Month	Percent
1978-02-01	52.3600047429812
1978-03-01	52.2191953973880
1978-04-01	52.5098962688805
1978-05-01	52.6152611550932
1978-06-01	52.9896536511880
1978-07-01	52.9763251781816
1978-08-01	53.3246038637643
1978-09-01	53.8527315751039
1978-10-01	53.9635164132700
1978-11-01	54.6641474521518
1978-12-01	54.3843147047168
1979-01-01	55.3001447097901
1979-02-01	54.4531706522030
1979-03-01	55.0384110243463
1979-04-01	55.1443265701157
1979-05-01	55.3067476093971
1979-06-01	54.8100292004273
1979-07-01	54.8825872190462
1979-08-01	55.6927987920384
1979-09-01	54.8764205790990
1979-10-01	55.2780257285681
1979-11-01	55.3789564582580
1979-12-01	55.3326286001006
1980-01-01	56.0033492718026
1980-02-01	55.6624850245596
1980-03-01	54.9409750293378
1980-04-01	55.2296824740390
1980-05-01	54.4037225509260
1980-06-01	55.0659231883797
1980-07-01	54.6958987032453
1980-08-01	55.1218698708916
1980-09-01	54.0631200606548
1980-10-01	55.5159873924964
1980-11-01	55.3585961805133
1980-12-01	55.3931609301825
1981-01-01	56.7354753685467
1981-02-01	56.1560616096934
1981-03-01	56.0809489233902
1981-04-01	56.3252802234527
1981-05-01	56.4880772920559
1981-06-01	56.5792579996225
1981-07-01	55.7224168887091
1981-08-01	55.8282739494334
1981-09-01	55.0114811001291
1981-10-01	55.5340257353782
1981-11-01	56.1920138084185
1981-12-01	56.5959400682670
1982-01-01	57.4213256237485
1982-02-01	57.1059745429318
1982-03-01	56.3916048336116
1982-04-01	57.6259625559242
1982-05-01	57.7630821332764
1982-06-01	57.8298384090732
1982-07-01	58.5542934485055
1982-08-01	58.8719653373272
1982-09-01	57.0926075230528
1982-10-01	56.9252500037268
1982-11-01	57.7995954216824
1982-12-01	57.9009294178826
1983-01-01	58.7858955341870
1983-02-01	57.7158593243827
1983-03-01	57.4501755938636
1983-04-01	58.1878481486420
1983-05-01	58.7253943306670
1983-06-01	58.8424472476286
1983-07-01	58.5360137807144
1983-08-01	59.0868517710590
1983-09-01	57.8529831266424
1983-10-01	59.0381625983827
1983-11-01	59.1158507693137
1983-12-01	58.2118311155682
1984-01-01	59.5354799521012
1984-02-01	58.2197243387049
1984-03-01	57.9255415995763
1984-04-01	58.4541517551605
1984-05-01	58.9652070255162
1984-06-01	58.1647871335224
1984-07-01	58.7490366387919
1984-08-01	59.7231553782138
1984-09-01	58.3647306344469
1984-10-01	59.0791905712840
1984-11-01	58.9794507100496
1984-12-01	58.9762024711194
1985-01-01	60.1526770473694
1985-02-01	59.5307500691266
1985-03-01	58.8748714511818
1985-04-01	60.3063620107820
1985-05-01	60.2896125134908
1985-06-01	59.4628853095149
1985-07-01	59.6757690212128
1985-08-01	60.2792648173063
1985-09-01	58.1459599570155
1985-10-01	58.7035568487737
1985-11-01	58.0076491834032
1985-12-01	58.5900906901518
1986-01-01	59.2169369166180
1986-02-01	58.8584882048009
1986-03-01	58.0106478654953
1986-04-01	57.8600991290050
1986-05-01	58.1468495658080
1986-06-01	58.2344278356971
1986-07-01	58.9418226787159
1986-08-01	59.1221681357642
1986-09-01	57.8945456562174
1986-10-01	58.4969546362654
1986-11-01	57.6173017031291
1986-12-01	57.9557642827487
1987-01-01	59.2844132572498
1987-02-01	58.2942561630434
1987-03-01	56.6484798539379
1987-04-01	57.8832912817166
1987-05-01	57.6840902794709
1987-06-01	58.0237615632391
1987-07-01	58.1986059465876
1987-08-01	59.0940423702187
1987-09-01	58.3468029665490
1987-10-01	57.9524052439332
1987-11-01	58.6123455304181
1987-12-01	58.3358638053284
1988-01-01	58.9875579039906
1988-02-01	58.3543418026939
1988-03-01	56.7000576631888
