Month	Percent
1978-02-01	27.0368023406241
1978-03-01	26.4171182784059
1978-04-01	26.2132432341956
1978-05-01	26.2863028313253
1978-06-01	26.4021048112138
1978-07-01	26.5796596576297
1978-08-01	26.5334378834501
1978-09-01	26.3603341948384
1978-10-01	26.3253648106107
1978-11-01	26.2185629538303
1978-12-01	26.2994203315249
1979-01-01	28.3311080976327
1979-02-01	26.7412909746344
1979-03-01	25.9930992227157
1979-04-01	26.1623476420992
1979-05-01	26.6674794914865
1979-06-01	26.3900300170425
1979-07-01	26.4247753839019
1979-08-01	26.7924249645024
1979-09-01	25.9997838101125
1979-10-01	25.6099019939270
1979-11-01	25.8676907215379
1979-12-01	26.1631113173856
1980-01-01	27.9225192991558
1980-02-01	26.1302447032651
1980-03-01	25.3352623885935
1980-04-01	26.1204987860169
1980-05-01	25.9695258792402
1980-06-01	25.8777006281862
1980-07-01	25.6596647586622
1980-08-01	25.8474796159049
1980-09-01	25.3105962207699
1980-10-01	25.7718221575074
1980-11-01	25.7738743677893
1980-12-01	25.8613449019212
1981-01-01	27.7552364200628
1981-02-01	26.2538155726669
1981-03-01	25.2788507453888
1981-04-01	25.5183440390126
1981-05-01	25.7743095147090
1981-06-01	25.8157003875749
1981-07-01	25.7231597995640
1981-08-01	25.8791222576465
1981-09-01	24.8988276318611
1981-10-01	25.4677393983422
1981-11-01	25.4098468614909
1981-12-01	25.7733546050934
1982-01-01	27.5801726856307
1982-02-01	25.8258509355307
1982-03-01	25.0258264304171
1982-04-01	25.7925841216282
1982-05-01	25.7051702294548
1982-06-01	25.7454216454651
1982-07-01	25.5896159651199
1982-08-01	25.9121052897016
1982-09-01	25.1148732231286
1982-10-01	25.1723828217136
1982-11-01	25.3711592327226
1982-12-01	25.6333075011702
1983-01-01	27.9564512917889
1983-02-01	25.6609585853042
1983-03-01	24.9066807052907
1983-04-01	25.8850688152357
1983-05-01	25.6520848023649
1983-06-01	25.7805152746055
1983-07-01	25.5695178823598
1983-08-01	26.0376735796103
1983-09-01	24.9291496767615
1983-10-01	25.7118844209592
1983-11-01	25.6018339480686
1983-12-01	25.7083403556829
1984-01-01	27.6971383350252
1984-02-01	25.7244423713330
1984-03-01	24.3507615259172
1984-04-01	24.8824748484766
1984-05-01	25.0521640013780
1984-06-01	24.9132331483797
1984-07-01	25.0985503138639
1984-08-01	25.4537332693534
1984-09-01	24.3382749529744
1984-10-01	24.7926596739091
1984-11-01	24.7933239807956
1984-12-01	24.8560438700278
1985-01-01	26.9733115665289
1985-02-01	24.7076488677754
1985-03-01	23.8297357073896
1985-04-01	25.0810087661019
1985-05-01	24.5417724661840
1985-06-01	24.5390520724346
1985-07-01	24.4111465214358
1985-08-01	24.4981850360881
1985-09-01	23.8258038369053
1985-10-01	24.3793714432588
1985-11-01	23.1904889075775
1985-12-01	23.5995990860074
1986-01-01	25.5423099965119
1986-02-01	23.3549262815827
1986-03-01	22.4044184964900
1986-04-01	22.7578929735395
1986-05-01	22.7979229271015
1986-06-01	22.5388971191536
1986-07-01	22.3441677654133
1986-08-01	22.9416497863816
1986-09-01	21.9305476052482
1986-10-01	22.2521447655949
1986-11-01	22.4091977183628
1986-12-01	22.5512053477461
1987-01-01	24.7013568181478
1987-02-01	22.7867214301813
1987-03-01	21.4376033728047
1987-04-01	22.1509707348055
1987-05-01	22.2076978499391
1987-06-01	22.2191757405031
1987-07-01	22.2360135772474
1987-08-01	22.3678262449047
1987-09-01	21.8994599669204
1987-10-01	22.4282481285715
1987-11-01	22.5415305558095
1987-12-01	22.1744551488908
1988-01-01	23.7663415758475
1988-02-01	22.2762692882782
1988-03-01	20.9835456118670
