Month	Percent
1978-02-01	16.5018014
1978-03-01	14.7459735
1978-04-01	13.6070710
1978-05-01	13.1191387
1978-06-01	12.6146506
1978-07-01	12.3808703
1978-08-01	13.2302915
1978-09-01	12.3594419
1978-10-01	12.1813193
1978-11-01	12.3607051
1978-12-01	16.9668991
1979-01-01	15.9533572
1979-02-01	15.7523284
1979-03-01	14.9506334
1979-04-01	14.5630063
1979-05-01	14.6688732
1979-06-01	14.3172425
1979-07-01	13.4918362
1979-08-01	13.6255115
1979-09-01	14.4087747
1979-10-01	14.0210076
1979-11-01	12.7985488
1979-12-01	15.3790547
1980-01-01	15.7526494
1980-02-01	15.1958737
1980-03-01	13.9905999
1980-04-01	14.1157885
1980-05-01	14.3054546
1980-06-01	14.0621110
1980-07-01	12.8480803
1980-08-01	13.5160791
1980-09-01	13.2764286
1980-10-01	12.7378423
1980-11-01	12.2292983
1980-12-01	15.0486953
1981-01-01	15.2319303
1981-02-01	14.2460046
1981-03-01	13.6247930
1981-04-01	12.8661736
1981-05-01	12.4791171
1981-06-01	11.6706634
1981-07-01	13.1199366
1981-08-01	12.3838992
1981-09-01	12.3456051
1981-10-01	11.4187457
1981-11-01	11.3057306
1981-12-01	14.2135348
1982-01-01	15.4292271
1982-02-01	15.5350099
1982-03-01	14.2984924
1982-04-01	13.8000880
1982-05-01	13.8773686
1982-06-01	13.9334347
1982-07-01	13.0728445
1982-08-01	12.3628796
1982-09-01	13.6374179
1982-10-01	14.7847340
1982-11-01	14.8388854
1982-12-01	18.5247596
1983-01-01	19.1856407
1983-02-01	19.9253242
1983-03-01	18.2674729
1983-04-01	17.5787970
1983-05-01	17.2877497
1983-06-01	16.1071029
1983-07-01	15.5040207
1983-08-01	16.1315926
1983-09-01	16.7770640
1983-10-01	15.1849943
1983-11-01	14.5589599
1983-12-01	17.4133369
1984-01-01	18.1425150
1984-02-01	18.8730718
1984-03-01	16.9939468
1984-04-01	16.9035772
1984-05-01	15.2427615
1984-06-01	15.6630722
1984-07-01	14.7703276
1984-08-01	14.2854377
1984-09-01	14.6142412
1984-10-01	13.7901683
1984-11-01	14.7639510
1984-12-01	16.4546897
1985-01-01	16.9321672
1985-02-01	17.3376995
1985-03-01	16.3121527
1985-04-01	14.8200656
1985-05-01	14.3951665
1985-06-01	13.9340403
1985-07-01	13.0086050
1985-08-01	13.2889324
1985-09-01	14.2718322
1985-10-01	12.6983358
1985-11-01	13.2069753
1985-12-01	15.7219234
1986-01-01	16.4478469
1986-02-01	16.2973489
1986-03-01	15.2670162
1986-04-01	14.8825048
1986-05-01	14.1928552
1986-06-01	13.4795678
1986-07-01	14.1951308
1986-08-01	14.0407783
1986-09-01	14.8008592
1986-10-01	14.1007480
1986-11-01	13.5535044
1986-12-01	16.0482958
1987-01-01	16.6562423
1987-02-01	17.0415613
1987-03-01	16.5435348
1987-04-01	15.5210127
1987-05-01	14.2097242
1987-06-01	13.9040008
1987-07-01	14.1185269
1987-08-01	14.2856278
1987-09-01	13.9570738
1987-10-01	13.1794026
1987-11-01	13.0576610
1987-12-01	14.9935297
1988-01-01	15.9532808
1988-02-01	15.1577816
