Month	Percent
1968-01-01	2.72412085190688
1968-02-01	3.06324110671937
1968-03-01	2.71604938271605
1968-04-01	2.46305418719212
1968-05-01	2.50984251968504
1968-06-01	2.21021611001965
1968-07-01	2.06084396467125
1968-08-01	2.10268948655257
1968-09-01	1.75953079178886
1968-10-01	1.80399804973184
1968-11-01	2.14007782101167
1968-12-01	2.62518230432669
1969-01-01	2.95829291949564
1969-02-01	3.00242130750605
1969-03-01	2.85161913968101
1969-04-01	2.36372407139412
1969-05-01	2.26179018286814
1969-06-01	2.06730769230769
1969-07-01	2.16034565530485
1969-08-01	2.39463601532567
1969-09-01	2.00956937799043
1969-10-01	2.48447204968944
1969-11-01	2.67175572519084
1969-12-01	2.66920877025739
1970-01-01	2.76453765490944
1970-02-01	2.94957183634634
1970-03-01	2.51901140684411
1970-04-01	2.13573801613669
1970-05-01	2.46445497630332
1970-06-01	2.60293421675343
1970-07-01	2.69758637008992
1970-08-01	2.46095598674870
1970-09-01	2.35960358659745
1970-10-01	2.40679565832940
1970-11-01	2.16674517192652
1970-12-01	2.21802737140160
1971-01-01	2.41020793950851
1971-02-01	2.64275601698915
1971-03-01	1.93578847969783
1971-04-01	1.79160773220179
1971-05-01	2.35183443085607
1971-06-01	2.48592870544090
1971-07-01	2.38764044943820
1971-08-01	2.61927034611787
1971-09-01	2.33426704014939
1971-10-01	2.28119180633147
1971-11-01	2.18300046446818
1971-12-01	2.27483751160631
1972-01-01	2.45030050855294
1972-02-01	2.56527714154833
1972-03-01	2.65082266910420
1972-04-01	2.18778486782133
1972-05-01	2.27272727272727
1972-06-01	2.31082917988219
1972-07-01	2.19632451815329
1972-08-01	2.18847699866012
1972-09-01	2.13713268032057
1972-10-01	1.99911150599733
1972-11-01	2.39467849223947
1972-12-01	2.52659574468085
1973-01-01	2.42397531952402
1973-02-01	2.37258347978910
1973-03-01	2.36323851203501
1973-04-01	2.09881941407958
1973-05-01	1.95993031358885
1973-06-01	2.04081632653061
1973-07-01	1.94974003466204
1973-08-01	2.11846087332469
1973-09-01	2.19922380336352
1973-10-01	2.06185567010309
1973-11-01	2.01630201630202
1973-12-01	2.39520958083832
1974-01-01	2.55427841634738
1974-02-01	2.63157894736842
1974-03-01	2.11685012701101
1974-04-01	2.07013096746937
1974-05-01	2.14556163230963
1974-06-01	2.09731543624161
1974-07-01	2.43084660519698
1974-08-01	2.21386800334169
1974-09-01	2.25187656380317
1974-10-01	2.20557636287973
1974-11-01	1.99418363107603
1974-12-01	2.36318407960199
1975-01-01	2.89256198347107
1975-02-01	2.84184514003295
1975-03-01	2.55249073692878
1975-04-01	2.62725779967159
1975-05-01	2.53682487725041
1975-06-01	2.40619902120718
1975-07-01	2.56723716381418
1975-08-01	2.52032520325203
1975-09-01	2.27088402270884
1975-10-01	2.22852512155592
1975-11-01	2.18181818181818
1975-12-01	2.09762000806777
1976-01-01	2.81463610776035
1976-02-01	2.73202089192447
1976-03-01	2.68860353130016
1976-04-01	2.56410256410256
1976-05-01	2.27817745803357
1976-06-01	2.31259968102073
1976-07-01	2.35247208931419
1976-08-01	2.46717071229606
1976-09-01	2.57834192780643
1976-10-01	2.17994451050337
1976-11-01	2.02380952380952
1976-12-01	2.21606648199446
1977-01-01	2.80078895463511
1977-02-01	2.83799763500197
1977-03-01	2.63883418668767
1977-04-01	2.43902439024390
1977-05-01	2.35386426049431
1977-06-01	2.58620689655172
1977-07-01	2.54802038416307
1977-08-01	2.69741985926505
1977-09-01	2.69215762777995
1977-10-01	2.49415432579891
1977-11-01	2.45327102803738
1977-12-01	2.53115264797508
1978-01-01	2.81140179617337
