Month	Percent
1978-02-01	43.7318487
1978-03-01	44.0301062
1978-04-01	44.0158028
1978-05-01	43.7925813
1978-06-01	43.4877458
1978-07-01	43.6207553
1978-08-01	43.4827714
1978-09-01	43.4414453
1978-10-01	43.4078593
1978-11-01	43.3913319
1978-12-01	44.3505122
1979-01-01	42.3368466
1979-02-01	43.6009316
1979-03-01	43.9528100
1979-04-01	43.6713635
1979-05-01	43.1131903
1979-06-01	43.2600853
1979-07-01	43.3225100
1979-08-01	42.8528277
1979-09-01	43.9004270
1979-10-01	44.0689109
1979-11-01	44.1742584
1979-12-01	44.7268570
1980-01-01	42.9258189
1980-02-01	44.5328455
1980-03-01	45.2951716
1980-04-01	44.6034308
1980-05-01	44.7360967
1980-06-01	44.8583944
1980-07-01	45.0776126
1980-08-01	44.7051599
1980-09-01	45.5463215
1980-10-01	44.6701991
1980-11-01	44.7757739
1980-12-01	45.4409364
1981-01-01	43.2290195
1981-02-01	44.5064290
1981-03-01	45.2892445
1981-04-01	45.0030239
1981-05-01	44.6785642
1981-06-01	44.4230656
1981-07-01	44.6574918
1981-08-01	44.3685557
1981-09-01	45.5491744
1981-10-01	44.9102711
1981-11-01	44.8048789
1981-12-01	45.5165573
1982-01-01	43.5006641
1982-02-01	44.9341768
1982-03-01	45.6356929
1982-04-01	44.6995380
1982-05-01	44.7262387
1982-06-01	44.3753296
1982-07-01	44.3241908
1982-08-01	43.9687427
1982-09-01	44.7283216
1982-10-01	44.8656774
1982-11-01	44.5951837
1982-12-01	45.3431457
1983-01-01	43.0679642
1983-02-01	44.8828468
1983-03-01	45.5622370
1983-04-01	44.4850449
1983-05-01	44.8327115
1983-06-01	44.4236952
1983-07-01	44.5181862
1983-08-01	44.0248396
1983-09-01	45.2806905
1983-10-01	44.5056650
1983-11-01	44.7817899
1983-12-01	45.5482802
1984-01-01	43.2652575
1984-02-01	44.8576954
1984-03-01	46.1434605
1984-04-01	45.8279170
1984-05-01	45.2985934
1984-06-01	45.3978708
1984-07-01	45.0870696
1984-08-01	44.5841034
1984-09-01	45.9674478
1984-10-01	45.2929412
1984-11-01	45.5501650
1984-12-01	46.2985806
1985-01-01	44.1366162
1985-02-01	46.1711296
1985-03-01	46.9245314
1985-04-01	45.6144804
1985-05-01	46.1181760
1985-06-01	46.0762966
1985-07-01	46.1061729
1985-08-01	45.6939410
1985-09-01	46.9951290
1985-10-01	46.2850317
1985-11-01	47.3419936
1985-12-01	47.8381174
1986-01-01	45.8776349
1986-02-01	47.8730081
1986-03-01	48.7642481
1986-04-01	48.8735420
1986-05-01	48.5133952
1986-06-01	48.1895963
1986-07-01	48.4972689
1986-08-01	47.5771399
1986-09-01	48.8715626
1986-10-01	48.5346765
1986-11-01	48.6056049
1986-12-01	49.3250199
1987-01-01	47.0781779
1987-02-01	48.8781049
1987-03-01	50.0659049
1987-04-01	49.4137703
1987-05-01	49.0001986
1987-06-01	48.6875306
1987-07-01	48.9900040
1987-08-01	48.2611431
1987-09-01	49.0599433
1987-10-01	48.8389189
1987-11-01	48.8758176
1987-12-01	50.0725836
1988-01-01	48.3333361
1988-02-01	49.3531858
1988-03-01	50.8623331