1988-03-01	15.5090881
1988-04-01	14.5545643
1988-05-01	12.8829731
1988-06-01	13.3893388
1988-07-01	11.5588143
1988-08-01	13.1035284
1988-09-01	12.2103632
1988-10-01	11.7425506
1988-11-01	11.0563402
1988-12-01	14.0019066
1989-01-01	13.7551143
1989-02-01	13.7175418
1989-03-01	12.5922464
1989-04-01	11.5411820
1989-05-01	11.8543026
1989-06-01	11.0211930
1989-07-01	11.2803466
1989-08-01	10.7996579
1989-09-01	11.4903387
1989-10-01	10.8428219
1989-11-01	9.7160762
1989-12-01	11.7191749
1990-01-01	13.2395935
1990-02-01	14.0582491
1990-03-01	12.7321341
1990-04-01	12.1640951
1990-05-01	11.7554301
1990-06-01	11.2427415
1990-07-01	11.8578754
1990-08-01	12.3773197
1990-09-01	13.0482395
1990-10-01	12.7218516
1990-11-01	12.7204463
1990-12-01	15.2979114
1991-01-01	16.6697929
1991-02-01	16.6170617
1991-03-01	16.5923502
1991-04-01	16.6312112
1991-05-01	16.3356580
1991-06-01	15.2740571
1991-07-01	15.6714144
1991-08-01	15.5500414
1991-09-01	16.3324286
1991-10-01	15.0997481
1991-11-01	15.9826881
1991-12-01	18.4467135
1992-01-01	18.9032858
1992-02-01	19.7631895
1992-03-01	18.8746058
1992-04-01	17.1180217
1992-05-01	17.3041941
1992-06-01	17.2132665
1992-07-01	16.4848838
1992-08-01	17.7030750
1992-09-01	16.6892099
1992-10-01	16.4519004
1992-11-01	16.2865729
1992-12-01	18.5584923
1993-01-01	18.7949587
1993-02-01	19.2165539
1993-03-01	18.2859847
1993-04-01	16.3805834
1993-05-01	16.2275743
1993-06-01	16.7947035
1993-07-01	15.6917777
1993-08-01	16.3903098
1993-09-01	17.3255168
1993-10-01	16.6933250
1993-11-01	16.4185545
1993-12-01	18.2132030
1994-01-01	20.5345465
1994-02-01	19.4576390
1994-03-01	18.8567010
1994-04-01	16.7407260
1994-05-01	15.7162834
1994-06-01	15.8049664
1994-07-01	14.8962158
1994-08-01	15.3554951
1994-09-01	15.7417197
1994-10-01	13.8196279
1994-11-01	13.0611089
1994-12-01	15.0384618
1995-01-01	16.8051098
1995-02-01	17.9199654
1995-03-01	16.2619181
1995-04-01	14.2891602
1995-05-01	14.8658634
1995-06-01	13.4938445
1995-07-01	12.9255186
1995-08-01	14.2600948
1995-09-01	14.0192235
1995-10-01	14.0898085
1995-11-01	13.9764908
1995-12-01	14.9190740
1996-01-01	16.4207814
1996-02-01	16.8694318
1996-03-01	15.7797911
1996-04-01	14.9430459
1996-05-01	14.4737591
1996-06-01	12.9502641
1996-07-01	14.3101647
1996-08-01	14.2382567
1996-09-01	14.6424943
1996-10-01	13.9030283
1996-11-01	13.1392050
1996-12-01	15.8947817
1997-01-01	15.8684461
1997-02-01	17.3319083
1997-03-01	15.6982068
1997-04-01	14.8670670
1997-05-01	14.7842031
1997-06-01	14.5066625
1997-07-01	13.5457079
1997-08-01	14.6299353
1997-09-01	13.3601681
1997-10-01	13.1692191
1997-11-01	13.3179242
1997-12-01	14.5935734
1998-01-01	16.3191745
1998-02-01	15.4449895
1998-03-01	14.8722279