1978-02-01	2.65107212475634
1978-03-01	2.61208576998051
1978-04-01	2.49415432579891
1978-05-01	2.29037267080745
1978-06-01	2.28948389600310
1978-07-01	2.36617532971296
1978-08-01	2.47965904688105
1978-09-01	2.59287925696594
1978-10-01	2.62852725164283
1978-11-01	2.28063393892540
1978-12-01	2.55319148936170
1979-01-01	2.85714285714286
1979-02-01	2.78099652375435
1979-03-01	2.69957578094871
1979-04-01	2.35248746625530
1979-05-01	2.35067437379576
1979-06-01	2.04081632653061
1979-07-01	1.81047765793528
1979-08-01	2.07852193995381
1979-09-01	2.30503265462927
1979-10-01	2.30503265462927
1979-11-01	2.10970464135021
1979-12-01	2.38095238095238
1980-01-01	2.60936300844206
1980-02-01	2.76391554702495
1980-03-01	2.80122793553338
1980-04-01	2.45304714449981
1980-05-01	2.56214149139579
1980-06-01	2.29357798165138
1980-07-01	2.18140068886338
1980-08-01	2.44741873804971
1980-09-01	2.37003058103976
1980-10-01	2.13577421815408
1980-11-01	2.21458571974036
1980-12-01	2.44648318042813
1981-01-01	2.48091603053435
1981-02-01	2.33002291825821
1981-03-01	2.25104921785578
1981-04-01	2.21543162719633
1981-05-01	2.36550934757726
1981-06-01	2.24933282500953
1981-07-01	2.32469512195122
1981-08-01	2.58948971820259
1981-09-01	2.77777777777778
1981-10-01	2.66463646745337
1981-11-01	2.74076893795204
1981-12-01	2.82334986646318
1982-01-01	2.74494853221502
1982-02-01	2.55335365853659
1982-03-01	2.21374045801527
1982-04-01	2.01981707317073
1982-05-01	2.17060167555217
1982-06-01	2.24505327245053
1982-07-01	2.43623905595737
1982-08-01	2.47054351957431
1982-09-01	2.62158054711246
1982-10-01	2.47242297451502
1982-11-01	2.24505327245053
1982-12-01	2.28397411496003
1983-01-01	2.43346007604563
1983-02-01	2.47336377473364
1983-03-01	2.40366272415109
1983-04-01	2.28658536585366
1983-05-01	2.17142857142857
1983-06-01	2.13089802130898
1983-07-01	2.16977540921203
1983-08-01	2.09045990117826
1983-09-01	2.16647662485747
1983-10-01	2.28397411496003
1983-11-01	2.20868240670221
1983-12-01	2.43809523809524
1984-01-01	2.62857142857143
1984-02-01	2.58948971820259
1984-03-01	2.44181610072491
1984-04-01	2.43995425085780
1984-05-01	2.32380952380952
1984-06-01	2.01827875095202
1984-07-01	2.21036585365854
1984-08-01	2.09444021325209
1984-09-01	2.20616203879802
1984-10-01	2.28136882129278
1984-11-01	2.13089802130898
1984-12-01	2.40091463414634
1985-01-01	2.39817282070803
1985-02-01	2.81797410510282
1985-03-01	2.70579268292683
1985-04-01	2.47713414634146
1985-05-01	2.39726027397260
1985-06-01	2.24847560975610
1985-07-01	2.40000000000000
1985-08-01	2.47807853602745
1985-09-01	2.47242297451502
1985-10-01	2.62357414448669
1985-11-01	2.62357414448669
1985-12-01	2.77989337395278
1986-01-01	2.74076893795204
1986-02-01	3.00608828006088
1986-03-01	2.70682424704537
1986-04-01	2.44181610072491
1986-05-01	2.52583237657865
1986-06-01	2.52197172334734
1986-07-01	2.36370568051849
1986-08-01	2.09523809523810
1986-09-01	2.28223659186002
1986-10-01	2.47524752475248
1986-11-01	2.78307281738467
1986-12-01	2.89744567289363
1987-01-01	2.93445121951220
1987-02-01	2.86041189931350
1987-03-01	2.66768292682927
1987-04-01	2.59146341463415
1987-05-01	2.63559969442322
1987-06-01	2.63559969442322
1987-07-01	2.28832951945080
1987-08-01	2.13414634146341
1987-09-01	2.25190839694656
1987-10-01	2.17640320733104
1987-11-01	2.55822833142421
1987-12-01	2.55920550038197
1988-01-01	2.55530129672006
1988-02-01	2.63258298359405
1988-03-01	2.60038240917782