1988-04-01	50.5309678
1988-05-01	49.9003021
1988-06-01	49.6293091
1988-07-01	49.0202277
1988-08-01	49.3501047
1988-09-01	50.6007424
1988-10-01	49.7018124
1988-11-01	49.9077104
1988-12-01	51.1412500
1989-01-01	49.3450219
1989-02-01	50.7755619
1989-03-01	51.1845606
1989-04-01	51.1303370
1989-05-01	51.5747599
1989-06-01	51.0175314
1989-07-01	51.0832405
1989-08-01	50.8490624
1989-09-01	52.1105599
1989-10-01	51.3059620
1989-11-01	51.7833792
1989-12-01	52.5306558
1990-01-01	50.5591843
1990-02-01	52.2188162
1990-03-01	52.5005705
1990-04-01	52.3040259
1990-05-01	52.5352119
1990-06-01	52.4131216
1990-07-01	52.5266309
1990-08-01	51.8988372
1990-09-01	52.7368702
1990-10-01	52.0073854
1990-11-01	52.1340247
1990-12-01	53.0915009
1991-01-01	50.9293948
1991-02-01	52.2633909
1991-03-01	52.6217793
1991-04-01	52.8971076
1991-05-01	52.3962766
1991-06-01	51.7763769
1991-07-01	51.2367908
1991-08-01	51.5554028
1991-09-01	52.7082961
1991-10-01	51.3396187
1991-11-01	51.3700594
1991-12-01	52.6514513
1992-01-01	50.9906032
1992-02-01	52.2743812
1992-03-01	52.4338422
1992-04-01	51.9995395
1992-05-01	51.8279380
1992-06-01	51.8664482
1992-07-01	51.9342976
1992-08-01	51.5395774
1992-09-01	52.5601347
1992-10-01	51.8431352
1992-11-01	51.4718252
1992-12-01	52.5378731
1993-01-01	50.9175624
1993-02-01	51.6609088
1993-03-01	52.2082443
1993-04-01	50.9882217
1993-05-01	51.3246677
1993-06-01	51.2799404
1993-07-01	51.0931794
1993-08-01	51.1383743
1993-09-01	52.5210269
1993-10-01	52.0887490
1993-11-01	52.2825141
1993-12-01	52.9050078
1994-01-01	51.2427160
1994-02-01	52.6286773
1994-03-01	52.9430179
1994-04-01	52.3560949
1994-05-01	52.3478818
1994-06-01	52.3150522
1994-07-01	52.7486474
1994-08-01	51.8327882
1994-09-01	53.8359427
1994-10-01	52.4760035
1994-11-01	52.7392620
1994-12-01	53.6739915
1995-01-01	51.8544764
1995-02-01	53.3967292
1995-03-01	53.7764416
1995-04-01	53.4679882
1995-05-01	53.5267115
1995-06-01	53.6869049
1995-07-01	53.5903324
1995-08-01	53.1797521
1995-09-01	54.1989654
1995-10-01	53.6511623
1995-11-01	54.2361862
1995-12-01	54.6256922
1996-01-01	52.9789424
1996-02-01	53.9990899
1996-03-01	54.2631400
1996-04-01	53.5964240
1996-05-01	53.8327952
1996-06-01	53.5858090
1996-07-01	53.7651662
1996-08-01	53.4016373
1996-09-01	54.4031812
1996-10-01	53.7052898
1996-11-01	53.4277783
1996-12-01	54.5251079
1997-01-01	52.8406524
1997-02-01	54.2114537
1997-03-01	54.0684677
1997-04-01	53.7699123
1997-05-01	53.5821790
1997-06-01	53.3244286
1997-07-01	53.4007759
1997-08-01	52.6478335
1997-09-01	54.2949620
1997-10-01	53.1925053
1997-11-01	53.5882097
1997-12-01	54.0614483
1998-01-01	52.3988735
1998-02-01	53.5214244
1998-03-01	53.6888065
1998-04-01	53.6890437
1998-05-01	53.4759548
