Month	Percent
1978-02-01	21.0200354033020
1978-03-01	21.5347555095002
1978-04-01	21.7708009511725
1978-05-01	22.0218693159176
1978-06-01	21.9270871178378
1978-07-01	21.9192059671775
1978-08-01	21.9750085533756
1978-09-01	21.2436499145663
1978-10-01	21.8609133202499
1978-11-01	21.3410516586284
1978-12-01	21.0796962221762
1979-01-01	20.3165532981469
1979-02-01	21.1512540939947
1979-03-01	21.1493012997840
1979-04-01	20.5863473089411
1979-05-01	20.5508845518334
1979-06-01	20.6675988047037
1979-07-01	20.3685535243405
1979-08-01	19.7925852089130
1979-09-01	20.3438166805519
1979-10-01	20.0591876253748
1979-11-01	20.3980351247904
1979-12-01	19.8823838892316
1980-01-01	19.4519997365084
1980-02-01	20.3880526710074
1980-03-01	21.1618399942644
1980-04-01	21.0163177157066
1980-05-01	21.7351487031496
1980-06-01	21.2589190257988
1980-07-01	22.0493338938985
1980-08-01	21.4207390771265
1980-09-01	22.4136833252566
1980-10-01	21.3576143434848
1980-11-01	21.3667405683982
1980-12-01	21.2719594964633
1981-01-01	20.4717021747747
1981-02-01	20.4889430108244
1981-03-01	20.4578342133267
1981-04-01	20.3158271583799
1981-05-01	20.4302228884198
1981-06-01	20.0899314516914
1981-07-01	20.9369432179695
1981-08-01	20.9611485205103
1981-09-01	21.6035723554458
1981-10-01	21.4581881918877
1981-11-01	20.8467561172723
1981-12-01	20.9164599778076
1982-01-01	19.2508339268430
1982-02-01	19.8130451000486
1982-03-01	20.3165594148333
1982-04-01	19.7649032364007
1982-05-01	18.9739110405222
1982-06-01	19.1782179718912
1982-07-01	18.1035007313760
1982-08-01	17.7093238283664
1982-09-01	19.1298259494378
1982-10-01	20.5508907291020
1982-11-01	19.9057316985735
1982-12-01	20.1491363005955
1983-01-01	19.2285963338819
1983-02-01	20.4281910671402
1983-03-01	21.1967591735074
1983-04-01	19.8520525134496
1983-05-01	19.4775412696043
1983-06-01	19.6853233177586
1983-07-01	19.9225955971572
1983-08-01	19.8982854001141
1983-09-01	20.1763919274463
1983-10-01	19.6735186878973
1983-11-01	19.5943497004499
1983-12-01	20.6560412187801
1984-01-01	18.9303257700869
1984-02-01	20.4774203853595
1984-03-01	20.5475302184249
1984-04-01	20.0558206181742
1984-05-01	19.6723311203988
1984-06-01	20.1070948140173
1984-07-01	20.1375729596371
1984-08-01	19.1693366782037
1984-09-01	20.0989574255450
1984-10-01	19.9184895499228
1984-11-01	20.2985366800906
1984-12-01	20.3746660870580
1985-01-01	19.1324763739572
1985-02-01	19.4860171195832
1985-03-01	19.9937773227907
1985-04-01	18.8110823859684
1985-05-01	18.7794126002086
1985-06-01	19.5795826773502
1985-07-01	19.6536521687047
1985-08-01	18.6821730610020
1985-09-01	20.2167673465209
1985-10-01	19.9158870658213
1985-11-01	19.8749351841178
1985-12-01	19.4843894637556
1986-01-01	19.3113878522703
1986-02-01	20.2142038079161
1986-03-01	21.2142027406330
1986-04-01	21.0576527536794
1986-05-01	21.0032032297971
1986-06-01	20.3184009305283
1986-07-01	20.2596966447031
1986-08-01	20.0245540973780
1986-09-01	20.9368364127009
1986-10-01	20.5431013382390
1986-11-01	21.7032744177778
1986-12-01	21.0424906096569
1987-01-01	20.6191047806486
1987-02-01	21.2690321995424
1987-03-01	22.7905775885786
1987-04-01	21.4580267953307
1987-05-01	22.4620844317875
1987-06-01	21.6888220822443
1987-07-01	21.8890350038449
1987-08-01	21.2690271507757
1987-09-01	21.5664961866613
1987-10-01	21.2042765016903
1987-11-01	20.9622378726589
1987-12-01	20.9184452574929
1988-01-01	20.2809624424356
1988-02-01	20.4069711378371
1988-03-01	22.3040831075342
