52.9914529914530
1999-04-01	50.7334963325183
1999-05-01	49.8159509202454
1999-06-01	51.4742014742015
1999-07-01	51.9801980198020
1999-08-01	52.1685254027261
1999-09-01	53.8461538461538
1999-10-01	54.4776119402985
1999-11-01	55.0435865504359
1999-12-01	54.6134663341646
2000-01-01	55.9598494353827
2000-02-01	56.1868686868687
2000-03-01	53.3417402269861
2000-04-01	51.3240857503153
2000-05-01	51.8331226295828
2000-06-01	52.4652338811631
2000-07-01	52.1683673469388
2000-08-01	53.3844189016603
2000-09-01	52.9336734693878
2000-10-01	52.1739130434783
2000-11-01	53.3248081841432
2000-12-01	53.2051282051282
2001-01-01	55.3410553410553
2001-02-01	55.5123216601816
2001-03-01	52.9182879377432
2001-04-01	51.6839378238342
2001-05-01	51.2321660181582
2001-06-01	52.5974025974026
2001-07-01	52.6867627785059
2001-08-01	52.6246719160105
2001-09-01	54.2595019659240
2001-10-01	54.4021024967148
2001-11-01	54.4736842105263
2001-12-01	55.2631578947368
2002-01-01	56.5737051792829
2002-02-01	58.1550802139038
2002-03-01	55.9254327563249
2002-04-01	53.3244680851064
2002-05-01	53.0666666666667
2002-06-01	53.4759358288770
2002-07-01	53.7012113055182
2002-08-01	53.4412955465587
2002-09-01	54.8517520215633
2002-10-01	55.7354925775978
2002-11-01	56.2922868741543
2002-12-01	56.2330623306233
2003-01-01	57.7445652173913
2003-02-01	58.2763337893297
2003-03-01	56.4979480164159
2003-04-01	54.0983606557377
2003-05-01	53.9617486338798
2003-06-01	53.4246575342466
2003-07-01	53.4530386740332
2003-08-01	54.2185338865837
2003-09-01	55.0344827586207
2003-10-01	56.7081604426003
2003-11-01	56.4315352697095
2003-12-01	55.6171983356449
2004-01-01	57.7994428969359
2004-02-01	58.0645161290322
2004-03-01	56.1452513966480
2004-04-01	55.0279329608939
2004-05-01	54.2016806722689
2004-06-01	54.4943820224719
2004-07-01	53.9548022598870
2004-08-01	53.8243626062323
2004-09-01	54.6099290780142
2004-10-01	55.5397727272727
2004-11-01	56.4722617354196
2004-12-01	56.9186875891584
2005-01-01	58.0829756795422
2005-02-01	57.9856115107914
2005-03-01	55.5395683453237
2005-04-01	53.3045977011494
2005-05-01	52.1551724137931
2005-06-01	53.1700288184438
2005-07-01	53.8461538461538
2005-08-01	53.3430232558140
2005-09-01	54.7169811320755
2005-10-01	54.7965116279070
2005-11-01	55.8309037900875
2005-12-01	56.1224489795918
2006-01-01	56.8914956011730
2006-02-01	57.5846833578792
2006-03-01	55.6534508076358
2006-04-01	53.6764705882353
2006-05-01	53.0191458026510
2006-06-01	51.7699115044248
2006-07-01	51.8573551263002
2006-08-01	54.5454545454545
2006-09-01	55.5059523809524
2006-10-01	54.6130952380952
2006-11-01	55.0595238095238
2006-12-01	57.0149253731343
2007-01-01	58.1325301204819
2007-02-01	57.2507552870091
2007-03-01	55.5052790346908
2007-04-01	52.3378582202112
2007-05-01	53.1818181818182
2007-06-01	53.3232628398792
2007-07-01	54.1729893778452
2007-08-01	55.2511415525114
2007-09-01	55.7251908396947
2007-10-01	56.3358778625954
2007-11-01	56.1162079510703
2007-12-01	56.1162079510703
2008-01-01	57.2085889570552
2008-02-01	57.2307692307692
2008-03-01	55.5384615384615
2008-04-01	51.5432098765432
2008-05-01	52.7777777777778
2008-06-01	53.6321483771252
2008-07-01	56.1240310077519
2008-08-01	55.4517133956386
2008-09-01	55.6074766355140
2008-10-01	56.9422776911076
2008-11-01	55.9375000000000
2008-12-01	56.0937500000000
