Month	Percent
1978-02-01	62.0237281
1978-03-01	61.7094428
1978-04-01	61.5703481
1978-05-01	61.2743922
1978-06-01	61.1448128
1978-07-01	61.0797431
1978-08-01	59.7785331
1978-09-01	60.1202920
1978-10-01	60.2013904
1978-11-01	59.8235352
1978-12-01	62.6605577
1979-01-01	61.7612143
1979-02-01	61.8474873
1979-03-01	61.5007632
1979-04-01	61.1740974
1979-05-01	61.1371202
1979-06-01	60.4944451
1979-07-01	60.6641011
1979-08-01	60.2911971
1979-09-01	61.1861043
1979-10-01	60.4710471
1979-11-01	61.2641208
1979-12-01	64.1529220
1980-01-01	62.9439321
1980-02-01	63.1665004
1980-03-01	63.0644837
1980-04-01	62.2986602
1980-05-01	63.2857291
1980-06-01	62.8185244
1980-07-01	63.0714421
1980-08-01	62.1510357
1980-09-01	63.4199506
1980-10-01	62.5716256
1980-11-01	62.8959321
1980-12-01	65.9190257
1981-01-01	64.0095038
1981-02-01	64.5149244
1981-03-01	64.6828749
1981-04-01	64.4735404
1981-05-01	64.5389141
1981-06-01	64.1271323
1981-07-01	63.5623251
1981-08-01	62.6676278
1981-09-01	63.9773873
1981-10-01	62.7592366
1981-11-01	62.2609635
1981-12-01	65.4427034
1982-01-01	63.9527013
1982-02-01	63.7346528
1982-03-01	63.6417469
1982-04-01	62.6907844
1982-05-01	62.6065720
1982-06-01	61.4046227
1982-07-01	61.6860933
1982-08-01	60.6510152
1982-09-01	61.0249257
1982-10-01	60.2652866
1982-11-01	59.5477245
1982-12-01	60.6216012
1983-01-01	58.8903686
1983-02-01	58.1966608
1983-03-01	58.0613927
1983-04-01	57.9397208
1983-05-01	58.3205157
1983-06-01	57.6534935
1983-07-01	57.7493521
1983-08-01	56.7458918
1983-09-01	58.0422386
1983-10-01	58.2273883
1983-11-01	58.3748790
1983-12-01	60.7045536
1984-01-01	59.0286552
1984-02-01	58.4629176
1984-03-01	59.6017343
1984-04-01	59.3649652
1984-05-01	59.5931958
1984-06-01	58.6920850
1984-07-01	59.4764438
1984-08-01	58.1632582
1984-09-01	59.3685563
1984-10-01	58.4314395
1984-11-01	58.4483383
1984-12-01	60.6616300
1985-01-01	59.8457320
1985-02-01	59.9119319
1985-03-01	59.6543488
1985-04-01	59.9404765
1985-05-01	60.8047118
1985-06-01	60.2740728
1985-07-01	60.1255764
1985-08-01	59.5074806
1985-09-01	61.4835422
1985-10-01	60.2523148
1985-11-01	60.8306038
1985-12-01	62.4513501
1986-01-01	61.3665166
1986-02-01	61.4232517
1986-03-01	61.6636443
1986-04-01	62.3332677
1986-05-01	61.9016876
1986-06-01	61.3749865
1986-07-01	60.5870636
1986-08-01	59.5076820
1986-09-01	60.7757031
1986-10-01	60.1711054
1986-11-01	59.9216806
1986-12-01	63.0490647
1987-01-01	61.1555316
1987-02-01	60.7248363
1987-03-01	60.8080052
1987-04-01	61.0016512
1987-05-01	60.3603298
1987-06-01	60.3080892
1987-07-01	61.4613775
1987-08-01	58.6852565
1987-09-01	59.8110797
1987-10-01	60.0955651
1987-11-01	59.7724513
1987-12-01	63.5962072
1988-01-01	61.8293683
1988-02-01	61.1490482
1988-03-01	61.7676508