1988-04-01	57.2727916400659
1988-05-01	57.7472446995344
1988-06-01	57.4779228785973
1988-07-01	57.9044470572523
1988-08-01	58.2278811919842
1988-09-01	57.1616945648768
1988-10-01	58.0610661908590
1988-11-01	57.5022956243992
1988-12-01	57.4743191402388
1989-01-01	58.6896665554155
1989-02-01	56.8958624784753
1989-03-01	56.3252546283316
1989-04-01	56.7802388315720
1989-05-01	56.0907507165021
1989-06-01	56.8999612124238
1989-07-01	57.1283512069522
1989-08-01	57.4069758539855
1989-09-01	55.5688786761310
1989-10-01	56.8952875631513
1989-11-01	56.1050906203112
1989-12-01	57.0824975324507
1990-01-01	58.6043040024192
1990-02-01	57.4953154716245
1990-03-01	57.0667623249653
1990-04-01	56.9597739766719
1990-05-01	56.3430405407499
1990-06-01	56.1220182116571
1990-07-01	55.4568188528974
1990-08-01	55.8733166010760
1990-09-01	54.2879058569823
1990-10-01	54.9373462188954
1990-11-01	54.6383776638039
1990-12-01	55.4089742688301
1991-01-01	56.7948876644524
1991-02-01	55.6171034632909
1991-03-01	56.1646822499315
1991-04-01	56.1986883855153
1991-05-01	56.1428782270179
1991-06-01	56.2903893425551
1991-07-01	57.8022320126709
1991-08-01	57.2903950463558
1991-09-01	55.6326968170656
1991-10-01	56.5570967867525
1991-11-01	56.0381061242327
1991-12-01	56.0790198545212
1992-01-01	56.9157574152795
1992-02-01	56.3084037738063
1992-03-01	56.5225809985369
1992-04-01	56.4925357411998
1992-05-01	56.7054820290462
1992-06-01	56.1947607990341
1992-07-01	55.9118598663258
1992-08-01	56.9364181553094
1992-09-01	55.7188085677040
1992-10-01	56.0091399341291
1992-11-01	57.0277884812978
1992-12-01	57.5769645429529
1993-01-01	57.9886262676940
1993-02-01	57.6485624348954
1993-03-01	56.1928942018975
1993-04-01	57.4904659346598
1993-05-01	56.6347653210546
1993-06-01	57.0051520575485
1993-07-01	56.8071456456680
1993-08-01	57.5914491479148
1993-09-01	55.6145557435326
1993-10-01	55.6752492479573
1993-11-01	55.5112761510801
1993-12-01	55.7893934310198
1994-01-01	56.6641247835376
1994-02-01	55.5839605491372
1994-03-01	54.6508244891963
1994-04-01	55.1515543461573
1994-05-01	54.8752634323798
1994-06-01	55.4412389864953
1994-07-01	55.4799536807201
1994-08-01	56.3628771047759
1994-09-01	54.2611534083367
1994-10-01	55.6833540866402
1994-11-01	55.2997760435203
1994-12-01	55.2366018882223
1995-01-01	56.9306417407883
1995-02-01	55.1821157431859
1995-03-01	55.1078733500411
1995-04-01	54.7861554559362
1995-05-01	54.9239528900380
1995-06-01	55.1189815893004
1995-07-01	55.4293575466963
1995-08-01	55.5041909860871
1995-09-01	53.6518052466411
1995-10-01	54.6430977099811
1995-11-01	53.8935980341796
1995-12-01	54.3087840547180
1996-01-01	55.3519324445099
1996-02-01	54.4294469032652
1996-03-01	53.5707066396891
1996-04-01	54.4957598464640
1996-05-01	54.5120994591920
1996-06-01	53.7632385737899
1996-07-01	54.2401670394449
1996-08-01	54.4691374776357
1996-09-01	53.4457482732007
1996-10-01	54.1809327183461
1996-11-01	54.1930456501279
1996-12-01	54.2981989542494
1997-01-01	55.2227395766492
1997-02-01	54.0681673957489
1997-03-01	53.3689424320766
1997-04-01	53.6666814931390
1997-05-01	54.6795039527757
1997-06-01	54.1174001975348
1997-07-01	54.4853569509293
1997-08-01	54.8345387686276
1997-09-01	53.2476844855861
1997-10-01	55.1252212563308
1997-11-01	53.6365456251233
1997-12-01	53.7468707307732
1998-01-01	55.2105203390837
1998-02-01	54.5375103447329
1998-03-01	53.7868469884468
1998-04-01	53.6078044390675
1998-05-01	52.9506866736314
