Month	Percent
1978-02-01	15.0981855
1978-03-01	13.0693052
1978-04-01	12.2462976
1978-05-01	11.9360013
1978-06-01	11.7247793
1978-07-01	11.5749006
1978-08-01	12.5879917
1978-09-01	12.0136712
1978-10-01	11.6091645
1978-11-01	11.5064938
1978-12-01	15.0377346
1979-01-01	15.0020852
1979-02-01	14.2192964
1979-03-01	13.3797398
1979-04-01	13.1013846
1979-05-01	12.7333894
1979-06-01	12.4264383
1979-07-01	12.1573587
1979-08-01	12.1863104
1979-09-01	12.6695499
1979-10-01	12.2346820
1979-11-01	11.3447921
1979-12-01	14.0314719
1980-01-01	14.4018829
1980-02-01	13.6466037
1980-03-01	12.5302809
1980-04-01	12.6447041
1980-05-01	12.6138972
1980-06-01	12.3130022
1980-07-01	11.6482115
1980-08-01	12.1989817
1980-09-01	12.1264503
1980-10-01	11.5499344
1980-11-01	10.7340276
1980-12-01	13.7167320
1981-01-01	13.9166034
1981-02-01	12.7986595
1981-03-01	11.6629748
1981-04-01	10.8742007
1981-05-01	10.6468023
1981-06-01	9.9024316
1981-07-01	10.9242818
1981-08-01	10.7932373
1981-09-01	11.0179297
1981-10-01	10.5325512
1981-11-01	10.4811675
1981-12-01	13.2129619
1982-01-01	13.6620655
1982-02-01	13.9449882
1982-03-01	12.8321651
1982-04-01	12.3938491
1982-05-01	12.9620708
1982-06-01	12.8119184
1982-07-01	12.5671864
1982-08-01	12.8793410
1982-09-01	13.6510754
1982-10-01	14.4456321
1982-11-01	14.6881447
1982-12-01	19.0724639
1983-01-01	20.0399748
1983-02-01	20.2979910
1983-03-01	19.1266616
1983-04-01	18.2922195
1983-05-01	18.4867335
1983-06-01	17.6443790
1983-07-01	17.6023589
1983-08-01	17.9348021
1983-09-01	18.2445141
1983-10-01	16.5395117
1983-11-01	16.3479035
1983-12-01	18.8365584
1984-01-01	19.5847927
1984-02-01	19.4617089
1984-03-01	17.7171101
1984-04-01	17.2529737
1984-05-01	16.2487396
1984-06-01	16.2921457
1984-07-01	15.3395482
1984-08-01	15.9289299
1984-09-01	15.6040735
1984-10-01	15.0321745
1984-11-01	15.3449013
1984-12-01	17.1486944
1985-01-01	17.9777349
1985-02-01	17.6782774
1985-03-01	17.0648505
1985-04-01	15.1961988
1985-05-01	14.7689993
1985-06-01	14.5621721
1985-07-01	13.9930377
1985-08-01	14.2532292
1985-09-01	14.2574215
1985-10-01	13.0990138
1985-11-01	13.1711236
1985-12-01	15.5658027
1986-01-01	16.9629703
1986-02-01	16.4971577
1986-03-01	15.4907847
1986-04-01	14.7983262
1986-05-01	14.0856963
1986-06-01	13.4403071
1986-07-01	14.5172606
1986-08-01	14.4891492
1986-09-01	15.1589544
1986-10-01	14.4343463
1986-11-01	13.9164173
1986-12-01	16.5149447
1987-01-01	16.9247111
1987-02-01	17.1113889
1987-03-01	16.2641827
1987-04-01	14.9584781
1987-05-01	14.5920770
1987-06-01	13.9668340
1987-07-01	14.1416389
1987-08-01	14.5576099
1987-09-01	14.1664544
1987-10-01	13.6896109
1987-11-01	13.3194518
1987-12-01	15.2336846
1988-01-01	16.3386380
1988-02-01	15.3011234