1988-04-01	20.9949650191576
1988-05-01	21.4162524383652
1988-06-01	21.4788743853154
1988-07-01	22.1077959796985
1988-08-01	22.1980245298010
1988-09-01	20.8078063973511
1988-10-01	21.4964973103224
1988-11-01	21.2550773203056
1988-12-01	21.2914655480992
1989-01-01	23.3017244713834
1989-02-01	21.5765920058318
1989-03-01	20.9855655574214
1989-04-01	20.7477742899192
1989-05-01	20.4922574103552
1989-06-01	20.8535827082687
1989-07-01	20.8761249493526
1989-08-01	20.8824266894034
1989-09-01	19.8073293095200
1989-10-01	20.6440847364683
1989-11-01	19.7986153077179
1989-12-01	19.8942634945878
1990-01-01	21.9875549452059
1990-02-01	19.9718583115219
1990-03-01	19.4527092630084
1990-04-01	19.7150108489193
1990-05-01	19.3969043379084
1990-06-01	19.4004304922909
1990-07-01	19.6633085402770
1990-08-01	20.1009333610630
1990-09-01	19.2232184687043
1990-10-01	20.0058630121081
1990-11-01	19.9194544096832
1990-12-01	19.8640796984365
1991-01-01	21.6425062606146
1991-02-01	19.7866540977931
1991-03-01	19.2550134187585
1991-04-01	19.1224790349793
1991-05-01	19.3096611293610
1991-06-01	19.6683256318149
1991-07-01	20.2693649897433
1991-08-01	19.9097592839519
1991-09-01	19.0266524251448
1991-10-01	20.1749438427482
1991-11-01	20.2349178884811
1991-12-01	20.0837835721418
1992-01-01	21.4831092256764
1992-02-01	19.8713308479920
1992-03-01	19.5187672347660
1992-04-01	19.9693941895227
1992-05-01	20.0463767261213
1992-06-01	19.9342407995975
1992-07-01	20.0488016925346
1992-08-01	20.3429086554495
1992-09-01	19.5206999006198
1992-10-01	20.0531989966146
1992-11-01	20.3174666126042
1992-12-01	20.0573035844537
1993-01-01	21.6240085068743
1993-02-01	20.5053966401915
1993-03-01	19.7898336290810
1993-04-01	20.7033782337023
1993-05-01	20.3370464877294
1993-06-01	20.2163239552757
1993-07-01	20.5574563616708
1993-08-01	20.5316296829533
1993-09-01	19.4922375878125
1993-10-01	19.8076790376181
1993-11-01	19.8184468177439
1993-12-01	19.9838664217687
1994-01-01	21.9317033888032
1994-02-01	20.3373168036376
1994-03-01	20.0979130115505
1994-04-01	20.4967449679880
1994-05-01	20.3803947400060
1994-06-01	20.2461313134760
1994-07-01	20.0020686883522
1994-08-01	20.6165272677298
1994-09-01	19.0910609831900
1994-10-01	20.2685812609825
1994-11-01	20.1963273624792
1994-12-01	20.0601004401250
1995-01-01	21.5183896209615
1995-02-01	19.9541284701314
1995-03-01	19.5478326133009
1995-04-01	19.8133698715212
1995-05-01	19.6152729409567
1995-06-01	19.4399537015183
1995-07-01	19.4439590194963
1995-08-01	19.7132842384724
1995-09-01	18.7660471000177
1995-10-01	19.5000698724210
1995-11-01	18.9876041853251
1995-12-01	19.1738081030083
1996-01-01	20.8184942506412
1996-02-01	19.3078381267037
1996-03-01	19.2779051838350
1996-04-01	19.9742301253664
1996-05-01	19.5983829894820
1996-06-01	19.7600005185092
1996-07-01	19.7412059913215
1996-08-01	19.8329314750566
1996-09-01	19.0055878288475
1996-10-01	19.7482732230330
1996-11-01	19.7559678823583
1996-12-01	19.5875890403650
1997-01-01	20.9309966553427
1997-02-01	19.4060480284354
1997-03-01	19.5065170467870
1997-04-01	19.7585044737634
1997-05-01	19.7480386782717
1997-06-01	19.8722749975918
1997-07-01	19.6909865477699
1997-08-01	20.4151140732262
1997-09-01	18.9726357830206
1997-10-01	20.0404053798349
1997-11-01	19.7309673356205
1997-12-01	19.9274457730773
1998-01-01	21.4467218381753
1998-02-01	19.9675743062746
1998-03-01	19.8424221151234
1998-04-01	19.9900780764945
1998-05-01	20.0008707953759
