Month	Percent
1978-01-01	2.38365493757094
1978-02-01	2.57615644979316
1978-03-01	2.60821309655938
1978-04-01	2.21777858571169
1978-05-01	2.19017094017094
1978-06-01	2.21788502484031
1978-07-01	2.04667863554758
1978-08-01	2.18608852755194
1978-09-01	2.25347034433027
1978-10-01	2.10621062106211
1978-11-01	2.10030780372986
1978-12-01	2.12532063026750
1979-01-01	2.35446792732666
1979-02-01	2.25116279069767
1979-03-01	2.47479376718607
1979-04-01	2.22541277817660
1979-05-01	1.96390658174098
1979-06-01	1.95801728699947
1979-07-01	2.05128205128205
1979-08-01	2.09517045454545
1979-09-01	1.92857142857143
1979-10-01	1.99075719872023
1979-11-01	1.98817839871037
1979-12-01	1.94439396692713
1980-01-01	2.10565201329886
1980-02-01	2.04910467048182
1980-03-01	2.25004536381782
1980-04-01	2.09405501330967
1980-05-01	1.90174326465927
1980-06-01	1.81818181818182
1980-07-01	1.96044109924733
1980-08-01	2.00562983814215
1980-09-01	1.91631504922644
1980-10-01	1.97391610856539
1980-11-01	2.12879191059074
1980-12-01	2.11887232896391
1981-01-01	2.25413561170696
1981-02-01	2.45499181669394
1981-03-01	2.52100840336134
1981-04-01	2.39594263728576
1981-05-01	2.29645093945720
1981-06-01	2.18560277536860
1981-07-01	2.10727969348659
1981-08-01	2.01224846894138
1981-09-01	2.08223972003500
1981-10-01	2.13324007693653
1981-11-01	2.09028631652907
1981-12-01	2.09815078236131
1982-01-01	2.36334115100126
1982-02-01	2.43111831442464
1982-03-01	2.60038917388997
1982-04-01	2.46399444733646
1982-05-01	2.30082417582418
1982-06-01	2.33958369172544
1982-07-01	2.28452751817238
1982-08-01	2.25537820957668
1982-09-01	2.31954301540592
1982-10-01	2.37808030329140
1982-11-01	2.32275957704975
1982-12-01	2.35355648535565
1983-01-01	2.84960422163588
1983-02-01	2.90237467018470
1983-03-01	2.98507462686567
1983-04-01	2.87904599659284
1983-05-01	2.64487870619946
1983-06-01	2.47516416905203
1983-07-01	2.43778567800914
1983-08-01	2.68069222938582
1983-09-01	2.66011521518129
1983-10-01	2.52499576342993
1983-11-01	2.52818585582508
1983-12-01	2.47962545517600
1984-01-01	2.90237467018470
1984-02-01	2.98559887600984
1984-03-01	3.07267391679613
1984-04-01	2.84119736174531
1984-05-01	2.68907563025210
1984-06-01	2.72712062907813
1984-07-01	2.63998654783925
1984-08-01	2.63157894736842
1984-09-01	2.66287054094791
1984-10-01	2.66689030526669
1984-11-01	2.55542392959892
1984-12-01	2.44028183536690
1985-01-01	2.63568579850876
1985-02-01	2.82642621813768
1985-03-01	2.98098338187425
1985-04-01	2.63555480946785
1985-05-01	2.55000000000000
1985-06-01	2.55681818181818
1985-07-01	2.42434375522488
1985-08-01	2.48697697865905
1985-09-01	2.64037433155080
1985-10-01	2.64169871258987
1985-11-01	2.66307095904264
1985-12-01	2.62525737817433
1986-01-01	2.83748925193465
1986-02-01	2.80599070407988
1986-03-01	3.10537926353300
1986-04-01	3.02426055167830
1986-05-01	2.68835048124793
1986-06-01	2.65120132560066
1986-07-01	2.74198876775686
1986-08-01	2.79986746189529
1986-09-01	2.76856763925729
1986-10-01	2.67131242740999
1986-11-01	2.67513793679987
1986-12-01	2.70956816257409
1987-01-01	3.11057938813878
1987-02-01	3.16455696202532
1987-03-01	3.24697173620458
1987-04-01	3.13117996044825
1987-05-01	3.12448879437265
1987-06-01	2.88099525290555
1987-07-01	2.59484315979635
1987-08-01	2.73950131233596
1987-09-01	2.72757147551758
1987-10-01	2.66359750082210
1987-11-01	2.57298367144978
1987-12-01	2.49708673214583
1988-01-01	2.80813855725576
1988-02-01	2.91786135941980