1988-03-01	14.8968311
1988-04-01	14.6925132
1988-05-01	13.5169566
1988-06-01	13.0904981
1988-07-01	11.7484626
1988-08-01	12.8121301
1988-09-01	12.2923932
1988-10-01	11.4058028
1988-11-01	11.1178171
1988-12-01	13.3929661
1989-01-01	13.8415471
1989-02-01	13.0631858
1989-03-01	11.9387764
1989-04-01	10.8248248
1989-05-01	11.0460389
1989-06-01	10.1564431
1989-07-01	10.3229139
1989-08-01	10.3826707
1989-09-01	10.7963140
1989-10-01	10.1307407
1989-11-01	9.4782810
1989-12-01	11.6418565
1990-01-01	13.2541944
1990-02-01	13.0928038
1990-03-01	12.3903055
1990-04-01	12.0536943
1990-05-01	12.1137248
1990-06-01	11.3792040
1990-07-01	12.2142782
1990-08-01	13.1953295
1990-09-01	13.3421430
1990-10-01	12.9891804
1990-11-01	13.7107394
1990-12-01	16.3169658
1991-01-01	17.4225188
1991-02-01	17.5857910
1991-03-01	17.7303844
1991-04-01	18.0679329
1991-05-01	17.5717560
1991-06-01	16.2683113
1991-07-01	17.0562318
1991-08-01	17.0284036
1991-09-01	17.6338005
1991-10-01	16.3881501
1991-11-01	17.0106632
1991-12-01	19.8254484
1992-01-01	20.9049206
1992-02-01	21.0474127
1992-03-01	20.1236424
1992-04-01	18.6314060
1992-05-01	19.0532943
1992-06-01	18.7896667
1992-07-01	18.2601264
1992-08-01	19.0594579
1992-09-01	18.5893181
1992-10-01	18.5345566
1992-11-01	18.2894450
1992-12-01	19.9064249
1993-01-01	20.4844246
1993-02-01	20.9592146
1993-03-01	19.6521065
1993-04-01	18.2946653
1993-05-01	18.1158339
1993-06-01	18.0085050
1993-07-01	17.0969938
1993-08-01	18.2625299
1993-09-01	18.2740678
1993-10-01	17.2213637
1993-11-01	16.8604585
1993-12-01	18.9518348
1994-01-01	20.1474288
1994-02-01	20.2271664
1994-03-01	19.2460710
1994-04-01	17.6057607
1994-05-01	17.2026292
1994-06-01	16.3458561
1994-07-01	15.3769417
1994-08-01	16.0330222
1994-09-01	16.1102876
1994-10-01	14.1302422
1994-11-01	14.1694716
1994-12-01	15.6400041
1995-01-01	17.0553283
1995-02-01	17.4146388
1995-03-01	15.8078010
1995-04-01	14.3799000
1995-05-01	15.3742142
1995-06-01	14.5150785
1995-07-01	13.9381106
1995-08-01	14.3735698
1995-09-01	15.0128535
1995-10-01	14.3405401
1995-11-01	14.4526356
1995-12-01	15.5564888
1996-01-01	17.6751588
1996-02-01	17.2762127
1996-03-01	16.5256557
1996-04-01	15.7755890
1996-05-01	15.3406916
1996-06-01	14.1461788
1996-07-01	14.3990452
1996-08-01	14.9455551
1996-09-01	15.2369637
1996-10-01	15.0539355
1996-11-01	14.4027566
1996-12-01	16.7367835
1997-01-01	17.2210551
1997-02-01	18.4982155
1997-03-01	17.1312294
1997-04-01	15.9828331
1997-05-01	15.8490880
1997-06-01	15.3219411
1997-07-01	14.9469253
1997-08-01	15.6688392
1997-09-01	15.3929751
1997-10-01	14.2097581
1997-11-01	14.2936424
1997-12-01	15.4076490
1998-01-01	16.6961876
1998-02-01	16.3086669
1998-03-01	15.6510898
1998-04-01	14.6409599
