Month	Percent
1978-02-01	6.1880828
1978-03-01	5.3345949
1978-04-01	5.1547306
1978-05-01	5.1389683
1978-06-01	5.2859342
1978-07-01	5.2022621
1978-08-01	5.4553479
1978-09-01	5.3753096
1978-10-01	5.1223718
1978-11-01	5.0981350
1978-12-01	5.8128696
1979-01-01	6.0792437
1979-02-01	5.8593892
1979-03-01	5.4105294
1979-04-01	5.2920387
1979-05-01	5.1199348
1979-06-01	5.0128224
1979-07-01	4.9281884
1979-08-01	4.7964202
1979-09-01	4.8761104
1979-10-01	4.7613199
1979-11-01	4.4766379
1979-12-01	5.3383127
1980-01-01	5.8134071
1980-02-01	5.5149835
1980-03-01	5.0712109
1980-04-01	4.9982331
1980-05-01	5.2398497
1980-06-01	5.0143330
1980-07-01	4.9054886
1980-08-01	5.0003761
1980-09-01	4.9977315
1980-10-01	4.6445072
1980-11-01	4.3693086
1980-12-01	5.2557662
1981-01-01	5.5102626
1981-02-01	5.1598703
1981-03-01	4.7547352
1981-04-01	4.4197546
1981-05-01	4.5442704
1981-06-01	4.2866750
1981-07-01	4.6146757
1981-08-01	4.7073033
1981-09-01	4.8736100
1981-10-01	4.7104370
1981-11-01	4.7371434
1981-12-01	5.3822415
1982-01-01	5.5643937
1982-02-01	5.8199372
1982-03-01	5.5080904
1982-04-01	5.3044473
1982-05-01	5.5780501
1982-06-01	5.5892334
1982-07-01	5.8835794
1982-08-01	6.3236723
1982-09-01	6.7506938
1982-10-01	7.0735436
1982-11-01	7.5678509
1982-12-01	9.1882809
1983-01-01	9.9099195
1983-02-01	10.0468232
1983-03-01	9.9247570
1983-04-01	9.8584031
1983-05-01	9.9785345
1983-06-01	9.7606045
1983-07-01	9.8344491
1983-08-01	9.9161891
1983-09-01	9.8709153
1983-10-01	9.1939794
1983-11-01	8.8651086
1983-12-01	9.4363582
1984-01-01	10.2584375
1984-02-01	9.8038207
1984-03-01	9.0661089
1984-04-01	8.7099446
1984-05-01	8.6256891
1984-06-01	8.4698564
1984-07-01	8.0775630
1984-08-01	8.6649673
1984-09-01	8.4782776
1984-10-01	7.9546378
1984-11-01	7.7437541
1984-12-01	8.3897808
1985-01-01	9.1184469
1985-02-01	8.7279428
1985-03-01	8.6950112
1985-04-01	8.1282107
1985-05-01	8.1271051
1985-06-01	8.1948845
1985-07-01	7.7221914
1985-08-01	7.8274511
1985-09-01	7.5617251
1985-10-01	6.9515685
1985-11-01	6.8868757
1985-12-01	7.3817252
1986-01-01	8.1416192
1986-02-01	8.0752516
1986-03-01	7.6963165
1986-04-01	7.4115213
1986-05-01	7.4013255
1986-06-01	7.0169991
1986-07-01	7.5016755
1986-08-01	7.6728230
1986-09-01	7.8593841
1986-10-01	7.4497397
1986-11-01	7.5564880
1986-12-01	8.2536649
1987-01-01	8.7186894
1987-02-01	8.5205578
1987-03-01	8.2486143
1987-04-01	7.7034400
1987-05-01	7.9132070
1987-06-01	7.6074989
1987-07-01	7.5762605
1987-08-01	7.5059355
1987-09-01	7.4175479
1987-10-01	7.3607198
1987-11-01	7.1277594
1987-12-01	7.4324890
1988-01-01	7.8914377
1988-02-01	7.5440333
1988-03-01	7.2581020
1988-04-01	7.3491706
1988-05-01	6.9677574
1988-06-01	6.6780278
1988-07-01	6.3507637
1988-08-01	6.5212764
1988-09-01	6.4987639
1988-10-01	6.0191325
1988-11-01	5.7132263
1988-12-01	6.4268883
1989-01-01	6.9694233
1989-02-01	6.7455750
1989-03-01	6.0899863
1989-04-01	5.6525765