1988-03-01	2.99351405288542
1988-04-01	2.70138323840521
1988-05-01	2.51531763947114
1988-06-01	2.31017770597738
1988-07-01	2.40788623141564
1988-08-01	2.53041362530414
1988-09-01	2.45329000812348
1988-10-01	2.39024390243902
1988-11-01	2.28496817365758
1988-12-01	2.18894009216590
1989-01-01	2.43414471490497
1989-02-01	2.50872237913275
1989-03-01	2.65095729013255
1989-04-01	2.50441483384171
1989-05-01	2.38360082631495
1989-06-01	2.12327681825384
1989-07-01	2.11077606729091
1989-08-01	2.21973810284254
1989-09-01	2.20517737296261
1989-10-01	2.18745010378413
1989-11-01	2.12800000000000
1989-12-01	1.96583951015147
1990-01-01	2.30316889905260
1990-02-01	2.31308030623880
1990-03-01	2.26070226070226
1990-04-01	2.22608146510894
1990-05-01	2.10641285691996
1990-06-01	2.06217778472114
1990-07-01	1.98779151666928
1990-08-01	2.04885736800630
1990-09-01	2.14363949303708
1990-10-01	2.17391304347826
1990-11-01	1.99842643587726
1990-12-01	1.87153053132435
1991-01-01	2.11200000000000
1991-02-01	2.16000000000000
1991-03-01	2.42443324937028
1991-04-01	2.24910811230029
1991-05-01	2.07373271889401
1991-06-01	2.02020202020202
1991-07-01	2.03014457090126
1991-08-01	2.14076697982443
1991-09-01	2.15219062259800
1991-10-01	2.02066944315903
1991-11-01	2.00803212851406
1991-12-01	1.97266231748990
1992-01-01	2.22292290714173
1992-02-01	2.14531788286878
1992-03-01	2.34654234654235
1992-04-01	2.15053763440860
1992-05-01	2.15936739659367
1992-06-01	2.02250608272506
1992-07-01	2.04861641950772
1992-08-01	2.20048899755501
1992-09-01	2.25954198473282
1992-10-01	2.20632988435788
1992-11-01	2.22425350396100
1992-12-01	2.21436260187606
1993-01-01	2.39286831404442
1993-02-01	2.47454972592013
1993-03-01	2.60182747405916
1993-04-01	2.39329268292683
1993-05-01	2.53853127833182
1993-06-01	2.40181268882175
1993-07-01	2.39212717638153
1993-08-01	2.52088078967350
1993-09-01	2.61080752884032
1993-10-01	2.67857142857143
1993-11-01	2.67152398299939
1993-12-01	2.65933058230170
1994-01-01	2.85271317829457
1994-02-01	3.03077401305564
1994-03-01	3.19704887795881
1994-04-01	2.93139921426413
1994-05-01	2.86356821589205
1994-06-01	2.74857314508862
1994-07-01	2.83559577677225
1994-08-01	3.02251775729182
1994-09-01	3.02709247767519
1994-10-01	3.01332525741975
1994-11-01	2.80060882800609
1994-12-01	2.70104358502149
1995-01-01	3.03734697040136
1995-02-01	3.08431494110353
1995-03-01	3.35272504592774
1995-04-01	3.23556093135773
1995-05-01	3.12781954887218
1995-06-01	3.02621722846442
1995-07-01	3.03166741707939
1995-08-01	3.25644504748982
1995-09-01	3.26738609112710
1995-10-01	3.22629277853158
1995-11-01	3.30954911188705
1995-12-01	3.22629969418960
1996-01-01	3.53286022832459
1996-02-01	3.46856611954165
1996-03-01	3.49138588199421
1996-04-01	3.54567307692308
1996-05-01	3.58744394618834
1996-06-01	3.35411101216978
1996-07-01	3.28282828282828
1996-08-01	3.33532755010470
1996-09-01	3.33879862870771
1996-10-01	3.40858125280311
1996-11-01	3.18106437509423
1996-12-01	3.14112291350531
1997-01-01	3.37437300501596
1997-02-01	3.49384778976151
1997-03-01	3.50270595309681
1997-04-01	3.43341260404281
1997-05-01	3.58037424487992
1997-06-01	3.35974178403756
1997-07-01	3.28569323707087
1997-08-01	3.41246290801187
1997-09-01	3.49577840319953
1997-10-01	3.47993484377314
1997-11-01	3.41368468333583
1997-12-01	3.26217678893566
1998-01-01	3.59082679541340
1998-02-01	3.74981023227570
1998-03-01	4.13979301034948
1998-04-01	4.28910655981003