1988-04-01	21.4321375098593
1988-05-01	22.1373879690218
1988-06-01	22.0416097832929
1988-07-01	21.8030993736513
1988-08-01	22.1665644296052
1988-09-01	22.7682733959746
1988-10-01	22.5203876648419
1988-11-01	22.8909651717789
1988-12-01	23.5371723221221
1989-01-01	21.5506909230623
1989-02-01	22.7717487411844
1989-03-01	23.4846157929407
1989-04-01	22.5189268969322
1989-05-01	23.9942737599649
1989-06-01	23.2802485691770
1989-07-01	22.3703681169996
1989-08-01	22.0929910873928
1989-09-01	23.9041869387833
1989-10-01	22.7206704532006
1989-11-01	23.1500044870786
1989-12-01	22.6407579138695
1990-01-01	21.6134021559318
1990-02-01	22.6234991139842
1990-03-01	23.0576330197291
1990-04-01	23.3860471029350
1990-05-01	23.7246879270100
1990-06-01	24.1232553416500
1990-07-01	24.8005080913718
1990-08-01	24.1731132527920
1990-09-01	25.8672609634753
1990-10-01	25.0395543055526
1990-11-01	25.9844489846791
1990-12-01	25.0830838973245
1991-01-01	23.5781626355659
1991-02-01	24.7308715692967
1991-03-01	24.3575062785503
1991-04-01	24.2192362431678
1991-05-01	24.9524295619512
1991-06-01	24.6711408557706
1991-07-01	23.1773708203351
1991-08-01	23.8121002076345
1991-09-01	24.8697926043936
1991-10-01	24.6681754285934
1991-11-01	24.7563347871304
1991-12-01	24.9272124044727
1992-01-01	23.3132537957687
1992-02-01	24.2158371565442
1992-03-01	24.3272891011348
1992-04-01	24.6134986041165
1992-05-01	24.1298693822819
1992-06-01	24.2962897716002
1992-07-01	24.7422764026380
1992-08-01	23.9962583971767
1992-09-01	25.1539903081834
1992-10-01	23.9937757554640
1992-11-01	24.6006441443779
1992-12-01	24.0416570069482
1993-01-01	23.7555853608273
1993-02-01	23.9736918300083
1993-03-01	25.1403217554113
1993-04-01	24.3590685585513
1993-05-01	24.8837359890529
1993-06-01	24.3447360238503
1993-07-01	25.3385952577081
1993-08-01	24.4389978570991
1993-09-01	26.3984887034454
1993-10-01	25.8164984479116
1993-11-01	25.9619101892325
1993-12-01	25.0801360087462
1994-01-01	23.8741268774152
1994-02-01	25.1929885498044
1994-03-01	26.1684154374397
1994-04-01	26.3014836038746
1994-05-01	26.5317704167348
1994-06-01	26.1936548176042
1994-07-01	26.5082311516156
1994-08-01	25.2926434818477
1994-09-01	27.7467127318465
1994-10-01	26.3026629266390
1994-11-01	26.7050247893677
1994-12-01	26.7061533390529
1995-01-01	24.7863907220809
1995-02-01	26.0804248205290
1995-03-01	26.9954250426750
1995-04-01	27.6467245232449
1995-05-01	27.4658859561347
1995-06-01	27.6860841794519
1995-07-01	27.0173066105391
1995-08-01	26.7395237613401
1995-09-01	28.1485498799180
1995-10-01	27.6296876684824
1995-11-01	28.8360884699692
1995-12-01	29.0039663464722
1996-01-01	27.9792510429922
1996-02-01	29.0109701534937
1996-03-01	29.9601607421671
1996-04-01	28.8625371841669
1996-05-01	29.0649365950258
1996-06-01	29.6394378346105
1996-07-01	29.3173338284636
1996-08-01	29.8462838558817
1996-09-01	30.1864042347230
1996-10-01	29.7469097650777
1996-11-01	29.5823877286191
1996-12-01	29.4033323517584
1997-01-01	28.0907322364478
1997-02-01	29.2919249298663
1997-03-01	30.5890495105140
1997-04-01	30.2129725874640
1997-05-01	29.7620600667208
1997-06-01	30.2113386477353
1997-07-01	30.0279791661341
1997-08-01	29.3243687151123
1997-09-01	30.8740900038811
1997-10-01	28.5072430096988
1997-11-01	30.8292575538001
1997-12-01	30.0011176147912
1998-01-01	28.4373934917698
1998-02-01	29.7223384073247
1998-03-01	30.2475134188152
1998-04-01	30.9279109077033
1998-05-01	31.2717749170567