1988-04-01	2.44461420932009
1988-05-01	2.55530129672006
1988-06-01	2.29270156667940
1988-07-01	2.06106870229008
1988-08-01	2.09843571156047
1988-09-01	2.40274599542334
1988-10-01	2.32469512195122
1988-11-01	2.32292460015232
1988-12-01	2.51908396946565
1989-01-01	2.63358778625954
1989-02-01	2.44274809160305
1989-03-01	2.40549828178694
1989-04-01	2.21627818112342
1989-05-01	2.13577421815408
1989-06-01	2.01981707317073
1989-07-01	2.01751046821469
1989-08-01	2.16894977168950
1989-09-01	2.32027386839102
1989-10-01	2.50950570342205
1989-11-01	2.43716679360244
1989-12-01	2.47336377473364
1990-01-01	2.51332825590251
1990-02-01	2.47713414634146
1990-03-01	2.36280487804878
1990-04-01	2.25362872421696
1990-05-01	2.16565349544073
1990-06-01	2.24334600760456
1990-07-01	2.16647662485747
1990-08-01	2.43253515773470
1990-09-01	2.23823975720789
1990-10-01	2.04700530705080
1990-11-01	2.23993925588459
1990-12-01	2.43161094224924
1991-01-01	2.51141552511416
1991-02-01	2.32380952380952
1991-03-01	2.13008748573602
1991-04-01	2.05714285714286
1991-05-01	2.13252094440213
1991-06-01	2.24847560975610
1991-07-01	2.36190476190476
1991-08-01	2.40091463414634
1991-09-01	2.16894977168950
1991-10-01	1.97944423296536
1991-11-01	1.94433854365231
1991-12-01	1.94805194805195
1992-01-01	1.94879633167749
1992-02-01	1.83206106870229
1992-03-01	2.02212895841282
1992-04-01	1.98700802445548
1992-05-01	2.02058711399161
1992-06-01	2.24505327245053
1992-07-01	2.20532319391635
1992-08-01	2.35651843405549
1992-09-01	2.35741444866920
1992-10-01	1.90041809198024
1992-11-01	1.97568389057751
1992-12-01	2.01674277016743
1993-01-01	2.28050171037628
1993-02-01	2.35651843405549
1993-03-01	2.43068742878845
1993-04-01	2.01597565614302
1993-05-01	1.86028853454822
1993-06-01	2.01138519924099
1993-07-01	2.34848484848485
1993-08-01	2.38365493757094
1993-09-01	1.92816635160681
1993-10-01	1.81680545041635
1993-11-01	2.04081632653061
1993-12-01	2.19198790627362
1994-01-01	2.49150622876557
1994-02-01	2.60377358490566
1994-03-01	2.52925632314081
1994-04-01	2.75888133030990
1994-05-01	2.26073850791258
1994-06-01	2.33521657250471
1994-07-01	2.55927738050433
1994-08-01	2.40691989469725
1994-09-01	2.21721157459602
1994-10-01	2.21887927792403
1994-11-01	2.66917293233083
1994-12-01	2.51879699248120
1995-01-01	3.08154829011650
1995-02-01	2.96992481203008
1995-03-01	2.55639097744361
1995-04-01	2.70982310876929
1995-05-01	2.51690458302029
1995-06-01	2.32820127675554
1995-07-01	2.13963963963964
1995-08-01	2.13883677298311
1995-09-01	2.06224221972253
1995-10-01	2.13723284589426
1995-11-01	2.47191011235955
1995-12-01	2.36220472440945
1996-01-01	2.84750843012364
1996-02-01	2.77673545966229
1996-03-01	2.36664162283997
1996-04-01	2.32995114618564
1996-05-01	2.17391304347826
1996-06-01	2.09816410640689
1996-07-01	1.94902548725637
1996-08-01	1.91082802547771
1996-09-01	2.13323353293413
1996-10-01	2.20891052040434
1996-11-01	2.35955056179775
1996-12-01	2.28721409823772
1997-01-01	2.31602540156892
1997-02-01	2.28037383177570
1997-03-01	2.16660440791931
1997-04-01	2.09424083769634
1997-05-01	2.12686567164179
1997-06-01	2.08799403430276
1997-07-01	2.19821162444113
1997-08-01	2.31256993659082
1997-09-01	2.42085661080074
1997-10-01	2.38272524199553
1997-11-01	2.56791961295125
1997-12-01	2.57078986587183
1998-01-01	2.53164556962025
1998-02-01	2.67956829177521
1998-03-01	2.56410256410256
1998-04-01	2.64530551415797
1998-05-01	2.52788104089219
