Month	Percent
1978-02-01	82.5641811
1978-03-01	82.6644348
1978-04-01	82.5639295
1978-05-01	82.3816044
1978-06-01	82.2240005
1978-07-01	81.8345945
1978-08-01	81.3995239
1978-09-01	81.5211213
1978-10-01	81.7200267
1978-11-01	81.4044421
1978-12-01	82.7908366
1979-01-01	81.6565777
1979-02-01	82.1535186
1979-03-01	82.2471816
1979-04-01	82.1199383
1979-05-01	82.0736921
1979-06-01	82.0002351
1979-07-01	81.9164998
1979-08-01	81.7351077
1979-09-01	82.3429591
1979-10-01	82.0461844
1979-11-01	81.9378511
1979-12-01	83.0515115
1980-01-01	81.8955896
1980-02-01	82.2792310
1980-03-01	82.4066037
1980-04-01	81.8728050
1980-05-01	82.4303660
1980-06-01	82.1081221
1980-07-01	82.1775770
1980-08-01	81.8125545
1980-09-01	82.4952488
1980-10-01	82.1043059
1980-11-01	82.0758035
1980-12-01	83.4393497
1981-01-01	82.1249191
1981-02-01	82.6998306
1981-03-01	82.9306366
1981-04-01	82.7515503
1981-05-01	82.5676759
1981-06-01	82.4414592
1981-07-01	82.3509347
1981-08-01	81.8563652
1981-09-01	82.5342057
1981-10-01	81.7233167
1981-11-01	81.4302063
1981-12-01	82.4768536
1982-01-01	81.5219822
1982-02-01	81.8344901
1982-03-01	81.8889058
1982-04-01	81.1819143
1982-05-01	81.1657429
1982-06-01	80.7302699
1982-07-01	80.5573715
1982-08-01	79.6700508
1982-09-01	80.3168535
1982-10-01	79.7232994
1982-11-01	78.7987693
1982-12-01	78.6921039
1983-01-01	77.1539230
1983-02-01	77.5708449
1983-03-01	77.2952642
1983-04-01	76.7885355
1983-05-01	76.7271898
1983-06-01	76.4771984
1983-07-01	76.6325233
1983-08-01	75.9849514
1983-09-01	77.0477496
1983-10-01	76.7332026
1983-11-01	76.7783644
1983-12-01	77.9234531
1984-01-01	76.3441672
1984-02-01	77.1601442
1984-03-01	77.9504339
1984-04-01	77.5275645
1984-05-01	77.5609732
1984-06-01	77.5205669
1984-07-01	77.8531592
1984-08-01	76.8056686
1984-09-01	77.6019488
1984-10-01	77.3263401
1984-11-01	77.3477655
1984-12-01	77.8590737
1985-01-01	76.7623588
1985-02-01	77.4765749
1985-03-01	77.4467490
1985-04-01	76.9931112
1985-05-01	77.3557286
1985-06-01	77.1696033
1985-07-01	77.3466633
1985-08-01	77.2470436
1985-09-01	78.5447084
1985-10-01	77.8884808
1985-11-01	78.7316981
1985-12-01	78.9465171
1986-01-01	78.0269597
1986-02-01	78.2912180
1986-03-01	78.7120221
1986-04-01	78.6275466
1986-05-01	78.2835074
1986-06-01	78.6849907
1986-07-01	77.9926519
1986-08-01	77.4718507
1986-09-01	78.3733080
1986-10-01	77.9777024
1986-11-01	77.5417019
1986-12-01	78.6164917
1987-01-01	77.0848174
1987-02-01	77.5594941
1987-03-01	78.1878720
1987-04-01	77.8311231
1987-05-01	77.5653983
1987-06-01	77.8261446
1987-07-01	78.1739485
1987-08-01	77.3525562
1987-09-01	77.7197431
1987-10-01	77.5203507
1987-11-01	77.1161327
1987-12-01	78.8090622
1988-01-01	77.8172518
1988-02-01	78.1291299
1988-03-01	78.8561035