1998-06-01	31.3363183936806
1998-07-01	31.8355842079794
1998-08-01	30.9622377253804
1998-09-01	31.9351481569395
1998-10-01	30.8986033756366
1998-11-01	31.3520107843197
1998-12-01	31.1442843780378
1999-01-01	29.7113523485673
1999-02-01	29.4638626042812
1999-03-01	30.5126102431408
1999-04-01	31.2727298762995
1999-05-01	30.5469569673614
1999-06-01	30.8091594165614
1999-07-01	31.1763523180712
1999-08-01	30.3696266709984
1999-09-01	33.2929546209483
1999-10-01	32.1849808073605
1999-11-01	33.0233157206970
1999-12-01	32.6392590235347
2000-01-01	31.8510162344681
2000-02-01	32.7082089130977
2000-03-01	33.7790897639450
2000-04-01	34.6902592948614
2000-05-01	34.4647992635739
2000-06-01	34.4946531669577
2000-07-01	35.1602488840109
2000-08-01	35.2275086115048
2000-09-01	35.1896423775346
2000-10-01	34.9202488944118
2000-11-01	34.0367466553118
2000-12-01	34.0930379074523
2001-01-01	32.4822207829233
2001-02-01	34.8152248846565
2001-03-01	35.3198735439510
2001-04-01	36.3185236815944
2001-05-01	36.1326913687287
2001-06-01	36.8567711260742
2001-07-01	36.0248873145888
2001-08-01	35.6456450368408
2001-09-01	37.1725299613409
2001-10-01	37.0301129152026
2001-11-01	37.1459439609573
2001-12-01	37.0276720018024
2002-01-01	36.1553579021588
2002-02-01	38.0411629057406
2002-03-01	38.2606222390266
2002-04-01	37.7266561975859
2002-05-01	37.6515652983435
2002-06-01	37.8529410337809
2002-07-01	37.3864861454473
2002-08-01	37.8398214143664
2002-09-01	38.4516902587781
2002-10-01	38.3799831860337
2002-11-01	38.1884282234416
2002-12-01	38.8990771763508
2003-01-01	37.6652105494271
2003-02-01	38.9201892495312
2003-03-01	39.4614987671231
2003-04-01	39.1272118984364
2003-05-01	40.5224238630611
2003-06-01	40.4848909448426
2003-07-01	39.8333940038636
2003-08-01	39.2388356507622
2003-09-01	40.4831826520439
2003-10-01	39.5674542327958
2003-11-01	39.9213874934048
2003-12-01	39.7925828126156
2004-01-01	38.0815936035264
2004-02-01	39.4331105996879
2004-03-01	40.5295005170399
2004-04-01	39.8144947243420
2004-05-01	41.1749551481397
2004-06-01	41.5316056660896
2004-07-01	41.6145401971417
2004-08-01	41.3217697699333
2004-09-01	43.1337484677734
2004-10-01	42.5126236253382
2004-11-01	42.1912289919562
2004-12-01	42.1278767382856
2005-01-01	41.2907581727115
2005-02-01	41.1633045678259
2005-03-01	42.6885903311705
2005-04-01	42.4504110362413
2005-05-01	42.3927412833847
2005-06-01	43.2949903579809
2005-07-01	43.6219401174538
2005-08-01	43.4235512761694
2005-09-01	44.5277337383691
2005-10-01	44.2284968229755
2005-11-01	44.2131395747521
2005-12-01	44.0330234389383
2006-01-01	42.7493972964427
2006-02-01	44.3843450555343
2006-03-01	45.8106993412408
2006-04-01	45.3075210771474
2006-05-01	45.9643952984316
2006-06-01	46.3606970556189
2006-07-01	45.7811368942241
2006-08-01	46.3139196523002
2006-09-01	47.5698238261290
2006-10-01	46.8926222042035
2006-11-01	46.6476842144286
2006-12-01	47.1173036761651
2007-01-01	45.5113747275866
2007-02-01	46.1562019956236
2007-03-01	46.7996263858654
2007-04-01	46.7750928061925
2007-05-01	47.7679736570907
2007-06-01	47.7351920732341
2007-07-01	47.5487707488585
2007-08-01	47.4233212501528
2007-09-01	47.9584344674574
2007-10-01	47.2673843245599
2007-11-01	48.0947512967434
2007-12-01	48.2980907797048
2008-01-01	47.1870837131378
2008-02-01	48.2844562261938
2008-03-01	47.5596701216909
2008-04-01	48.5830163617423
2008-05-01	48.9101073077888
2008-06-01	49.3112442337306
2008-07-01	49.3557364940530