1988-04-01	61.4883296
1988-05-01	60.7926199
1988-06-01	60.6110608
1988-07-01	61.2947713
1988-08-01	60.2721394
1988-09-01	61.7400750
1988-10-01	61.4422877
1988-11-01	60.9015882
1988-12-01	64.8096540
1989-01-01	63.9761177
1989-02-01	64.2346221
1989-03-01	63.5904119
1989-04-01	64.0782551
1989-05-01	63.9066670
1989-06-01	63.6823382
1989-07-01	64.4388698
1989-08-01	63.1625728
1989-09-01	64.1001179
1989-10-01	64.0446635
1989-11-01	63.2178702
1989-12-01	66.1843234
1990-01-01	64.7273088
1990-02-01	63.6594256
1990-03-01	63.2115093
1990-04-01	63.4732659
1990-05-01	63.2251895
1990-06-01	62.6112275
1990-07-01	63.5018744
1990-08-01	61.0796951
1990-09-01	61.9330779
1990-10-01	61.4117138
1990-11-01	60.3135915
1990-12-01	63.4460168
1991-01-01	60.6208122
1991-02-01	59.0876543
1991-03-01	58.2200475
1991-04-01	58.3520278
1991-05-01	57.2421366
1991-06-01	56.5130798
1991-07-01	56.2331205
1991-08-01	55.8565295
1991-09-01	56.8116185
1991-10-01	56.4533568
1991-11-01	55.4204339
1991-12-01	58.9050637
1992-01-01	56.7954879
1992-02-01	55.9396834
1992-03-01	55.6053412
1992-04-01	56.2074415
1992-05-01	55.7471922
1992-06-01	55.2429035
1992-07-01	56.6370972
1992-08-01	54.9490041
1992-09-01	56.2534610
1992-10-01	55.7166913
1992-11-01	54.4198227
1992-12-01	58.5664802
1993-01-01	57.8708545
1993-02-01	55.8863854
1993-03-01	55.4694530
1993-04-01	55.2358866
1993-05-01	55.2938970
1993-06-01	55.0964637
1993-07-01	55.9124001
1993-08-01	54.2008912
1993-09-01	55.7828891
1993-10-01	55.9190986
1993-11-01	55.9793733
1993-12-01	59.1371103
1994-01-01	58.4900660
1994-02-01	57.4108687
1994-03-01	57.5138272
1994-04-01	57.6213634
1994-05-01	57.3225025
1994-06-01	57.6716844
1994-07-01	59.3096267
1994-08-01	57.2875417
1994-09-01	59.1762573
1994-10-01	59.7508521
1994-11-01	59.3657533
1994-12-01	63.0750223
1995-01-01	61.0778572
1995-02-01	60.7799076
1995-03-01	60.4965621
1995-04-01	61.3221274
1995-05-01	60.1159924
1995-06-01	60.4152088
1995-07-01	60.7817894
1995-08-01	59.5992311
1995-09-01	60.8424432
1995-10-01	60.2476902
1995-11-01	60.1321826
1995-12-01	63.1792841
1996-01-01	61.4061091
1996-02-01	60.2792096
1996-03-01	59.8763160
1996-04-01	60.6069392
1996-05-01	60.3962189
1996-06-01	60.2304514
1996-07-01	60.8563830
1996-08-01	59.5881285
1996-09-01	60.4072257
1996-10-01	60.0636409
1996-11-01	59.0557403
1996-12-01	62.6070215
1997-01-01	61.1230378
1997-02-01	58.8025887
1997-03-01	58.9932675
1997-04-01	59.1207929
1997-05-01	58.5969558
1997-06-01	58.0353351
1997-07-01	58.5984659
1997-08-01	56.1942511
1997-09-01	58.4339826
1997-10-01	59.0370097
1997-11-01	58.6446344
1997-12-01	61.8596945
1998-01-01	60.6399277
1998-02-01	59.5192549
1998-03-01	59.1040529
1998-04-01	59.3398186
1998-05-01	58.9726327