1988-04-01	78.7358411
1988-05-01	78.2363874
1988-06-01	78.5179140
1988-07-01	78.5330529
1988-08-01	77.7358206
1988-09-01	78.8492695
1988-10-01	78.7642757
1988-11-01	78.7972166
1988-12-01	79.7698648
1989-01-01	78.3772085
1989-02-01	79.2883228
1989-03-01	79.4603101
1989-04-01	79.8759145
1989-05-01	79.8206521
1989-06-01	79.6999866
1989-07-01	79.9894046
1989-08-01	79.5633011
1989-09-01	80.3359484
1989-10-01	80.1919499
1989-11-01	80.2516251
1989-12-01	80.8082672
1990-01-01	79.3717960
1990-02-01	79.5673451
1990-03-01	79.7176010
1990-04-01	79.7142191
1990-05-01	79.7004711
1990-06-01	79.5452170
1990-07-01	79.6200849
1990-08-01	78.5209218
1990-09-01	79.2424482
1990-10-01	78.7250002
1990-11-01	77.9763576
1990-12-01	78.8465203
1991-01-01	76.8884332
1991-02-01	76.9777207
1991-03-01	76.5114986
1991-04-01	76.2447272
1991-05-01	76.0012327
1991-06-01	75.7724700
1991-07-01	74.8771445
1991-08-01	74.7349895
1991-09-01	75.4685769
1991-10-01	75.2013921
1991-11-01	74.7622150
1991-12-01	75.6288220
1992-01-01	74.2134447
1992-02-01	74.4172557
1992-03-01	74.5107681
1992-04-01	74.5015548
1992-05-01	74.1899162
1992-06-01	74.1262345
1992-07-01	74.3485540
1992-08-01	73.6764888
1992-09-01	74.3256062
1992-10-01	74.1783544
1992-11-01	73.0753990
1992-12-01	74.3624859
1993-01-01	73.4234269
1993-02-01	73.0180317
1993-03-01	73.7560753
1993-04-01	73.1133739
1993-05-01	73.4120713
1993-06-01	73.5925220
1993-07-01	73.8323675
1993-08-01	72.8970054
1993-09-01	74.1153039
1993-10-01	74.2361301
1993-11-01	73.9946477
1993-12-01	75.0059952
1994-01-01	73.8768748
1994-02-01	74.0395565
1994-03-01	74.4290495
1994-04-01	74.5900125
1994-05-01	74.7044867
1994-06-01	74.9257236
1994-07-01	75.6370884
1994-08-01	74.7128082
1994-09-01	75.7721166
1994-10-01	75.8040900
1994-11-01	75.4023301
1994-12-01	76.7693472
1995-01-01	75.4524369
1995-02-01	76.1879242
1995-03-01	76.1831558
1995-04-01	76.5175152
1995-05-01	76.1045416
1995-06-01	76.2445910
1995-07-01	76.4414184
1995-08-01	76.0434428
1995-09-01	77.0122050
1995-10-01	76.3142307
1995-11-01	76.6327943
1995-12-01	77.4835668
1996-01-01	75.9530449
1996-02-01	76.4154394
1996-03-01	76.1875113
1996-04-01	76.1250719
1996-05-01	76.3618790
1996-06-01	76.4080795
1996-07-01	76.5879160
1996-08-01	75.8123504
1996-09-01	76.5359019
1996-10-01	76.2113649
1996-11-01	76.0164024
1996-12-01	77.0294606
1997-01-01	75.8381228
1997-02-01	75.6255739
1997-03-01	75.8275763
1997-04-01	75.8207378
1997-05-01	75.5677718
1997-06-01	75.7523549
1997-07-01	75.8288110
1997-08-01	74.7721740
1997-09-01	76.0490183
1997-10-01	75.9782544
1997-11-01	76.0977217
1997-12-01	76.9922301
1998-01-01	75.9077162
1998-02-01	75.9107987
1998-03-01	75.9492840
1998-04-01	76.2342159
1998-05-01	76.0157405