1998-05-01	14.4258230
1998-06-01	14.3050421
1998-07-01	13.6413789
1998-08-01	14.0233085
1998-09-01	14.1342859
1998-10-01	12.5462324
1998-11-01	13.2249949
1998-12-01	13.8237500
1999-01-01	14.8719309
1999-02-01	14.9247854
1999-03-01	14.3813065
1999-04-01	13.4024234
1999-05-01	13.3338978
1999-06-01	12.1871761
1999-07-01	11.3785256
1999-08-01	12.9642593
1999-09-01	13.3808997
1999-10-01	11.7689155
1999-11-01	11.5862290
1999-12-01	13.0782353
2000-01-01	14.2261125
2000-02-01	14.3147099
2000-03-01	12.9415658
2000-04-01	12.2398313
2000-05-01	12.0707027
2000-06-01	10.9644858
2000-07-01	10.1036231
2000-08-01	11.8096686
2000-09-01	11.3080106
2000-10-01	10.7682809
2000-11-01	11.3564247
2000-12-01	12.8465460
2001-01-01	13.4498654
2001-02-01	14.8189984
2001-03-01	14.0171921
2001-04-01	13.4967269
2001-05-01	13.9709233
2001-06-01	13.2829622
2001-07-01	12.6765396
2001-08-01	12.7231982
2001-09-01	13.4321858
2001-10-01	13.3475298
2001-11-01	12.5544315
2001-12-01	13.9419735
2002-01-01	15.2473303
2002-02-01	14.8107000
2002-03-01	13.6624243
2002-04-01	12.5840561
2002-05-01	12.5549047
2002-06-01	12.5247556
2002-07-01	10.9010616
2002-08-01	12.6166826
2002-09-01	12.9058514
2002-10-01	11.6884565
2002-11-01	11.3834814
2002-12-01	12.5474835
2003-01-01	13.5877464
2003-02-01	13.4608293
2003-03-01	13.3081197
2003-04-01	12.4754663
2003-05-01	12.1148071
2003-06-01	11.4093470
2003-07-01	10.9612406
2003-08-01	11.2117526
2003-09-01	11.7020882
2003-10-01	10.7808263
2003-11-01	10.3979494
2003-12-01	12.0089896
2004-01-01	13.0912447
2004-02-01	12.7908631
2004-03-01	12.3341899
2004-04-01	11.2723466
2004-05-01	10.9135337
2004-06-01	10.7890959
2004-07-01	10.1685173
2004-08-01	11.4713094
2004-09-01	11.3750804
2004-10-01	10.5425449
2004-11-01	10.1071423
2004-12-01	11.4640309
2005-01-01	12.2533094
2005-02-01	11.8600387
2005-03-01	11.5505618
2005-04-01	11.0174550
2005-05-01	10.4119675
2005-06-01	9.7883405
2005-07-01	9.5675477
2005-08-01	9.6431020
2005-09-01	10.7652695
2005-10-01	10.1922950
2005-11-01	9.2591340
2005-12-01	11.0093917
2006-01-01	11.8215439
2006-02-01	11.9953402
2006-03-01	10.9425556
2006-04-01	10.7540135
2006-05-01	9.9352581
2006-06-01	9.2733614
2006-07-01	8.6071513
2006-08-01	9.3602508
2006-09-01	10.0881936
2006-10-01	8.5110968
2006-11-01	8.9640394
2006-12-01	9.9890126
2007-01-01	10.6738021
2007-02-01	10.7966159
2007-03-01	9.8785063
2007-04-01	9.1060465
2007-05-01	8.8890411
2007-06-01	8.4534313
2007-07-01	8.0784313
2007-08-01	9.3054578
2007-09-01	9.1914601
2007-10-01	9.0526986
2007-11-01	9.1803653
2007-12-01	9.6816588
2008-01-01	9.9941371
2008-02-01	9.1881082
2008-03-01	9.1403407
2008-04-01	8.9912452
2008-05-01	9.0282417
2008-06-01	8.5144791
2008-07-01	7.9539676