1998-06-01	58.9095285
1998-07-01	59.3755774
1998-08-01	57.9441794
1998-09-01	60.4230281
1998-10-01	60.4620242
1998-11-01	59.4880600
1998-12-01	62.9627194
1999-01-01	61.1272635
1999-02-01	60.6151433
1999-03-01	60.3569557
1999-04-01	60.7873732
1999-05-01	59.8130012
1999-06-01	60.0333322
1999-07-01	61.0723316
1999-08-01	58.8318942
1999-09-01	60.9023668
1999-10-01	61.0429259
1999-11-01	60.2175675
1999-12-01	64.1948992
2000-01-01	61.6516309
2000-02-01	61.2425630
2000-03-01	61.3591828
2000-04-01	61.7844682
2000-05-01	61.2497454
2000-06-01	61.2468782
2000-07-01	63.0996815
2000-08-01	60.0416262
2000-09-01	62.3813297
2000-10-01	61.5323613
2000-11-01	60.6201651
2000-12-01	64.1038906
2001-01-01	62.5744682
2001-02-01	61.0886196
2001-03-01	60.4773073
2001-04-01	60.9220371
2001-05-01	60.6926295
2001-06-01	60.6965593
2001-07-01	61.5412778
2001-08-01	59.9962354
2001-09-01	61.0474360
2001-10-01	60.5225734
2001-11-01	60.4875044
2001-12-01	63.6748282
2002-01-01	61.6925894
2002-02-01	61.2957880
2002-03-01	60.2995456
2002-04-01	60.4650380
2002-05-01	60.0429837
2002-06-01	59.9361756
2002-07-01	60.9601976
2002-08-01	59.5018739
2002-09-01	61.4926224
2002-10-01	61.1273440
2002-11-01	60.8012419
2002-12-01	64.5753818
2003-01-01	63.3964030
2003-02-01	62.4510156
2003-03-01	61.0312830
2003-04-01	61.0790736
2003-05-01	61.0280850
2003-06-01	60.5843818
2003-07-01	61.2977876
2003-08-01	60.1065951
2003-09-01	61.6072035
2003-10-01	62.1227890
2003-11-01	61.7181575
2003-12-01	65.3980043
2004-01-01	63.3190970
2004-02-01	62.7297595
2004-03-01	61.9801877
2004-04-01	62.7223151
2004-05-01	61.9619443
2004-06-01	61.3278938
2004-07-01	62.0314486
2004-08-01	59.1495942
2004-09-01	61.7711116
2004-10-01	61.6834302
2004-11-01	61.4975101
2004-12-01	65.7798737
2005-01-01	63.9485459
2005-02-01	63.6188206
2005-03-01	63.0292854
2005-04-01	63.4404395
2005-05-01	63.1509479
2005-06-01	63.0996403
2005-07-01	63.3449315
2005-08-01	62.1041114
2005-09-01	62.9825258
2005-10-01	62.3592687
2005-11-01	62.7836051
2005-12-01	65.5996775
2006-01-01	64.1474684
2006-02-01	63.6091013
2006-03-01	63.2304111
2006-04-01	63.0953033
2006-05-01	62.8080820
2006-06-01	63.5642816
2006-07-01	64.1158110
2006-08-01	62.4754409
2006-09-01	63.8287755
2006-10-01	63.7863337
2006-11-01	62.7562313
2006-12-01	66.9511288
2007-01-01	64.9236671
2007-02-01	64.3157851
2007-03-01	63.8503181
2007-04-01	64.5654857
2007-05-01	64.2018371
2007-06-01	63.2607512
2007-07-01	64.0013409
2007-08-01	62.2424975
2007-09-01	63.7097617
2007-10-01	63.9541077
2007-11-01	63.0943429
2007-12-01	67.4708366
2008-01-01	66.5805119
2008-02-01	65.6807805
2008-03-01	64.7887472
2008-04-01	65.2965026
2008-05-01	64.1357810
2008-06-01	64.3511366
2008-07-01	64.7656198