1998-06-01	75.9925794
1998-07-01	76.0676516
1998-08-01	75.2809577
1998-09-01	76.8803455
1998-10-01	76.5839079
1998-11-01	76.0902452
1998-12-01	77.1336667
1999-01-01	75.9066614
1999-02-01	76.2507917
1999-03-01	76.6250621
1999-04-01	76.5513658
1999-05-01	76.1760717
1999-06-01	76.7151000
1999-07-01	76.9512118
1999-08-01	76.0888776
1999-09-01	76.9305188
1999-10-01	76.7578246
1999-11-01	76.5603672
1999-12-01	77.6718154
2000-01-01	75.9955093
2000-02-01	76.5737572
2000-03-01	76.6495510
2000-04-01	77.0562838
2000-05-01	76.7610106
2000-06-01	77.0531191
2000-07-01	77.6798870
2000-08-01	76.4608446
2000-09-01	77.5695995
2000-10-01	77.1021055
2000-11-01	76.5422427
2000-12-01	77.6505774
2001-01-01	76.0970145
2001-02-01	76.2624429
2001-03-01	76.0117621
2001-04-01	76.3995812
2001-05-01	76.2982508
2001-06-01	76.3200815
2001-07-01	76.6542394
2001-08-01	75.8540808
2001-09-01	76.7435089
2001-10-01	76.3867880
2001-11-01	76.0549797
2001-12-01	77.2127614
2002-01-01	75.8605426
2002-02-01	76.3857766
2002-03-01	76.3997071
2002-04-01	76.5382988
2002-05-01	76.4844786
2002-06-01	76.7902433
2002-07-01	76.8232016
2002-08-01	76.2450162
2002-09-01	77.0847975
2002-10-01	76.7978665
2002-11-01	76.8646279
2002-12-01	78.0002848
2003-01-01	76.7857567
2003-02-01	77.1809715
2003-03-01	77.0227951
2003-04-01	76.7182635
2003-05-01	76.6352890
2003-06-01	76.5226484
2003-07-01	76.7147248
2003-08-01	76.4672881
2003-09-01	77.4507225
2003-10-01	77.4051124
2003-11-01	77.1316802
2003-12-01	78.6252381
2004-01-01	77.2556268
2004-02-01	77.4146135
2004-03-01	77.5293696
2004-04-01	77.5869673
2004-05-01	77.5397492
2004-06-01	77.4948009
2004-07-01	77.6663898
2004-08-01	76.6054019
2004-09-01	77.8848202
2004-10-01	77.8265641
2004-11-01	77.6383389
2004-12-01	78.8184061
2005-01-01	77.6640919
2005-02-01	78.2320805
2005-03-01	78.5027930
2005-04-01	78.7677256
2005-05-01	78.4049002
2005-06-01	78.6593180
2005-07-01	78.7157182
2005-08-01	78.2610296
2005-09-01	78.9096128
2005-10-01	78.4328312
2005-11-01	78.2325220
2005-12-01	79.2858366
2006-01-01	77.6851860
2006-02-01	78.3798425
2006-03-01	78.7729936
2006-04-01	78.6326367
2006-05-01	78.3860353
2006-06-01	78.7239642
2006-07-01	79.2182450
2006-08-01	78.5073695
2006-09-01	79.4100936
2006-10-01	79.0798518
2006-11-01	78.7048736
2006-12-01	80.2164672
2007-01-01	78.5353705
2007-02-01	79.1338531
2007-03-01	79.5061005
2007-04-01	79.5755309
2007-05-01	79.6174679
2007-06-01	79.6342990
2007-07-01	79.8570535
2007-08-01	79.1440089
2007-09-01	80.0225123
2007-10-01	79.5044210
2007-11-01	79.3807903
2007-12-01	80.6161404
2008-01-01	79.7048369
2008-02-01	79.9025481
2008-03-01	79.8246379
2008-04-01	79.7257153
2008-05-01	79.5520164
2008-06-01	79.9286254
2008-07-01	79.8029799
