Month	Percent
1978-01-01	2.08439247585155
1978-02-01	2.21886031265759
1978-03-01	2.39960822722821
1978-04-01	2.12967345007099
1978-05-01	2.00455580865604
1978-06-01	2.07113912651959
1978-07-01	1.88853063104560
1978-08-01	1.95530726256983
1978-09-01	2.12864414622860
1978-10-01	1.84331797235023
1978-11-01	1.69172932330827
1978-12-01	1.82516810758886
1979-01-01	2.19619326500732
1979-02-01	2.06896551724138
1979-03-01	2.41196333815726
1979-04-01	2.22428174235403
1979-05-01	1.98555956678700
1979-06-01	1.89701897018970
1979-07-01	1.99818346957312
1979-08-01	2.00273099681384
1979-09-01	1.86873290793072
1979-10-01	1.85856754306437
1979-11-01	1.85270958777212
1979-12-01	1.76779741997133
1980-01-01	1.91176470588235
1980-02-01	1.80929095354523
1980-03-01	2.28898426323319
1980-04-01	2.28206298493838
1980-05-01	1.97309417040359
1980-06-01	1.86583740559751
1980-07-01	1.91707534551939
1980-08-01	2.01522615315719
1980-09-01	1.96516301920500
1980-10-01	1.89873417721519
1980-11-01	1.93014705882353
1980-12-01	1.93032015065913
1981-01-01	2.12355212355212
1981-02-01	2.37518177411537
1981-03-01	2.54716981132075
1981-04-01	2.29110512129380
1981-05-01	2.30088495575221
1981-06-01	2.26063829787234
1981-07-01	2.00356188780053
1981-08-01	1.92738682205289
1981-09-01	1.96516301920500
1981-10-01	1.96078431372549
1981-11-01	1.97575213291423
1981-12-01	1.92307692307692
1982-01-01	2.16674517192652
1982-02-01	2.21698113207547
1982-03-01	2.61467889908257
1982-04-01	2.58351893095768
1982-05-01	2.34680573663624
1982-06-01	2.26283724978242
1982-07-01	2.24768620537682
1982-08-01	2.21434898139947
1982-09-01	2.32967032967033
1982-10-01	2.26382237701350
1982-11-01	2.25663716814159
1982-12-01	2.19141323792487
1983-01-01	2.82203004096495
1983-02-01	2.82074613284804
1983-03-01	2.92423571112096
1983-04-01	2.87430287430287
1983-05-01	2.69587194608256
1983-06-01	2.53699788583510
1983-07-01	2.55319148936170
1983-08-01	2.72804774083546
1983-09-01	2.58365099534096
1983-10-01	2.49682606855692
1983-11-01	2.37375917134225
1983-12-01	2.35660293463762
1984-01-01	3.01232314011867
1984-02-01	3.05517555859553
1984-03-01	3.17320405464963
1984-04-01	2.84742881427964
1984-05-01	2.81630937368642
1984-06-01	2.91666666666667
1984-07-01	2.72422464375524
1984-08-01	2.74841437632135
1984-09-01	2.54484772632457
1984-10-01	2.70720533111204
1984-11-01	2.59795570698467
1984-12-01	2.36530880420499
1985-01-01	2.66785237883504
1985-02-01	2.79503105590062
1985-03-01	2.96038310840226
1985-04-01	2.69133725820017
1985-05-01	2.77662660588479
1985-06-01	2.66333749479817
1985-07-01	2.54272613588995
1985-08-01	2.64261744966443
1985-09-01	2.70495214315439
1985-10-01	2.62390670553936
1985-11-01	2.58693808312129
1985-12-01	2.50439367311072
1986-01-01	2.90109890109890
1986-02-01	2.84962735642262
1986-03-01	3.26320309145556
1986-04-01	3.15745741587038
1986-05-01	2.81224152191894
1986-06-01	2.71047227926078
1986-07-01	2.62833675564682
1986-08-01	2.98507462686567
1986-09-01	2.85596026490066
1986-10-01	2.56728778467909
1986-11-01	2.52100840336134
1986-12-01	2.66437473141384
1987-01-01	3.22862129144852
1987-02-01	3.22721325774095
1987-03-01	3.31632653061224
1987-04-01	3.24169060320066
1987-05-01	3.14897052886556
1987-06-01	2.83860502838605
1987-07-01	2.49795249795250
1987-08-01	2.54098360655738
1987-09-01	2.61331155573704
1987-10-01	2.61865793780687
1987-11-01	2.42798353909465
1987-12-01	2.38294314381271
1988-01-01	2.76360544217687
1988-02-01	2.82534246575342