1998-06-01	19.8350436472477
1998-07-01	19.8028493814633
1998-08-01	20.2142844778445
1998-09-01	18.9753431424572
1998-10-01	19.7843511710215
1998-11-01	20.0382019225062
1998-12-01	19.8551506048814
1999-01-01	21.4502575475643
1999-02-01	20.1390091582095
1999-03-01	19.9933915589630
1999-04-01	20.2079724322061
1999-05-01	20.1842026713837
1999-06-01	20.0772720068166
1999-07-01	20.1566042269172
1999-08-01	20.5558660931062
1999-09-01	19.2957831713803
1999-10-01	19.9700521713405
1999-11-01	20.1725533068695
1999-12-01	19.6084399811282
2000-01-01	21.5221998298856
2000-02-01	20.0580579391027
2000-03-01	19.6836430891808
2000-04-01	19.6229387264283
2000-05-01	19.7362946035211
2000-06-01	19.3902584758586
2000-07-01	19.2488816894904
2000-08-01	19.6482975937220
2000-09-01	18.6488317247878
2000-10-01	19.6330968371894
2000-11-01	19.9358948615065
2000-12-01	19.5416991044997
2001-01-01	21.1737056114902
2001-02-01	19.5876928211341
2001-03-01	19.6142850728903
2001-04-01	18.9186723138457
2001-05-01	19.2230807752671
2001-06-01	19.1517215696909
2001-07-01	19.4736767167099
2001-08-01	19.4957071662267
2001-09-01	18.6812055827104
2001-10-01	19.2114469376741
2001-11-01	19.4722375963582
2001-12-01	19.3608513896485
2002-01-01	20.1409485345782
2002-02-01	19.4777979872690
2002-03-01	19.2661140520084
2002-04-01	19.4264304239922
2002-05-01	19.4008965478856
2002-06-01	18.9749509806708
2002-07-01	19.4080510709291
2002-08-01	19.2733063348418
2002-09-01	18.4078219993176
2002-10-01	19.2781194549507
2002-11-01	18.8260105114954
2002-12-01	18.5549171128004
2003-01-01	19.4663767652830
2003-02-01	18.2961894479451
2003-03-01	18.5237085007223
2003-04-01	18.6712674103916
2003-05-01	18.7089683782833
2003-06-01	18.7410202499579
2003-07-01	19.2877693285397
2003-08-01	19.3866368916271
2003-09-01	18.2749450411392
2003-10-01	19.0531297980950
2003-11-01	19.3279938249702
2003-12-01	19.0901171870597
2004-01-01	20.2407177934849
2004-02-01	19.3091293500177
2004-03-01	19.0995041465558
2004-04-01	19.2483507340225
2004-05-01	19.2106256343780
2004-06-01	19.1930334924754
2004-07-01	19.4260784944330
2004-08-01	19.5398791506480
2004-09-01	18.5388160096340
2004-10-01	19.0190308456483
2004-11-01	18.9307296582111
2004-12-01	18.7094091243632
2005-01-01	19.6965336077940
2005-02-01	18.2404772584248
2005-03-01	17.8724103413976
2005-04-01	18.0326762444734
2005-05-01	17.8748479697450
2005-06-01	17.7514372323116
2005-07-01	18.2131898698427
2005-08-01	18.1023912936593
2005-09-01	17.2144213818113
2005-10-01	17.9288074057363
2005-11-01	18.1922870255172
2005-12-01	17.7294521830240
2006-01-01	18.9417060794583
2006-02-01	18.0728351720479
2006-03-01	17.7999279547395
2006-04-01	17.9258971832773
2006-05-01	17.6332718735869
2006-06-01	17.6114586824082
2006-07-01	17.7052565922945
2006-08-01	18.0289521964918
2006-09-01	16.8530590610982
2006-10-01	17.8857939894751
2006-11-01	17.8182295598151
2006-12-01	17.1752285729568
2007-01-01	18.7324857814886
2007-02-01	17.3530737570098
2007-03-01	17.1835862073213
2007-04-01	17.5449226172056
2007-05-01	17.3382172203330
2007-06-01	17.1314457384249
2007-07-01	17.3430295100091
2007-08-01	17.5641148931001
2007-09-01	16.2944898002881
2007-10-01	17.1591100288528
2007-11-01	16.9939371401523
2007-12-01	16.6249130111487
2008-01-01	17.9953819873443
2008-02-01	16.8621958044160
2008-03-01	16.6389218205554
2008-04-01	16.8379370470819
2008-05-01	16.8565886022723
2008-06-01	16.7244844723052
2008-07-01	17.0329884750952