1998-04-01	14.3883401
1998-05-01	13.3232968
1998-06-01	12.7287904
1998-07-01	12.0301749
1998-08-01	12.6041191
1998-09-01	12.8698281
1998-10-01	12.1362982
1998-11-01	12.6579990
1998-12-01	12.8935181
1999-01-01	14.1052434
1999-02-01	14.4993914
1999-03-01	14.3455808
1999-04-01	12.8547750
1999-05-01	12.9262154
1999-06-01	11.3363806
1999-07-01	10.4061773
1999-08-01	11.8572023
1999-09-01	12.6621059
1999-10-01	11.3477423
1999-11-01	11.0319885
1999-12-01	11.7350298
2000-01-01	13.3857132
2000-02-01	13.8389202
2000-03-01	12.6096525
2000-04-01	11.5039804
2000-05-01	11.5045651
2000-06-01	9.9100530
2000-07-01	9.1399711
2000-08-01	10.8524352
2000-09-01	10.6141014
2000-10-01	9.8520030
2000-11-01	9.7184497
2000-12-01	11.6911191
2001-01-01	11.9064539
2001-02-01	13.8520933
2001-03-01	13.2388222
2001-04-01	12.2360519
2001-05-01	12.9901180
2001-06-01	12.0121212
2001-07-01	11.7176413
2001-08-01	12.0849878
2001-09-01	11.9127374
2001-10-01	11.7002483
2001-11-01	10.8204988
2001-12-01	12.8654459
2002-01-01	13.9425883
2002-02-01	13.5312084
2002-03-01	12.8627941
2002-04-01	10.8540244
2002-05-01	11.0099836
2002-06-01	11.8728582
2002-07-01	9.9235451
2002-08-01	11.7677320
2002-09-01	12.0947268
2002-10-01	11.0649627
2002-11-01	10.3185033
2002-12-01	11.3758046
2003-01-01	12.1269377
2003-02-01	12.4996948
2003-03-01	12.9261295
2003-04-01	11.0721773
2003-05-01	11.1442736
2003-06-01	10.1853599
2003-07-01	10.0503846
2003-08-01	10.7317110
2003-09-01	11.1466656
2003-10-01	10.5195004
2003-11-01	10.6775240
2003-12-01	12.1178026
2004-01-01	13.1559608
2004-02-01	12.5290673
2004-03-01	11.8262308
2004-04-01	10.4126723
2004-05-01	10.4904586
2004-06-01	9.9342118
2004-07-01	10.0188312
2004-08-01	10.7986045
2004-09-01	10.5594370
2004-10-01	10.0354887
2004-11-01	9.2850291
2004-12-01	11.1864078
2005-01-01	12.0761452
2005-02-01	11.4602416
2005-03-01	12.0483143
2005-04-01	11.2181597
2005-05-01	9.7237081
2005-06-01	9.4945070
2005-07-01	9.5154565
2005-08-01	9.5747038
2005-09-01	10.3513749
2005-10-01	9.4643407
2005-11-01	8.6053114
2005-12-01	10.4174598
2006-01-01	10.6920005
2006-02-01	11.3214607
2006-03-01	9.9248174
2006-04-01	10.2404414
2006-05-01	8.9662963
2006-06-01	8.8266778
2006-07-01	7.9772921
2006-08-01	9.3707417
2006-09-01	8.9899805
2006-10-01	8.2928918
2006-11-01	8.8524383
2006-12-01	10.0846689
2007-01-01	10.4931937
2007-02-01	10.5691949
2007-03-01	9.9504247
2007-04-01	9.1280324
2007-05-01	8.6753023
2007-06-01	8.3237316
2007-07-01	8.2161438
2007-08-01	9.1978530
2007-09-01	9.3053374
2007-10-01	8.7596590
2007-11-01	9.0209750
2007-12-01	9.2488875
2008-01-01	9.8412532
2008-02-01	9.0597626
2008-03-01	8.7456457
2008-04-01	9.2293520
2008-05-01	8.8337535
2008-06-01	8.1598868
2008-07-01	8.7688286