2009-01-01	57.5235109717868
2009-02-01	57.7044025157233
2009-03-01	56.9858712715856
2009-04-01	52.3584905660377
2009-05-01	52.8391167192429
2009-06-01	53.3123028391167
2009-07-01	54.4303797468354
2009-08-01	55.3968253968254
2009-09-01	55.4848966613672
2009-10-01	57.2337042925278
2009-11-01	55.4140127388535
2009-12-01	56.1403508771930
2010-01-01	58.4000000000000
2010-02-01	58.7479935794542
2010-03-01	57.3717948717949
2010-04-01	55.1446945337621
2010-05-01	54.6623794212219
2010-06-01	54.5016077170418
2010-07-01	56.0581583198708
2010-08-01	56.4019448946515
2010-09-01	56.0064935064935
2010-10-01	56.9805194805195
2010-11-01	55.4471544715447
2010-12-01	55.7911908646003
2011-01-01	57.5856443719413
2011-02-01	57.6104746317512
2011-03-01	56.7114093959732
2011-04-01	54.0268456375839
2011-05-01	53.6912751677852
2011-06-01	54.4537815126050
2011-07-01	55.6302521008403
2011-08-01	56.1969439728353
2011-09-01	57.8512396694215
2011-10-01	58.9108910891089
2011-11-01	58.0858085808581
2011-12-01	58.6776859504132
2012-01-01	61.3223140495868
2012-02-01	60.1990049751244
2012-03-01	60.1990049751244
2012-04-01	55.3897180762852
2012-05-01	57.1428571428572
2012-06-01	57.1428571428572
2012-07-01	55.8139534883721
2012-08-01	55.6666666666667
2012-09-01	57.5000000000000
2012-10-01	57.9298831385643
2012-11-01	58.4307178631052
2012-12-01	59.2654424040067
2013-01-01	59.7662771285476
2013-02-01	59.2281879194631
2013-03-01	58.7939698492462
2013-04-01	53.9363484087102
2013-05-01	55.0335570469799
2013-06-01	56.4489112227806
2013-07-01	56.4489112227806
2013-08-01	56.3237774030354
2013-09-01	56.5436241610738
2013-10-01	56.6386554621849
2013-11-01	56.3973063973064
2013-12-01	56.5656565656566
2014-01-01	59.4276094276094
2014-02-01	58.7837837837838
2014-03-01	57.6013513513514
2014-04-01	55.6492411467116
2014-05-01	55.0505050505050
2014-06-01	55.0675675675676
2014-07-01	55.1433389544688
2014-08-01	56.5143824027073
2014-09-01	56.5143824027073
2014-10-01	57.8680203045685
2014-11-01	57.5296108291032
2014-12-01	55.9322033898305
2015-01-01	59.2216582064298
2015-02-01	60.6779661016949
2015-03-01	60.1694915254237
2015-04-01	54.4839255499154
2015-05-01	55.0847457627119
2015-06-01	55.0675675675676
2015-07-01	55.9322033898305
2015-08-01	57.1428571428572
2015-09-01	56.7796610169492
2015-10-01	57.2881355932203
2015-11-01	56.9491525423729
2015-12-01	56.1759729272420
2016-01-01	56.2711864406780
2016-02-01	57.7249575551783
2016-03-01	57.6271186440678
2016-04-01	54.4067796610170
2016-05-01	55.3299492385787
2016-06-01	53.8851351351351
2016-07-01	54.3147208121827
2016-08-01	53.8983050847458
2016-09-01	54.4839255499154
2016-10-01	55.1607445008460
2016-11-01	56.4406779661017
2016-12-01	55.7627118644068
2017-01-01	56.3237774030354
2017-02-01	57.4324324324324
2017-03-01	58.2770270270270
2017-04-01	53.7942664418212
2017-05-01	53.8720538720539
2017-06-01	52.9510961214165
2017-07-01	52.9510961214165
2017-08-01	53.3783783783784
2017-09-01	54.0404040404040
2017-10-01	54.9747048903879
2017-11-01	56.2289562289562
2017-12-01	55.3119730185498
2018-01-01	54.4688026981450
2018-02-01	53.7162162162162
2018-03-01	52.6138279932546
2018-04-01	51.0101010101010
2018-05-01	51.0101010101010
2018-06-01	49.7478991596639
2018-07-01	49.2436974789916
2018-08-01	50.3378378378378
2018-09-01	52.1079258010118