1988-03-01	3.13676286072773
1988-04-01	2.82485875706215
1988-05-01	2.61904761904762
1988-06-01	2.39712345185777
1988-07-01	2.28091236494598
1988-08-01	2.69943593875907
1988-09-01	2.64847512038523
1988-10-01	2.53623188405797
1988-11-01	2.36638106895145
1988-12-01	2.27272727272727
1989-01-01	2.55979857322702
1989-02-01	2.63267864605098
1989-03-01	2.93997550020416
1989-04-01	2.57425742574257
1989-05-01	2.40963855421687
1989-06-01	2.12765957446808
1989-07-01	2.06708268330733
1989-08-01	2.24409448818898
1989-09-01	2.19780219780220
1989-10-01	2.27718884962701
1989-11-01	2.13523131672598
1989-12-01	1.96471531676022
1990-01-01	2.48776508972268
1990-02-01	2.39545269995940
1990-03-01	2.13861386138614
1990-04-01	2.42868157286045
1990-05-01	2.35741444866920
1990-06-01	2.20700152207002
1990-07-01	2.06579954093344
1990-08-01	2.19822599305823
1990-09-01	2.18390804597701
1990-10-01	2.19484020023104
1990-11-01	2.05187766163376
1990-12-01	1.84748427672956
1991-01-01	2.06841686555290
1991-02-01	2.14711729622266
1991-03-01	2.46286161063331
1991-04-01	2.35026535253980
1991-05-01	2.27442207307979
1991-06-01	2.26429101707498
1991-07-01	2.13883677298311
1991-08-01	2.25394440270473
1991-09-01	2.40420736288505
1991-10-01	2.34138972809668
1991-11-01	2.23062381852552
1991-12-01	1.90839694656489
1992-01-01	2.31827111984283
1992-02-01	2.21445221445221
1992-03-01	2.68610897927859
1992-04-01	2.33170364798797
1992-05-01	2.14259327669006
1992-06-01	1.98821796759941
1992-07-01	2.06224221972253
1992-08-01	2.24550898203593
1992-09-01	2.34549516008935
1992-10-01	2.19330855018587
1992-11-01	2.31429637924599
1992-12-01	2.31235784685368
1993-01-01	2.64900662251656
1993-02-01	2.67190569744597
1993-03-01	2.85383725414578
1993-04-01	2.54491017964072
1993-05-01	2.58588843738456
1993-06-01	2.58016955399926
1993-07-01	2.49163257716623
1993-08-01	2.53826054497947
1993-09-01	2.75810659709281
1993-10-01	2.75297619047619
1993-11-01	2.72999252056844
1993-12-01	2.75992438563327
1994-01-01	3.04783950617284
1994-02-01	3.26213592233010
1994-03-01	3.31428571428571
1994-04-01	2.98782736997418
1994-05-01	3.06793279766253
1994-06-01	2.63832905826310
1994-07-01	2.81585772508336
1994-08-01	3.13432835820896
1994-09-01	3.02464525765497
1994-10-01	2.97840655249442
1994-11-01	2.89039039039039
1994-12-01	2.63660680168131
1995-01-01	3.08641975308642
1995-02-01	3.15992292870906
1995-03-01	3.49013657056146
1995-04-01	3.37161911819192
1995-05-01	3.26605504587156
1995-06-01	3.14442413162706
1995-07-01	3.02806499261448
1995-08-01	3.38919925512104
1995-09-01	3.53460972017673
1995-10-01	3.27868852459016
1995-11-01	3.23673315769665
1995-12-01	3.04529881994671
1996-01-01	3.66088631984586
1996-02-01	3.53123787349631
1996-03-01	3.47169811320755
1996-04-01	3.75829034635225
1996-05-01	3.51390922401171
1996-06-01	3.22230267921796
1996-07-01	3.34423845874228
1996-08-01	3.24843115540790
1996-09-01	3.36011687363039
1996-10-01	3.37986774430566
1996-11-01	3.17045878403581
1996-12-01	3.03260045489007
1997-01-01	3.41555977229602
1997-02-01	3.58761329305136
1997-03-01	3.61535594483787
1997-04-01	3.64830353885443
1997-05-01	3.89329488103821
1997-06-01	3.46428571428571
1997-07-01	3.27102803738318
1997-08-01	3.41693929480189
1997-09-01	3.35861321776815
1997-10-01	3.50180505415162
1997-11-01	3.39233038348083
1997-12-01	3.12616300707108
1998-01-01	3.35195530726257
1998-02-01	3.57142857142857
1998-03-01	4.07105847520355
1998-04-01	4.27846265409717