1998-06-01	52.6562069988798
1998-07-01	52.8464674242942
1998-08-01	53.6698229042016
1998-09-01	51.8066836552551
1998-10-01	53.5476448182315
1998-11-01	53.2068646538651
1998-12-01	53.5874791840853
1999-01-01	54.7331143513342
1999-02-01	54.2459482948719
1999-03-01	53.9594922488046
1999-04-01	53.8667603633466
1999-05-01	54.2781287414695
1999-06-01	53.4982366676723
1999-07-01	53.4736987901004
1999-08-01	53.4628622445723
1999-09-01	51.8535275083384
1999-10-01	52.7760277918499
1999-11-01	52.2236892003274
1999-12-01	52.6137581800694
2000-01-01	53.5627365755201
2000-02-01	52.6497294082699
2000-03-01	52.0879598223072
2000-04-01	51.6677657281411
2000-05-01	51.6254773785790
2000-06-01	51.4400502003384
2000-07-01	51.5471931796495
2000-08-01	51.2171144370996
2000-09-01	50.5061119288326
2000-10-01	51.3082141706443
2000-11-01	51.8022013197998
2000-12-01	51.7305846447776
2001-01-01	53.2979230545278
2001-02-01	51.8684736206516
2001-03-01	51.7302068504856
2001-04-01	50.9000839974274
2001-05-01	50.8889918689408
2001-06-01	50.4381215679286
2001-07-01	51.2950967177358
2001-08-01	51.5264220833781
2001-09-01	49.7613089164125
2001-10-01	50.2327364110523
2001-11-01	50.3696589027700
2001-12-01	50.1804871895366
2002-01-01	50.9899361703148
2002-02-01	49.1786504625970
2002-03-01	49.2240902054301
2002-04-01	49.3906675068404
2002-05-01	49.3206017222296
2002-06-01	49.0891398914698
2002-07-01	50.0522507244230
2002-08-01	50.0898989697075
2002-09-01	48.6668097183581
2002-10-01	49.2802637941083
2002-11-01	48.7668784293088
2002-12-01	48.2387996114307
2003-01-01	49.2365619060390
2003-02-01	47.9960713694844
2003-03-01	47.7096167897282
2003-04-01	48.1157333773951
2003-05-01	47.2452740766766
2003-06-01	47.3570686113096
2003-07-01	47.8100146532787
2003-08-01	47.9312314545943
2003-09-01	46.9450621905483
2003-10-01	47.5209287045862
2003-11-01	47.7078834872153
2003-12-01	47.3877718650302
2004-01-01	49.1181223774382
2004-02-01	47.4373133460543
2004-03-01	47.0448558058570
2004-04-01	47.0597844392100
2004-05-01	46.1865522229946
2004-06-01	45.6789638308153
2004-07-01	45.8696154365527
2004-08-01	46.3447931992073
2004-09-01	44.6434710279262
2004-10-01	45.3865755816684
2004-11-01	45.8226759168242
2004-12-01	46.2061119339927
2005-01-01	46.5740485343675
2005-02-01	46.1615313485025
2005-03-01	44.8609326821701
2005-04-01	44.7091646547359
2005-05-01	44.9983592427538
2005-06-01	44.5461572031187
2005-07-01	44.3629730673657
2005-08-01	44.6398284929044
2005-09-01	43.5614829943207
2005-10-01	43.8563774121504
2005-11-01	43.7818786894620
2005-12-01	43.9224410662811
2006-01-01	45.4061479586748
2006-02-01	43.5386378265042
2006-03-01	42.5178700196318
2006-04-01	43.1624044459990
2006-05-01	42.7240004071287
2006-06-01	42.5226483827547
2006-07-01	42.6054500742784
2006-08-01	42.2538111290607
2006-09-01	41.1004089283314
2006-10-01	42.0791091396596
2006-11-01	42.6375772905929
2006-12-01	42.2911917566233
2007-01-01	43.2210370927492
2007-02-01	42.5279169622589
2007-03-01	41.9554104534453
2007-04-01	41.9214518904869
2007-05-01	41.4540893001612
2007-06-01	41.1980531894572
2007-07-01	41.9015147691373
2007-08-01	41.7723084635031
2007-09-01	41.1406577893507
2007-10-01	41.9993802563543
2007-11-01	41.8710114312257
2007-12-01	41.8773470433118
2008-01-01	42.9754554938669
2008-02-01	42.3945968645847
2008-03-01	42.1821825222763
2008-04-01	41.4043463638130
2008-05-01	40.9944804429729
2008-06-01	40.5422390557569
2008-07-01	41.0885883546032