2008-08-01	49.5570811922405
2008-09-01	50.9612008164691
2008-10-01	50.0099696139655
2008-11-01	49.9803662347895
2008-12-01	49.2903096659647
2009-01-01	49.2480619344311
2009-02-01	50.8469362610030
2009-03-01	51.1559780698406
2009-04-01	50.6312140449981
2009-05-01	52.1803202155479
2009-06-01	51.6992722941692
2009-07-01	51.4241335471738
2009-08-01	50.5979189056562
2009-09-01	51.5311127642392
2009-10-01	51.4667910982095
2009-11-01	52.5749628314012
2009-12-01	52.8862887904298
2010-01-01	50.8251477531346
2010-02-01	52.0864845908489
2010-03-01	52.7554139507329
2010-04-01	52.4077631912182
2010-05-01	52.3449200478374
2010-06-01	52.5835596688828
2010-07-01	52.2718209398194
2010-08-01	52.6431655189845
2010-09-01	53.7536201577234
2010-10-01	54.0460319459074
2010-11-01	53.6108691623293
2010-12-01	53.3099356892469
2011-01-01	51.1699553271475
2011-02-01	52.4746110344353
2011-03-01	53.2060798294722
2011-04-01	52.4930142789797
2011-05-01	53.0554879256956
2011-06-01	54.2121105652040
2011-07-01	53.9904827887710
2011-08-01	54.1690867332086
2011-09-01	54.5147994620770
2011-10-01	53.6123823306314
2011-11-01	53.6990476432968
2011-12-01	54.0322662941698
2012-01-01	52.6718432638369
2012-02-01	53.0123681759986
2012-03-01	54.3229916101544
2012-04-01	53.8792629975214
2012-05-01	54.2742270080750
2012-06-01	54.1090412506199
2012-07-01	54.2443471630883
2012-08-01	53.8396629617116
2012-09-01	54.7560864178918
2012-10-01	54.5350926560019
2012-11-01	53.8422009911702
2012-12-01	53.6469400985458
2013-01-01	52.0777686354096
2013-02-01	54.3567253554087
2013-03-01	54.4218535278357
2013-04-01	54.9852718127370
2013-05-01	54.7355150047436
2013-06-01	54.7386715245376
2013-07-01	53.0755003780082
2013-08-01	53.9352152469417
2013-09-01	54.3775249843382
2013-10-01	53.9267842037014
2013-11-01	53.9920393784154
2013-12-01	53.5440516723546
2014-01-01	51.4057666216090
2014-02-01	52.7294412431499
2014-03-01	53.3336801170190
2014-04-01	53.2583336156037
2014-05-01	54.4232798594547
2014-06-01	55.0882053790126
2014-07-01	54.8254718043984
2014-08-01	55.6327955345860
2014-09-01	54.3845237917950
2014-10-01	54.0533439990556
2014-11-01	54.4369947147830
2014-12-01	54.8220803878459
2015-01-01	53.5087839546175
2015-02-01	54.5468540049482
2015-03-01	54.0304773879875
2015-04-01	54.5771453587035
2015-05-01	55.1864853646560
2015-06-01	54.9381965383150
2015-07-01	55.1508080208709
2015-08-01	54.7415091312525
2015-09-01	55.4484119071928
2015-10-01	57.0313846197764
2015-11-01	57.2236539169794
2015-12-01	56.4165282826473
2016-01-01	55.3559206373321
2016-02-01	56.6648640957875
2016-03-01	57.2158882150365
2016-04-01	57.0868558691624
2016-05-01	56.9010646903976
2016-06-01	56.6404438485696
2016-07-01	56.2294974029770
2016-08-01	56.4744892462749
2016-09-01	56.5605371925415
2016-10-01	56.5795341507060
2016-11-01	57.4870990641535
2016-12-01	57.2876694537719
2017-01-01	56.2181273308823
2017-02-01	57.0325127672238
2017-03-01	57.6613047295954
2017-04-01	57.5730957078098
2017-05-01	58.9374414214249
2017-06-01	59.1668395223464
2017-07-01	57.4238992039886
2017-08-01	58.1502999490530
2017-09-01	58.3952793912890
2017-10-01	57.8600946199696
2017-11-01	58.3392203582393
2017-12-01	57.5186548225429
2018-01-01	55.4897405911468
2018-02-01	57.9152992182412
2018-03-01	57.4083177152208
2018-04-01	57.7070283947242
2018-05-01	58.1374058477647
2018-06-01	58.3260775399189
2018-07-01	58.0121711335834
2018-08-01	58.9008770236621
2018-09-01	59.0125672120503