1998-05-01	4.15175375805297
1998-06-01	4.08895265423242
1998-07-01	3.98117987694535
1998-08-01	4.30379746835443
1998-09-01	4.24836601307190
1998-10-01	4.36046511627907
1998-11-01	4.19580419580420
1998-12-01	3.74672161858374
1999-01-01	4.27221172022684
1999-02-01	4.69696969696970
1999-03-01	5.07783543365456
1999-04-01	4.89130434782609
1999-05-01	4.53563714902808
1999-06-01	4.42509974610083
1999-07-01	4.48414145096610
1999-08-01	4.64272760246645
1999-09-01	4.72212132219397
1999-10-01	4.57205559619605
1999-11-01	4.08388520971302
1999-12-01	3.82165605095541
2000-01-01	4.41342889475670
2000-02-01	4.62296324365290
2000-03-01	4.98687664041995
2000-04-01	5.06744440393730
2000-05-01	4.78087649402390
2000-06-01	4.56521739130435
2000-07-01	4.29872495446266
2000-08-01	4.43061149761992
2000-09-01	4.60694698354662
2000-10-01	4.37317784256560
2000-11-01	4.27475337961272
2000-12-01	4.01188707280832
2001-01-01	4.65549348230912
2001-02-01	4.65202828433197
2001-03-01	4.97032640949555
2001-04-01	4.94686698424331
2001-05-01	4.92575153929736
2001-06-01	4.69992769342010
2001-07-01	4.62827988338192
2001-08-01	4.87715438210488
2001-09-01	5.32500918105031
2001-10-01	4.86822840409956
2001-11-01	4.69432314410480
2001-12-01	4.45599702933531
2002-01-01	5.06042296072508
2002-02-01	5.43601359003398
2002-03-01	5.67587752053772
2002-04-01	5.44242873009996
2002-05-01	5.50863018729343
2002-06-01	5.30552506403220
2002-07-01	5.07913139492087
2002-08-01	5.16414607156031
2002-09-01	5.11970534069982
2002-10-01	5.03861713865392
2002-11-01	4.56721915285451
2002-12-01	4.61192350956130
2003-01-01	5.42900531511010
2003-02-01	5.14874141876430
2003-03-01	5.34579439252336
2003-04-01	5.62338142804292
2003-05-01	5.42920029347029
2003-06-01	4.82583454281567
2003-07-01	4.83162518301610
2003-08-01	4.84109386548411
2003-09-01	4.87084870848708
2003-10-01	4.86546258754147
2003-11-01	4.64511334076552
2003-12-01	4.20894400601278
2004-01-01	4.74383301707780
2004-02-01	4.69696969696970
2004-03-01	4.76722532588454
2004-04-01	4.92647058823529
2004-05-01	4.73394495412844
2004-06-01	4.26784400294334
2004-07-01	4.32551319648094
2004-08-01	4.64181286549708
2004-09-01	4.36697247706422
2004-10-01	4.44036697247706
2004-11-01	3.99701158012701
2004-12-01	3.73584905660377
2005-01-01	4.25932906143988
2005-02-01	4.31328036322361
2005-03-01	4.57614403600900
2005-04-01	4.63405663847003
2005-05-01	4.47815095702420
2005-06-01	3.83071871579715
2005-07-01	4.15451895043732
2005-08-01	4.24131627056673
2005-09-01	4.25764192139738
2005-10-01	4.51730418943534
2005-11-01	4.30267062314540
2005-12-01	3.75657400450789
2006-01-01	4.09620443442315
2006-02-01	3.68559608875517
2006-03-01	4.23062523399476
2006-04-01	4.20664206642066
2006-05-01	4.06091370558376
2006-06-01	4.06976744186046
2006-07-01	3.83771929824561
2006-08-01	3.97375136711630
2006-09-01	4.06976744186046
2006-10-01	3.98839738941262
2006-11-01	3.54143848119752
2006-12-01	3.38919925512104
2007-01-01	3.93194706994329
2007-02-01	3.98646107559233
2007-03-01	4.23319717786855
2007-04-01	3.97520058351568
2007-05-01	3.82947976878613
2007-06-01	3.37690631808279
2007-07-01	3.26485693323551
2007-08-01	3.87994143484627
2007-09-01	4.17276720351391
2007-10-01	4.06147091108672
2007-11-01	3.57273058694860
2007-12-01	3.31613854089904
2008-01-01	3.70508982035928
2008-02-01	3.84036144578313
2008-03-01	4.19450631031923
2008-04-01	4.25454545454546
2008-05-01	3.88243831640058
2008-06-01	3.80434782608696
2008-07-01	3.80673499267936