1998-05-01	4.29474922782762
1998-06-01	4.16237682012061
1998-07-01	3.99408284023669
1998-08-01	4.39739413680782
1998-09-01	4.36331255565450
1998-10-01	4.30586488492947
1998-11-01	4.33418024211628
1998-12-01	4.11392405063291
1999-01-01	4.51241671714113
1999-02-01	4.74524714828897
1999-03-01	5.10081251880831
1999-04-01	5.06837098692033
1999-05-01	4.91585473870682
1999-06-01	4.85638140361267
1999-07-01	4.74561142517108
1999-08-01	4.74566216817440
1999-09-01	4.68634139107222
1999-10-01	4.59684617673312
1999-11-01	4.40956651718984
1999-12-01	4.32750301568154
2000-01-01	4.69177042210750
2000-02-01	4.96799756171899
2000-03-01	5.29260547406623
2000-04-01	5.16263801850194
2000-05-01	4.86286137879911
2000-06-01	4.75412271579260
2000-07-01	4.58003878860212
2000-08-01	4.62755635169428
2000-09-01	4.76900149031297
2000-10-01	4.65219976218787
2000-11-01	4.59958320928848
2000-12-01	4.46415151059672
2001-01-01	4.78787878787879
2001-02-01	4.80812983467314
2001-03-01	5.16721904188008
2001-04-01	5.22220559628909
2001-05-01	5.15831722907685
2001-06-01	5.03275759380584
2001-07-01	4.93199820654611
2001-08-01	5.02467474203679
2001-09-01	5.37779780681989
2001-10-01	5.26710684273709
2001-11-01	5.22064323111444
2001-12-01	5.09833585476551
2002-01-01	5.26960784313726
2002-02-01	5.46012269938650
2002-03-01	5.74119076549210
2002-04-01	5.65809379727685
2002-05-01	5.65440289505428
2002-06-01	5.53549939831528
2002-07-01	5.29092553512210
2002-08-01	5.43756589847869
2002-09-01	5.49351041352249
2002-10-01	5.45838359469240
2002-11-01	5.12043629753068
2002-12-01	5.04818724185406
2003-01-01	5.49297947847554
2003-02-01	5.38949976769398
2003-03-01	5.84732824427481
2003-04-01	5.82789497647594
2003-05-01	5.63677467972871
2003-06-01	5.38553855385539
2003-07-01	5.14950166112957
2003-08-01	5.05234410559854
2003-09-01	5.23520485584218
2003-10-01	5.19046896342389
2003-11-01	5.02436053593179
2003-12-01	4.58659303574168
2004-01-01	5.00077411363988
2004-02-01	5.09998449852736
2004-03-01	5.11128165771297
2004-04-01	5.08731966590737
2004-05-01	4.84995453167626
2004-06-01	4.70104974897307
2004-07-01	4.82769090633065
2004-08-01	4.75685502196637
2004-09-01	4.70248059656064
2004-10-01	4.73363774733638
2004-11-01	4.44717067934366
2004-12-01	4.16473854696900
2005-01-01	4.56373762376238
2005-02-01	4.78260869565217
2005-03-01	4.83099243710449
2005-04-01	4.71611721611722
2005-05-01	4.62096043491392
2005-06-01	4.26403641881639
2005-07-01	4.38476710666060
2005-08-01	4.30221951961082
2005-09-01	4.29392198367100
2005-10-01	4.59561602418745
2005-11-01	4.45362718089991
2005-12-01	4.09013736687760
2006-01-01	4.51592947726570
2006-02-01	4.29191199256275
2006-03-01	4.43213296398892
2006-04-01	4.32391138273491
2006-05-01	4.18681983071342
2006-06-01	4.20574886535552
2006-07-01	4.05960164208606
2006-08-01	4.12934568088660
2006-09-01	4.22535211267606
2006-10-01	4.23408437925299
2006-11-01	3.91410295461468
2006-12-01	3.74249191436932
2007-01-01	4.08258304874263
2007-02-01	4.15444015444015
2007-03-01	4.29053018694453
2007-04-01	4.05999091046811
2007-05-01	3.85774562989753
2007-06-01	3.62647325475975
2007-07-01	3.54480450327096
2007-08-01	3.75779704853187
2007-09-01	4.08752469229600
2007-10-01	4.11666413489291
2007-11-01	3.72793670115642
2007-12-01	3.54294478527607
2008-01-01	3.94065832174316
2008-02-01	4.11700975081257
2008-03-01	4.12498076035093
2008-04-01	4.17806137951990
2008-05-01	4.06528638355750
2008-06-01	4.02063419814899
2008-07-01	3.91437308868502