2008-08-01	7.3935616
2008-09-01	8.6826435
2008-10-01	8.1469148
2008-11-01	8.6639418
2008-12-01	9.9521552
2009-01-01	11.1798884
2009-02-01	12.3087526
2009-03-01	12.7600273
2009-04-01	11.7326077
2009-05-01	12.0725558
2009-06-01	11.5263782
2009-07-01	10.4837688
2009-08-01	11.2979595
2009-09-01	11.5232110
2009-10-01	10.5348380
2009-11-01	10.6642132
2009-12-01	11.3748383
2010-01-01	12.4183359
2010-02-01	12.9084300
2010-03-01	12.6685181
2010-04-01	12.0503209
2010-05-01	11.2255907
2010-06-01	11.0515750
2010-07-01	10.5697991
2010-08-01	11.2122193
2010-09-01	11.1620412
2010-10-01	11.2824416
2010-11-01	10.6835579
2010-12-01	11.2602053
2011-01-01	12.7874066
2011-02-01	13.3583757
2011-03-01	12.1146466
2011-04-01	11.3860713
2011-05-01	10.9482297
2011-06-01	10.5937399
2011-07-01	10.1729896
2011-08-01	10.8313623
2011-09-01	11.1253360
2011-10-01	10.3580995
2011-11-01	10.6313022
2011-12-01	12.0035782
2012-01-01	12.4438788
2012-02-01	13.3472664
2012-03-01	12.7190793
2012-04-01	10.9546692
2012-05-01	11.8091610
2012-06-01	11.0361425
2012-07-01	10.9996229
2012-08-01	11.0591127
2012-09-01	11.7983464
2012-10-01	11.4297428
2012-11-01	10.7608289
2012-12-01	12.2285591
2013-01-01	13.1000096
2013-02-01	13.7856933
2013-03-01	13.2344358
2013-04-01	11.7467076
2013-05-01	11.2830845
2013-06-01	11.2230533
2013-07-01	11.0142395
2013-08-01	12.3146115
2013-09-01	12.5851438
2013-10-01	12.2965624
2013-11-01	11.3247689
2013-12-01	12.5978652
2014-01-01	13.4284261
2014-02-01	14.9231091
2014-03-01	13.6247966
2014-04-01	12.9173242
2014-05-01	12.9234086
2014-06-01	12.7294742
2014-07-01	13.0496407
2014-08-01	12.8448827
2014-09-01	13.2368428
2014-10-01	13.5727852
2014-11-01	13.1567508
2014-12-01	13.2056452
2015-01-01	15.4744972
2015-02-01	14.5946901
2015-03-01	14.6725606
2015-04-01	13.3621547
2015-05-01	12.8437414
2015-06-01	12.4343154
2015-07-01	13.0724918
2015-08-01	12.8952485
2015-09-01	12.4251912
2015-10-01	11.9009236
2015-11-01	11.2740260
2015-12-01	12.2049298
2016-01-01	13.8909927
2016-02-01	12.7511071
2016-03-01	12.8726924
2016-04-01	12.1232954
2016-05-01	11.9621337
2016-06-01	12.3817733
2016-07-01	12.7127729
2016-08-01	12.6748572
2016-09-01	12.3224379
2016-10-01	11.9935711
2016-11-01	12.5813068
2016-12-01	13.3590806
2017-01-01	13.5123275
2017-02-01	13.9612018
2017-03-01	14.2398008
2017-04-01	12.6406383
2017-05-01	12.0907037
2017-06-01	12.4341567
2017-07-01	12.3362472
2017-08-01	12.4742060
2017-09-01	12.1520911
2017-10-01	11.4424958
2017-11-01	11.4423088
2017-12-01	12.4392974
2018-01-01	13.4611695
2018-02-01	14.2044094
2018-03-01	13.4284773
2018-04-01	12.5214146
2018-05-01	11.0125287
2018-06-01	10.6732028
2018-07-01	10.6726090
2018-08-01	11.5945873
2018-09-01	11.1098951