1998-06-01	53.6794763
1998-07-01	53.7160499
1998-08-01	53.2132542
1998-09-01	54.6439256
1998-10-01	53.7307592
1998-11-01	53.5261830
1998-12-01	54.3605110
1999-01-01	52.5446289
1999-02-01	53.5823913
1999-03-01	53.6915516
1999-04-01	53.5269050
1999-05-01	53.3479550
1999-06-01	53.3517195
1999-07-01	53.3680610
1999-08-01	52.8388425
1999-09-01	54.5798532
1999-10-01	53.9087609
1999-11-01	53.8846950
1999-12-01	54.9020692
2000-01-01	52.8811599
2000-02-01	54.2757973
2000-03-01	54.7083434
2000-04-01	54.6720814
2000-05-01	54.5524601
2000-06-01	54.5720173
2000-07-01	54.8368092
2000-08-01	54.4972060
2000-09-01	55.4713979
2000-10-01	54.4174572
2000-11-01	54.1116758
2000-12-01	55.0949751
2001-01-01	53.4519871
2001-02-01	54.9004881
2001-03-01	55.0620696
2001-04-01	55.5363705
2001-05-01	55.3526313
2001-06-01	55.3295619
2001-07-01	54.8906437
2001-08-01	54.7043334
2001-09-01	55.6079233
2001-10-01	55.0955950
2001-11-01	54.9506627
2001-12-01	55.7022734
2002-01-01	54.6979635
2002-02-01	55.2958622
2002-03-01	55.1739137
2002-04-01	54.7222014
2002-05-01	54.7191478
2002-06-01	55.1073212
2002-07-01	54.7056837
2002-08-01	54.8709884
2002-09-01	56.1727638
2002-10-01	55.2626310
2002-11-01	55.5972850
2002-12-01	56.5590371
2003-01-01	55.6790432
2003-02-01	56.5745711
2003-03-01	56.2855468
2003-04-01	56.0156207
2003-05-01	56.2444520
2003-06-01	55.9465237
2003-07-01	55.4921545
2003-08-01	55.2156954
2003-09-01	56.3975022
2003-10-01	55.5202571
2003-11-01	55.4491555
2003-12-01	56.1569839
2004-01-01	54.6905823
2004-02-01	55.5808242
2004-03-01	55.8046447
2004-04-01	55.5395831
2004-05-01	55.5904394
2004-06-01	55.5473062
2004-07-01	55.3936170
2004-08-01	55.1475674
2004-09-01	56.3559996
2004-10-01	55.9001994
2004-11-01	55.8451366
2004-12-01	56.8382452
2005-01-01	55.7741446
2005-02-01	56.8280028
2005-03-01	57.2774863
2005-04-01	56.9346868
2005-05-01	56.9986317
2005-06-01	57.0461647
2005-07-01	56.8436594
2005-08-01	56.5774804
2005-09-01	57.6633276
2005-10-01	57.0058477
2005-11-01	56.9168436
2005-12-01	57.7608305
2006-01-01	56.5070617
2006-02-01	57.2491413
2006-03-01	57.4391269
2006-04-01	57.2843980
2006-05-01	57.6143446
2006-06-01	57.6675619
2006-07-01	57.3816346
2006-08-01	57.2245602
2006-09-01	58.4810238
2006-10-01	57.3599019
2006-11-01	57.3786745
2006-12-01	58.6332693
2007-01-01	57.1159475
2007-02-01	58.1261245
2007-03-01	58.0997469
2007-04-01	57.8002127
2007-05-01	58.0392423
2007-06-01	57.9414687
2007-07-01	57.7239078
2007-08-01	57.6105905
2007-09-01	58.8712791
2007-10-01	58.2254762
2007-11-01	58.1932904
2007-12-01	59.0766258
2008-01-01	57.8213817
2008-02-01	58.5255934
2008-03-01	58.5947576
2008-04-01	58.7910452
2008-05-01	58.5477574
2008-06-01	58.5861174
2008-07-01	58.5358038