2008-08-01	63.0109016
2008-09-01	63.9681180
2008-10-01	63.9009266
2008-11-01	62.0082232
2008-12-01	65.6870173
2009-01-01	63.1580109
2009-02-01	62.4986091
2009-03-01	61.8249558
2009-04-01	61.6341835
2009-05-01	60.3916169
2009-06-01	59.9638677
2009-07-01	60.5587508
2009-08-01	58.7169353
2009-09-01	60.3684541
2009-10-01	60.8848990
2009-11-01	60.2711082
2009-12-01	63.9204133
2010-01-01	61.9662859
2010-02-01	61.0868069
2010-03-01	60.6714800
2010-04-01	60.6739677
2010-05-01	60.0452104
2010-06-01	59.7681926
2010-07-01	60.5249084
2010-08-01	58.2867802
2010-09-01	59.8082173
2010-10-01	60.2148099
2010-11-01	59.6148002
2010-12-01	63.5881944
2011-01-01	61.7099342
2011-02-01	61.0597771
2011-03-01	60.5392905
2011-04-01	60.2388094
2011-05-01	60.2970245
2011-06-01	59.6896375
2011-07-01	60.2047800
2011-08-01	58.9302521
2011-09-01	60.7294670
2011-10-01	60.6186266
2011-11-01	59.0512448
2011-12-01	61.6144522
2012-01-01	61.0417704
2012-02-01	60.1088173
2012-03-01	59.6011070
2012-04-01	59.9603793
2012-05-01	60.1195360
2012-06-01	59.4118187
2012-07-01	59.0155042
2012-08-01	57.5265055
2012-09-01	59.1548107
2012-10-01	58.9156335
2012-11-01	58.5044863
2012-12-01	61.8515113
2013-01-01	60.4114571
2013-02-01	58.9519682
2013-03-01	58.4978405
2013-04-01	59.3061419
2013-05-01	59.1746450
2013-06-01	58.4197602
2013-07-01	59.1836425
2013-08-01	56.8710124
2013-09-01	57.9828538
2013-10-01	57.8757419
2013-11-01	57.4695257
2013-12-01	59.7944426
2014-01-01	59.0399764
2014-02-01	57.5272383
2014-03-01	57.9080154
2014-04-01	57.7950983
2014-05-01	57.4254674
2014-06-01	57.2644309
2014-07-01	57.4006318
2014-08-01	56.6099061
2014-09-01	56.6545919
2014-10-01	56.9179457
2014-11-01	57.5529969
2014-12-01	60.5404346
2015-01-01	58.1255139
2015-02-01	58.7494851
2015-03-01	57.9348403
2015-04-01	58.3205367
2015-05-01	58.3353838
2015-06-01	58.1048625
2015-07-01	58.5312578
2015-08-01	56.4274043
2015-09-01	57.6936391
2015-10-01	58.5641390
2015-11-01	59.0076581
2015-12-01	61.7913662
2016-01-01	59.1183713
2016-02-01	59.7257182
2016-03-01	58.6603134
2016-04-01	59.0041536
2016-05-01	59.0568443
2016-06-01	58.3520638
2016-07-01	58.2713268
2016-08-01	56.5610369
2016-09-01	57.3153430
2016-10-01	57.2125205
2016-11-01	56.9241098
2016-12-01	59.9350920
2017-01-01	59.1379043
2017-02-01	58.1942479
2017-03-01	57.7708351
2017-04-01	58.2301824
2017-05-01	58.0701311
2017-06-01	57.6322786
2017-07-01	58.3266835
2017-08-01	57.3351154
2017-09-01	58.5194650
2017-10-01	58.0140988
2017-11-01	58.7003035
2017-12-01	61.4202598
2018-01-01	60.1282807
2018-02-01	59.7519918
2018-03-01	59.1604564
2018-04-01	59.6868790
2018-05-01	60.2370553
2018-06-01	60.2563599
2018-07-01	59.7746069
2018-08-01	58.5253906
2018-09-01	59.0492460