2008-08-01	17.1461711995701
2008-09-01	16.3701599261640
2008-10-01	16.7329710309029
2008-11-01	16.8855864992127
2008-12-01	16.6272226243750
2009-01-01	17.6903621321339
2009-02-01	16.6035203507010
2009-03-01	16.7935895552049
2009-04-01	16.8972145990563
2009-05-01	16.5493818729886
2009-06-01	16.9490597810280
2009-07-01	17.1560737744183
2009-08-01	17.5623349494465
2009-09-01	16.5667498752800
2009-10-01	17.2870438823934
2009-11-01	17.6392118101013
2009-12-01	17.3689574444933
2010-01-01	18.2447674561560
2010-02-01	17.4593774970933
2010-03-01	17.3707518720111
2010-04-01	17.5324312876276
2010-05-01	17.3403521276451
2010-06-01	17.1695231567182
2010-07-01	17.3051589694778
2010-08-01	17.3680657083160
2010-09-01	16.2817958684656
2010-10-01	16.7235316226445
2010-11-01	16.8277593363544
2010-12-01	16.6565840666714
2011-01-01	17.8213981118077
2011-02-01	16.9068965472798
2011-03-01	16.5334345196984
2011-04-01	16.9035782370095
2011-05-01	16.7708113017986
2011-06-01	16.8530895765023
2011-07-01	16.8466092346017
2011-08-01	17.3881364921263
2011-09-01	16.3326321628836
2011-10-01	16.8685200099005
2011-11-01	16.9311400797260
2011-12-01	16.9703871089740
2012-01-01	18.1789772759802
2012-02-01	17.1088749880368
2012-03-01	16.7700574392515
2012-04-01	17.2610128699343
2012-05-01	16.9382806628124
2012-06-01	17.2545337305943
2012-07-01	17.2413744692753
2012-08-01	17.6980373039312
2012-09-01	16.3420142861547
2012-10-01	17.0944587638990
2012-11-01	17.3363838792486
2012-12-01	17.1013518488658
2013-01-01	18.0122926376469
2013-02-01	16.8144807097104
2013-03-01	16.7001510971223
2013-04-01	16.9363630531626
2013-05-01	16.9105360084078
2013-06-01	16.7268607409511
2013-07-01	17.2423425601366
2013-08-01	17.6256673522559
2013-09-01	16.6071280524572
2013-10-01	17.0286732408780
2013-11-01	17.1949855121875
2013-12-01	17.1516422373378
2014-01-01	18.1341471055222
2014-02-01	16.7807854679051
2014-03-01	16.8613316333464
2014-04-01	17.1452204657676
2014-05-01	17.0462623058875
2014-06-01	17.1929941506817
2014-07-01	17.3191406722289
2014-08-01	17.0811716955857
2014-09-01	17.1465601439167
2014-10-01	17.2339188551050
2014-11-01	17.3959708104982
2014-12-01	17.0030295368853
2015-01-01	17.9578447410499
2015-02-01	16.1552969862849
2015-03-01	16.3866143589653
2015-04-01	16.6962009278814
2015-05-01	16.3850106296793
2015-06-01	16.7068436121152
2015-07-01	16.5946100656448
2015-08-01	16.5261399091493
2015-09-01	16.5710691244277
2015-10-01	16.6378553203516
2015-11-01	16.5084727894228
2015-12-01	16.4917937857013
2016-01-01	17.2890960874328
2016-02-01	16.0055705488032
2016-03-01	16.4779109146439
2016-04-01	16.5759387050526
2016-05-01	16.4356272766303
2016-06-01	16.5193429877406
2016-07-01	16.5541244783907
2016-08-01	16.8649544562491
2016-09-01	16.6872255211075
2016-10-01	16.6297963019443
2016-11-01	16.3402921743499
2016-12-01	16.3494103834736
2017-01-01	17.8607933636389
2017-02-01	15.9247944080910
2017-03-01	16.0119803431262
2017-04-01	16.0305998411326
2017-05-01	15.9749381929716
2017-06-01	16.0227923589512
2017-07-01	16.2211642749233
2017-08-01	16.2175014963937
2017-09-01	16.0499012027335
2017-10-01	15.9004451827773
2017-11-01	15.5130871125685
2017-12-01	15.1739209029267
2018-01-01	16.4598451678943
2018-02-01	15.1008449018274
2018-03-01	15.2802826886602
2018-04-01	15.2774086296690
2018-05-01	15.3668881357246
2018-06-01	15.4308951433659
2018-07-01	15.6579113375007
2018-08-01	15.8158654152551
2018-09-01	15.8326475526784