2008-08-01	58.1489673
2008-09-01	59.0658656
2008-10-01	58.4837571
2008-11-01	58.3407292
2008-12-01	59.1296335
2009-01-01	58.0864175
2009-02-01	59.4472292
2009-03-01	59.3614777
2009-04-01	58.9262706
2009-05-01	59.0052217
2009-06-01	58.7841081
2009-07-01	58.4303227
2009-08-01	57.9485591
2009-09-01	58.9890671
2009-10-01	58.4652239
2009-11-01	58.3227743
2009-12-01	59.1940553
2010-01-01	57.8887122
2010-02-01	58.5445724
2010-03-01	58.6678954
2010-04-01	58.4551849
2010-05-01	58.3821417
2010-06-01	58.4956630
2010-07-01	58.4519073
2010-08-01	58.1227511
2010-09-01	59.1672818
2010-10-01	58.8831188
2010-11-01	58.8524595
2010-12-01	59.4367906
2011-01-01	58.1753897
2011-02-01	58.9169996
2011-03-01	59.3056690
2011-04-01	58.7904440
2011-05-01	58.8829786
2011-06-01	58.9480706
2011-07-01	58.7356724
2011-08-01	58.3658715
2011-09-01	59.5589950
2011-10-01	58.8991671
2011-11-01	58.6306570
2011-12-01	59.1579431
2012-01-01	57.9219409
2012-02-01	58.8299942
2012-03-01	59.3614705
2012-04-01	58.7013294
2012-05-01	59.2921785
2012-06-01	58.8188465
2012-07-01	58.6064816
2012-08-01	58.0018725
2012-09-01	59.4775905
2012-10-01	58.7316098
2012-11-01	58.4219710
2012-12-01	59.0935524
2013-01-01	58.0852294
2013-02-01	59.1074338
2013-03-01	59.1122977
2013-04-01	59.1207685
2013-05-01	58.8779237
2013-06-01	58.7925083
2013-07-01	58.4571539
2013-08-01	58.0945631
2013-09-01	59.1251083
2013-10-01	58.5641686
2013-11-01	58.2354704
2013-12-01	58.7136757
2014-01-01	57.8548145
2014-02-01	58.9392276
2014-03-01	59.1013917
2014-04-01	58.6725205
2014-05-01	58.8507352
2014-06-01	58.7217972
2014-07-01	58.6031526
2014-08-01	58.8411366
2014-09-01	58.5643144
2014-10-01	58.5373978
2014-11-01	58.2426194
2014-12-01	59.0910902
2015-01-01	57.9674044
2015-02-01	59.3779564
2015-03-01	58.9999358
2015-04-01	58.8823329
2015-05-01	59.1274979
2015-06-01	59.0057334
2015-07-01	59.2223836
2015-08-01	58.8170085
2015-09-01	59.0314569
2015-10-01	59.2992016
2015-11-01	59.7510118
2015-12-01	60.0225977
2016-01-01	58.7488178
2016-02-01	60.0168245
2016-03-01	59.6028063
2016-04-01	59.5981023
2016-05-01	59.5824138
2016-06-01	59.6201472
2016-07-01	59.3862796
2016-08-01	58.7791881
2016-09-01	58.9481740
2016-10-01	58.8903598
2016-11-01	59.3280137
2016-12-01	59.7302497
2017-01-01	58.6728181
2017-02-01	59.7553691
2017-03-01	59.8233370
2017-04-01	59.5820392
2017-05-01	59.8524287
2017-06-01	59.9006705
2017-07-01	59.6354914
2017-08-01	59.6956807
2017-09-01	59.9380661
2017-10-01	59.9185322
2017-11-01	60.3387299
2017-12-01	61.0983894
2018-01-01	59.8344637
2018-02-01	61.1011088
2018-03-01	60.8037722
2018-04-01	60.6134743
2018-05-01	60.7107902
2018-06-01	60.7062107
2018-07-01	60.2157850
2018-08-01	60.1403844
2018-09-01	60.1385181