2008-08-01	40.8585296935846
2008-09-01	39.4845920957842
2008-10-01	40.8121067338651
2008-11-01	40.5331785135240
2008-12-01	40.5627358129303
2009-01-01	40.9931282539278
2009-02-01	38.9329262278552
2009-03-01	38.9167177931030
2009-04-01	39.2308818278174
2009-05-01	38.8378161240486
2009-06-01	38.5468957274988
2009-07-01	39.0118929407137
2009-08-01	39.1857628658822
2009-09-01	38.8284513426656
2009-10-01	38.9952057641578
2009-11-01	38.2321826299037
2009-12-01	37.6280870890086
2010-01-01	39.2238723920437
2010-02-01	37.7467106949963
2010-03-01	37.4857407478147
2010-04-01	37.4214941919846
2010-05-01	37.8688489509464
2010-06-01	37.6239562853457
2010-07-01	37.2980980202373
2010-08-01	37.5239748162766
2010-09-01	36.1550127707094
2010-10-01	36.7050189307404
2010-11-01	36.6696858191716
2010-12-01	36.5957313172216
2011-01-01	38.1676462254461
2011-02-01	37.0800070722416
2011-03-01	36.3786892800774
2011-04-01	36.8479600546509
2011-05-01	36.7855820425054
2011-06-01	36.2910384061002
2011-07-01	36.6920947723843
2011-08-01	36.3224434440822
2011-09-01	36.0340195919588
2011-10-01	36.6250203275126
2011-11-01	36.7607056390320
2011-12-01	36.8583004425573
2012-01-01	38.0222401576820
2012-02-01	37.1420254958935
2012-03-01	36.3359447874198
2012-04-01	36.2040813075652
2012-05-01	36.2546528144801
2012-06-01	36.3574241314689
2012-07-01	35.9875687106856
2012-08-01	36.5243071427196
2012-09-01	35.4620582426437
2012-10-01	35.7709881620718
2012-11-01	36.2438362844856
2012-12-01	36.1687685193092
2013-01-01	37.6468461743494
2013-02-01	35.7405823891195
2013-03-01	35.7676622753486
2013-04-01	35.3097661995457
2013-05-01	35.7296718887110
2013-06-01	35.8470596672328
2013-07-01	36.5658010508096
2013-08-01	36.2056323722298
2013-09-01	35.6233817058671
2013-10-01	36.2440523668465
2013-11-01	36.6351164993991
2013-12-01	36.5890652274359
2014-01-01	37.9100903230848
2014-02-01	36.0765403538544
2014-03-01	35.9796772842769
2014-04-01	36.0266370902987
2014-05-01	36.0885250306965
2014-06-01	35.3693654702425
2014-07-01	35.0006366796745
2014-08-01	35.0943811312211
2014-09-01	36.1813475158612
2014-10-01	35.7966473972370
2014-11-01	36.0865694054703
2014-12-01	35.9534331071927
2015-01-01	36.8617988358397
2015-02-01	35.4178723137699
2015-03-01	35.7841279995820
2015-04-01	35.3340026335968
2015-05-01	35.0302103962076
2015-06-01	35.0036216923977
2015-07-01	34.8916609823670
2015-08-01	35.4865207886172
2015-09-01	35.1850494134275
2015-10-01	34.1095628621989
2015-11-01	33.9043681321577
2015-12-01	34.5292120653134
2016-01-01	35.1314250378705
2016-02-01	33.9833232286615
2016-03-01	33.9573861778735
2016-04-01	34.4138087271925
2016-05-01	34.2084117490510
2016-06-01	34.6634950193659
2016-07-01	35.2921526454469
2016-08-01	35.0728341331262
2016-09-01	35.6811113114106
2016-10-01	35.2981028042655
2016-11-01	34.6697300832270
2016-12-01	34.7319024831021
2017-01-01	35.8384954245093
2017-02-01	34.3399542603412
2017-03-01	34.2308979033051
2017-04-01	34.0121046455984
2017-05-01	33.1619194309452
2017-06-01	33.1255265058017
2017-07-01	33.6705947722280
2017-08-01	33.4597110616821
2017-09-01	33.2233192525188
2017-10-01	33.4709274664431
2017-11-01	32.8612981077552
2017-12-01	33.2268053063662
2018-01-01	34.6588028864461
2018-02-01	32.7931308596389
2018-03-01	33.4133797693984
2018-04-01	34.1611787730309
2018-05-01	33.4507915966602
2018-06-01	32.8504830746165
2018-07-01	33.2543057523334
2018-08-01	32.8768975901743
2018-09-01	33.2358655690242