2008-08-01	4.14570949550373
2008-09-01	4.12276683463124
2008-10-01	3.90505359877489
2008-11-01	3.89967884997706
2008-12-01	4.15704387990762
2009-01-01	4.28262213976500
2009-02-01	4.61371729369871
2009-03-01	5.14524103831891
2009-04-01	5.27039413382218
2009-05-01	5.27037319116527
2009-06-01	5.31556372549020
2009-07-01	5.48639926233287
2009-08-01	5.52410099464422
2009-09-01	5.54876184653011
2009-10-01	5.27611136748193
2009-11-01	5.09259259259259
2009-12-01	4.90911915488582
2010-01-01	5.00621890547264
2010-02-01	5.03900156006240
2010-03-01	5.42635658914729
2010-04-01	5.47608060298416
2010-05-01	5.32535297728668
2010-06-01	5.27854724530625
2010-07-01	5.08029647930822
2010-08-01	5.17639808966261
2010-09-01	5.19460619062213
2010-10-01	5.14004309018159
2010-11-01	4.91244382457772
2010-12-01	4.63957652187451
2011-01-01	4.82360287230721
2011-02-01	4.71138845553822
2011-03-01	4.95098039215686
2011-04-01	4.98140061458839
2011-05-01	4.72962066182405
2011-06-01	4.72797927461140
2011-07-01	4.73941368078176
2011-08-01	4.49566781101847
2011-09-01	4.28282199034418
2011-10-01	4.46831698583217
2011-11-01	4.34444098411710
2011-12-01	4.29332497649640
2012-01-01	4.52978056426332
2012-02-01	4.51915559030493
2012-03-01	4.76711472335105
2012-04-01	4.87767110560545
2012-05-01	4.59467821782178
2012-06-01	4.45475638051044
2012-07-01	4.45998445998446
2012-08-01	4.30057444496196
2012-09-01	4.24345671364411
2012-10-01	4.19050564403897
2012-11-01	4.02111473373700
2012-12-01	4.04578955621766
2013-01-01	4.24033797527773
2013-02-01	4.30711610486891
2013-03-01	4.36408977556110
2013-04-01	4.47461811448850
2013-05-01	4.29428967215638
2013-06-01	4.01234567901235
2013-07-01	3.96776193428394
2013-08-01	4.18662135022401
2013-09-01	3.97350993377483
2013-10-01	4.05779280664002
2013-11-01	3.82664822498847
2013-12-01	3.49053676698728
2014-01-01	3.73029498985485
2014-02-01	3.61821584529008
2014-03-01	3.83540372670807
2014-04-01	3.92096326026551
2014-05-01	3.71393492940454
2014-06-01	3.77416385394293
2014-07-01	3.82126348228043
2014-08-01	3.56206630686199
2014-09-01	3.57416781714987
2014-10-01	3.59667998770366
2014-11-01	3.39453787995680
2014-12-01	3.24625135260473
2015-01-01	3.58472998137803
2015-02-01	3.49107835531420
2015-03-01	3.54147250698975
2015-04-01	3.62285183464933
2015-05-01	3.44721452754694
2015-06-01	3.42979635584137
2015-07-01	3.40576359993836
2015-08-01	3.45359235275979
2015-09-01	3.45143555284056
2015-10-01	3.17338647861414
2015-11-01	3.22530864197531
2015-12-01	3.14717679728479
2016-01-01	3.23275862068966
2016-02-01	3.28325847916989
2016-03-01	3.33695483470433
2016-04-01	3.44615384615385
2016-05-01	3.29048056320784
2016-06-01	3.18354912414318
2016-07-01	3.08632543926662
2016-08-01	3.22383498854087
2016-09-01	3.07645446238197
2016-10-01	2.95596525978973
2016-11-01	3.00153139356815
2016-12-01	2.93712712253327
2017-01-01	3.00291098513865
2017-02-01	2.88892321952727
2017-03-01	2.88981610261165
2017-04-01	2.99877600979192
2017-05-01	3.16906747536012
2017-06-01	2.90425049160490
2017-07-01	2.89877067840340
2017-08-01	2.86624203821656
2017-09-01	2.87139186942723
2017-10-01	2.70965788676960
2017-11-01	2.68996960486322
2017-12-01	2.63598963888466
2018-01-01	2.42230347349177
2018-02-01	2.49543517954960
2018-03-01	2.58620689655172
2018-04-01	2.68204974528019
2018-05-01	2.35065129510406
2018-06-01	2.50037430753107
2018-07-01	2.56641152633949
2018-08-01	2.51572327044025
2018-09-01	2.42007768150583