2008-08-01	7.2371720
2008-09-01	8.0487177
2008-10-01	7.9140433
2008-11-01	8.0545754
2008-12-01	9.1715633
2009-01-01	10.1342056
2009-02-01	11.0509837
2009-03-01	12.0777636
2009-04-01	10.9656868
2009-05-01	10.4265930
2009-06-01	10.3899584
2009-07-01	9.2292384
2009-08-01	10.1481534
2009-09-01	10.2505599
2009-10-01	9.4238361
2009-11-01	9.2962642
2009-12-01	10.7075388
2010-01-01	11.7126242
2010-02-01	12.3131446
2010-03-01	11.8196081
2010-04-01	11.3275142
2010-05-01	10.4115597
2010-06-01	10.3610696
2010-07-01	10.6262645
2010-08-01	11.4125070
2010-09-01	10.6509979
2010-10-01	11.2970263
2010-11-01	10.6588454
2010-12-01	10.8458718
2011-01-01	12.3681388
2011-02-01	12.7509109
2011-03-01	12.1419969
2011-04-01	10.4893843
2011-05-01	10.8189366
2011-06-01	9.7756672
2011-07-01	9.5280404
2011-08-01	9.3618300
2011-09-01	10.0584562
2011-10-01	9.1291871
2011-11-01	10.5827407
2011-12-01	12.1491809
2012-01-01	12.4469242
2012-02-01	12.7139882
2012-03-01	12.2676500
2012-04-01	10.1071257
2012-05-01	11.3974859
2012-06-01	10.7097839
2012-07-01	10.4367167
2012-08-01	9.8014590
2012-09-01	10.4271154
2012-10-01	10.8353154
2012-11-01	9.0803001
2012-12-01	10.9981158
2013-01-01	12.1288413
2013-02-01	13.1989937
2013-03-01	11.8444697
2013-04-01	10.7414163
2013-05-01	10.0037351
2013-06-01	10.2993163
2013-07-01	10.2009126
2013-08-01	11.3338416
2013-09-01	11.7195260
2013-10-01	11.9420165
2013-11-01	10.8855526
2013-12-01	11.8576782
2014-01-01	12.9556481
2014-02-01	14.7435807
2014-03-01	13.3784192
2014-04-01	12.4884151
2014-05-01	12.4449802
2014-06-01	10.9067826
2014-07-01	11.2021695
2014-08-01	11.4101415
2014-09-01	12.2650329
2014-10-01	12.7364990
2014-11-01	12.2488534
2014-12-01	12.6894271
2015-01-01	14.3335376
2015-02-01	13.8314779
2015-03-01	13.6735809
2015-04-01	12.0079076
2015-05-01	11.5487371
2015-06-01	11.2887996
2015-07-01	11.9196439
2015-08-01	12.0883865
2015-09-01	10.9702155
2015-10-01	10.6467224
2015-11-01	9.9114690
2015-12-01	10.6678679
2016-01-01	11.7646482
2016-02-01	11.4134238
2016-03-01	11.6162406
2016-04-01	11.3692762
2016-05-01	10.8867936
2016-06-01	11.5838876
2016-07-01	11.8767255
2016-08-01	11.5930907
2016-09-01	11.0895335
2016-10-01	10.5023074
2016-11-01	11.4722346
2016-12-01	11.6442010
2017-01-01	12.1271532
2017-02-01	12.6482481
2017-03-01	13.4477506
2017-04-01	12.4060607
2017-05-01	11.2984812
2017-06-01	11.2333421
2017-07-01	11.0842032
2017-08-01	11.6418711
2017-09-01	10.6162374
2017-10-01	10.5483063
2017-11-01	10.2402400
2017-12-01	10.4615721
2018-01-01	12.4907568
2018-02-01	13.7959417
2018-03-01	12.2785920
2018-04-01	11.3895960
2018-05-01	10.0521705
2018-06-01	8.6015711
2018-07-01	9.1914081
2018-08-01	10.3388974
2018-09-01	10.3237444