2008-08-01	4.11009174311927
2008-09-01	4.14374770810414
2008-10-01	3.65448504983389
2008-11-01	3.66837857666911
2008-12-01	3.84757676655568
2009-01-01	4.12639405204461
2009-02-01	4.45599702933531
2009-03-01	5.15578635014837
2009-04-01	4.99635302698760
2009-05-01	4.98000727008361
2009-06-01	4.88338192419825
2009-07-01	4.90303695572631
2009-08-01	5.19056261343013
2009-09-01	5.35262206148282
2009-10-01	4.98899486426999
2009-11-01	4.69380271360469
2009-12-01	4.55555555555556
2010-01-01	4.53869047619048
2010-02-01	4.43037974683544
2010-03-01	4.82553823311062
2010-04-01	5.08598609586535
2010-05-01	4.90730643402399
2010-06-01	4.83516483516484
2010-07-01	4.51376146788991
2010-08-01	4.89587139203508
2010-09-01	4.63264567499095
2010-10-01	4.65623863222990
2010-11-01	4.36697247706422
2010-12-01	4.04002965159377
2011-01-01	4.12946428571429
2011-02-01	4.26874536005939
2011-03-01	4.48343079922027
2011-04-01	4.57692307692308
2011-05-01	4.36781609195402
2011-06-01	4.60475825019186
2011-07-01	4.37137330754352
2011-08-01	4.38664596273292
2011-09-01	3.89992641648271
2011-10-01	3.97350993377483
2011-11-01	3.90567428150332
2011-12-01	3.68852459016393
2012-01-01	4.16197975253093
2012-02-01	4.16356877323420
2012-03-01	4.34782608695652
2012-04-01	4.53547915142648
2012-05-01	4.47761194029851
2012-06-01	4.20629114850037
2012-07-01	4.11311053984576
2012-08-01	3.99706637330400
2012-09-01	3.91224862888483
2012-10-01	3.94160583941606
2012-11-01	3.66032210834553
2012-12-01	3.63232023721275
2013-01-01	3.73520710059172
2013-02-01	3.92516507703595
2013-03-01	3.62637362637363
2013-04-01	4.22077922077922
2013-05-01	4.17716960749010
2013-06-01	3.70370370370370
2013-07-01	3.38921282798834
2013-08-01	3.76948169626676
2013-09-01	3.48920863309352
2013-10-01	3.71694067190851
2013-11-01	3.49875044626919
2013-12-01	3.21067821067821
2014-01-01	3.40036563071298
2014-02-01	3.32238043081417
2014-03-01	3.53369763205829
2014-04-01	3.75180375180375
2014-05-01	3.71826957454415
2014-06-01	3.63636363636364
2014-07-01	3.65329512893983
2014-08-01	3.27691753691034
2014-09-01	3.38801711840228
2014-10-01	3.23958704165183
2014-11-01	3.03030303030303
2014-12-01	2.97171500179019
2015-01-01	3.22346975733430
2015-02-01	3.18494390155628
2015-03-01	3.14989138305576
2015-04-01	3.55859094176851
2015-05-01	3.31432644333571
2015-06-01	3.21668434075645
2015-07-01	3.17403708987161
2015-08-01	3.21658327376698
2015-09-01	3.13932980599647
2015-10-01	2.76399716513111
2015-11-01	2.92857142857143
2015-12-01	2.68048606147248
2016-01-01	2.83990060347888
2016-02-01	2.79569892473118
2016-03-01	3.01291248206600
2016-04-01	3.34162815499467
2016-05-01	3.18471337579618
2016-06-01	3.17848410757946
2016-07-01	2.83315844700944
2016-08-01	2.84210526315790
2016-09-01	2.69324938789787
2016-10-01	2.62789067974772
2016-11-01	2.78266995420923
2016-12-01	2.46392115452306
2017-01-01	2.64270613107822
2017-02-01	2.63064344116602
2017-03-01	2.73340433084842
2017-04-01	2.97202797202797
2017-05-01	3.11634349030471
2017-06-01	2.88759023719491
2017-07-01	2.55524861878453
2017-08-01	2.59067357512953
2017-09-01	2.71570986593331
2017-10-01	2.51550654720882
2017-11-01	2.48532965136348
2017-12-01	2.46015246015246
2018-01-01	2.22222222222222
2018-02-01	2.31593501555479
2018-03-01	2.35816814764183
2018-04-01	2.39783856805133
2018-05-01	2.27349847302341
2018-06-01	2.40922972514421
2018-07-01	2.30118443316413
2018-08-01	2.33029381965552
2018-09-01	2.28879165264221