2008-08-01	79.1768170
2008-09-01	79.9477179
2008-10-01	79.6984096
2008-11-01	79.0021111
2008-12-01	79.9451914
2009-01-01	78.0521887
2009-02-01	78.2840337
2009-03-01	77.8646436
2009-04-01	77.9968172
2009-05-01	77.4895420
2009-06-01	77.2376947
2009-07-01	77.6058344
2009-08-01	77.0483971
2009-09-01	77.8850912
2009-10-01	77.6379834
2009-11-01	77.5371681
2009-12-01	78.8376611
2010-01-01	77.8920645
2010-02-01	78.1839432
2010-03-01	78.1383612
2010-04-01	78.3235323
2010-05-01	78.0709508
2010-06-01	78.3406250
2010-07-01	78.6074149
2010-08-01	78.1309286
2010-09-01	79.1424016
2010-10-01	79.0485162
2010-11-01	78.9587608
2010-12-01	80.2755266
2011-01-01	78.8108778
2011-02-01	79.0654428
2011-03-01	79.2195532
2011-04-01	78.7731745
2011-05-01	78.8163898
2011-06-01	78.5596140
2011-07-01	78.6810460
2011-08-01	77.7482390
2011-09-01	78.6988084
2011-10-01	78.4080552
2011-11-01	78.1599051
2011-12-01	79.1464701
2012-01-01	78.0111246
2012-02-01	78.1479924
2012-03-01	78.1562400
2012-04-01	78.3490776
2012-05-01	78.4107657
2012-06-01	78.1251453
2012-07-01	78.2006109
2012-08-01	77.3036852
2012-09-01	78.0732865
2012-10-01	78.1526543
2012-11-01	77.7795160
2012-12-01	78.8854223
2013-01-01	77.5096935
2013-02-01	77.9399238
2013-03-01	77.6878307
2013-04-01	77.8342146
2013-05-01	77.8960215
2013-06-01	77.6599411
2013-07-01	77.7573542
2013-08-01	76.7156808
2013-09-01	77.5139410
2013-10-01	77.2849953
2013-11-01	77.0107533
2013-12-01	77.6985597
2014-01-01	76.4915666
2014-02-01	77.2738078
2014-03-01	77.2488519
2014-04-01	77.3451323
2014-05-01	77.0769728
2014-06-01	76.9839343
2014-07-01	77.0260997
2014-08-01	76.7919439
2014-09-01	76.6829701
2014-10-01	76.8501096
2014-11-01	77.1503563
2014-12-01	77.9302904
2015-01-01	76.5883601
2015-02-01	77.8583177
2015-03-01	77.7379019
2015-04-01	77.5603052
2015-05-01	77.9168821
2015-06-01	77.4691583
2015-07-01	77.5798504
2015-08-01	76.8265080
2015-09-01	77.1013982
2015-10-01	77.6174202
2015-11-01	77.7000725
2015-12-01	78.4894873
2016-01-01	77.2007819
2016-02-01	78.1267934
2016-03-01	77.6837832
2016-04-01	77.7145118
2016-05-01	77.8687892
2016-06-01	77.5780985
2016-07-01	77.5481754
2016-08-01	76.9449352
2016-09-01	76.9651745
2016-10-01	77.2947461
2016-11-01	77.4288778
2016-12-01	78.0860045
2017-01-01	76.5345490
2017-02-01	77.8362200
2017-03-01	77.7010918
2017-04-01	78.2115536
2017-05-01	78.0749365
2017-06-01	77.7954674
2017-07-01	77.8755840
2017-08-01	77.4651635
2017-09-01	77.9239153
2017-10-01	77.9398043
2017-11-01	78.4113074
2017-12-01	78.9029669
2018-01-01	77.6980605
2018-02-01	78.6309461
2018-03-01	78.2048645
2018-04-01	78.3269887
2018-05-01	78.3399612
2018-06-01	78.2890240
2018-07-01	78.2549882
2018-08-01	77.9670458
2018-09-01	78.3502978