1998-06-01	2.26765799256506
1998-07-01	2.48793167471222
1998-08-01	2.67161410018553
1998-09-01	2.63548626577580
1998-10-01	2.56315007429421
1998-11-01	2.70871985157699
1998-12-01	2.71375464684015
1999-01-01	2.71173848439822
1999-02-01	2.86138981791156
1999-03-01	2.93898809523810
1999-04-01	2.71982116244411
1999-05-01	2.67657992565056
1999-06-01	2.60223048327138
1999-07-01	2.63646490902339
1999-08-01	2.63255469039674
1999-09-01	2.41008527994067
1999-10-01	2.37300704486466
1999-11-01	2.51758607922991
1999-12-01	2.55460940392447
2000-01-01	2.84763313609468
2000-02-01	2.88035450516987
2000-03-01	2.92051756007394
2000-04-01	2.88781932617549
2000-05-01	2.66173752310536
2000-06-01	2.65780730897010
2000-07-01	2.80546327057955
2000-08-01	2.65780730897010
2000-09-01	2.43093922651934
2000-10-01	2.43093922651934
2000-11-01	2.42647058823529
2000-12-01	2.49724568490635
2001-01-01	2.93793609988983
2001-02-01	3.04922850844967
2001-03-01	3.15133748625870
2001-04-01	3.00696736340301
2001-05-01	2.78082693011343
2001-06-01	2.92718624222466
2001-07-01	2.95944464742419
2001-08-01	2.81432748538012
2001-09-01	2.96160877513711
2001-10-01	2.96269202633504
2001-11-01	3.10559006211180
2001-12-01	3.32967435053055
2002-01-01	3.63436123348018
2002-02-01	3.64506627393225
2002-03-01	3.46479911537044
2002-04-01	3.47633136094675
2002-05-01	3.58197932053176
2002-06-01	3.21270310192024
2002-07-01	3.03254437869822
2002-08-01	3.07179866765359
2002-09-01	3.44062153163152
2002-10-01	3.22222222222222
2002-11-01	3.12035661218425
2002-12-01	3.34946036471902
2003-01-01	3.57941834451902
2003-02-01	3.65944734876774
2003-03-01	3.54345393509884
2003-04-01	3.55672032946462
2003-05-01	3.66355140186916
2003-06-01	3.32461710870377
2003-07-01	3.29341317365269
2003-08-01	3.37331334332834
2003-09-01	3.37457817772778
2003-10-01	3.26699211415697
2003-11-01	3.19428786170613
2003-12-01	3.31574981160512
2004-01-01	3.43266691814410
2004-02-01	3.47957639939486
2004-03-01	4.01059402194476
2004-04-01	3.78357926598562
2004-05-01	3.37248957938613
2004-06-01	3.42075256556442
2004-07-01	3.72623574144487
2004-08-01	3.65157854697604
2004-09-01	3.69101978691020
2004-10-01	3.62180709111704
2004-11-01	3.58504958047292
2004-12-01	3.85790679908327
2005-01-01	3.78729915837796
2005-02-01	3.75622844001533
2005-03-01	3.80330388013830
2005-04-01	3.92006149116065
2005-05-01	3.79601226993865
2005-06-01	3.72360844529750
2005-07-01	3.84319754035357
2005-08-01	3.92156862745098
2005-09-01	3.84172109104879
2005-10-01	3.50134667179684
2005-11-01	3.85059684251059
2005-12-01	4.05092592592593
2006-01-01	3.82387022016222
2006-02-01	3.86697602474865
2006-03-01	3.55075260517175
2006-04-01	3.67931835786212
2006-05-01	3.63777089783282
2006-06-01	3.59489756474681
2006-07-01	3.71660859465738
2006-08-01	3.98915569326104
2006-09-01	3.82978723404255
2006-10-01	3.52576520728400
2006-11-01	3.71517027863777
2006-12-01	3.76406674427629
2007-01-01	3.85964912280702
2007-02-01	3.97971127584862
2007-03-01	3.47656250000000
2007-04-01	3.44153304653891
2007-05-01	3.59375000000000
2007-06-01	3.47656250000000
2007-07-01	3.63423212192263
2007-08-01	3.71383893666927
2007-09-01	3.47656250000000
2007-10-01	3.47792106291520
2007-11-01	3.71383893666927
2007-12-01	3.63707469691044
2008-01-01	3.48336594911937
2008-02-01	3.68194281237760
2008-03-01	3.92003136025088
2008-04-01	3.76914016489988
2008-05-01	3.56583072100313
2008-06-01	3.57002746174971
2008-07-01	4.04080031384857
2008-08-01	3.68772067477442
2008-09-01	3.68482947863583
2008-10-01	3.80094043887147
2008-11-01	3.92156862745098
2008-12-01	3.80989787902592
2009-01-01	3.92618767177071
2009-02-01	4.04715127701375
2009-03-01	3.85220125786164
2009-04-01	3.81589299763965
2009-05-01	3.81289308176101
2009-06-01	3.93236335037357
2009-07-01	3.85523210070810
2009-08-01	3.81889763779528
2009-09-01	3.77655389457120
2009-10-01	3.65997638724911
2009-11-01	3.89610389610390
2009-12-01	4.05991328340560
2010-01-01	3.90532544378698
2010-02-01	3.86740331491713
2010-03-01	3.55450236966825
2010-04-01	3.51917754052985
2010-05-01	3.59399684044234
2010-06-01	3.71394705649941
2010-07-01	3.67298578199052
2010-08-01	3.67153572838531
2010-09-01	3.86587771203156
2010-10-01	3.82794001578532
2010-11-01	3.78847671665351
2010-12-01	3.98736675878405
2011-01-01	3.63349131121643
2011-02-01	3.63636363636364
2011-03-01	3.84615384615385
2011-04-01	3.80801269337564
2011-05-01	3.64934549781833
2011-06-01	3.72867909559699
2011-07-01	4.00634668782229
2011-08-01	4.09542743538767
2011-09-01	4.39952437574316
2011-10-01	4.15676959619952
2011-11-01	4.20134760206104
2011-12-01	4.20134760206104
2012-01-01	4.04601348671162
2012-02-01	4.52560539896784
2012-03-01	4.48412698412698
2012-04-01	4.21471172962227
2012-05-01	4.45682451253482
2012-06-01	3.93951452447274
2012-07-01	4.33399602385686
2012-08-01	4.37201907790143
2012-09-01	4.21638822593477
2012-10-01	4.29765220851572
2012-11-01	4.41527446300716
2012-12-01	4.70306895177361
2013-01-01	4.14838452333466
2013-02-01	4.67065868263473
2013-03-01	4.67252396166134
2013-04-01	4.27487015581302
2013-05-01	4.23322683706070
2013-06-01	3.95525369556532
2013-07-01	4.31482221334399
2013-08-01	4.35825669732107
2013-09-01	4.11506192568917
2013-10-01	4.15501398322014
2013-11-01	4.23661071143086
2013-12-01	4.28342674139311
2014-01-01	4.44711538461538
2014-02-01	4.57463884430177
2014-03-01	4.29546366920915
2014-04-01	3.93890675241158
2014-05-01	3.93258426966292
2014-06-01	4.25873844917638
2014-07-01	4.70257234726688
2014-08-01	4.58567980691874
2014-09-01	4.33734939759036
2014-10-01	4.26045016077170
2014-11-01	4.66613032984714
2014-12-01	4.62590506838294
2015-01-01	4.42834138486312
2015-02-01	4.43548387096774
2015-03-01	4.27591770875353
2015-04-01	4.36011303996770
2015-05-01	4.48122729107792
2015-06-01	4.63896732553449
2015-07-01	4.76382721033508
2015-08-01	4.80613893376414
2015-09-01	4.07751312071054
2015-10-01	4.36011303996770
2015-11-01	4.68686868686869
2015-12-01	4.04530744336570
2016-01-01	4.12621359223301
2016-02-01	4.29497568881686
2016-03-01	4.49756888168558
2016-04-01	4.54545454545455
2016-05-01	4.42549736094194
2016-06-01	4.70779220779221
2016-07-01	4.58976441917141
2016-08-01	4.14297319252640
2016-09-01	4.06338886631451
2016-10-01	4.30719219829338
2016-11-01	4.39024390243902
2016-12-01	4.15140415140415
2017-01-01	4.39739413680782
2017-02-01	4.31947840260799
2017-03-01	4.48430493273543
2017-04-01	4.69579420171499
2017-05-01	4.44716442268462
2017-06-01	4.65686274509804
2017-07-01	4.41176470588235
2017-08-01	4.36913025724786
2017-09-01	4.28746427113107
2017-10-01	4.00654129190515
2017-11-01	4.33183489987740
2017-12-01	4.50634985661614
2018-01-01	4.54918032786885
2018-02-01	4.26579163248564
2018-03-01	4.18719211822660
2018-04-01	4.39786272092067
2018-05-01	4.35855263157895
2018-06-01	4.39786272092067
2018-07-01	4.39967105263158
2018-08-01	4.32098765432099
2018-09-01	4.15808974886785