1989-05-01	5.7370335
1989-06-01	5.3842906
1989-07-01	5.4438281
1989-08-01	5.3930794
1989-09-01	5.5973050
1989-10-01	4.9967149
1989-11-01	4.9222796
1989-12-01	5.6030529
1990-01-01	6.3459092
1990-02-01	6.3296452
1990-03-01	6.0616533
1990-04-01	6.0286830
1990-05-01	6.2751789
1990-06-01	6.0335850
1990-07-01	6.5648544
1990-08-01	6.8600451
1990-09-01	7.2578971
1990-10-01	7.1190177
1990-11-01	7.6639263
1990-12-01	8.2529967
1991-01-01	9.2622275
1991-02-01	9.4238150
1991-03-01	9.6463753
1991-04-01	10.0293336
1991-05-01	9.7318513
1991-06-01	9.3047735
1991-07-01	9.9282643
1991-08-01	10.1238740
1991-09-01	10.3801092
1991-10-01	9.8708517
1991-11-01	10.0277775
1991-12-01	10.9126375
1992-01-01	11.7069898
1992-02-01	11.7018949
1992-03-01	11.2251794
1992-04-01	10.8441630
1992-05-01	11.2072004
1992-06-01	11.0598270
1992-07-01	11.2814363
1992-08-01	11.1872617
1992-09-01	11.1931015
1992-10-01	11.1076004
1992-11-01	11.3910485
1992-12-01	11.7827115
1993-01-01	12.5375945
1993-02-01	12.6958219
1993-03-01	11.7488981
1993-04-01	11.7100268
1993-05-01	11.6464374
1993-06-01	11.4190051
1993-07-01	11.0590941
1993-08-01	11.4215992
1993-09-01	11.1965985
1993-10-01	10.7833589
1993-11-01	10.7317951
1993-12-01	11.1704694
1994-01-01	11.8564901
1994-02-01	11.7245402
1994-03-01	11.1053773
1994-04-01	10.3285578
1994-05-01	10.1083875
1994-06-01	9.7988725
1994-07-01	9.2620190
1994-08-01	9.5083282
1994-09-01	9.5361246
1994-10-01	8.7335393
1994-11-01	8.8851337
1994-12-01	8.9529569
1995-01-01	9.8374991
1995-02-01	9.6010972
1995-03-01	8.8532304
1995-04-01	8.5258759
1995-05-01	8.8669911
1995-06-01	8.5275688
1995-07-01	8.3778122
1995-08-01	8.4186674
1995-09-01	8.8094515
1995-10-01	8.4389833
1995-11-01	8.1891537
1995-12-01	8.4659912
1996-01-01	9.6297292
1996-02-01	9.3255998
1996-03-01	9.0561865
1996-04-01	8.8404685
1996-05-01	8.5142426
1996-06-01	8.2410527
1996-07-01	8.0610062
1996-08-01	8.7850722
1996-09-01	8.7414924
1996-10-01	8.4465045
1996-11-01	8.2439941
1996-12-01	8.6342047
1997-01-01	9.3862481
1997-02-01	9.6533911
1997-03-01	9.1658969
1997-04-01	8.7538385
1997-05-01	8.7022159
1997-06-01	8.2858234
1997-07-01	8.4192015
1997-08-01	8.4648305
1997-09-01	8.4920468
1997-10-01	7.8037804
1997-11-01	7.8629411
1997-12-01	8.0079884
1998-01-01	8.6384505
1998-02-01	8.6947254
1998-03-01	8.3686228
1998-04-01	7.6779955
1998-05-01	8.0392275
1998-06-01	8.0415323
1998-07-01	7.8993072
1998-08-01	8.0534663
1998-09-01	7.9257434
1998-10-01	7.1594183
1998-11-01	7.4666689
1998-12-01	7.3346943
1999-01-01	7.9356017
1999-02-01	7.9518387
1999-03-01	7.2495071
1999-04-01	7.1417256
1999-05-01	7.1836720
1999-06-01	6.6442041
1999-07-01	6.4265661
1999-08-01	6.9526229
1999-09-01	7.2729864
1999-10-01	6.6079469
1999-11-01	6.2376039
1999-12-01	6.8409775
2000-01-01	7.4665221
2000-02-01	7.1654953
2000-03-01	6.7199292
2000-04-01	6.4177592
2000-05-01	6.4112968
2000-06-01	6.1665956
2000-07-01	5.8337449
2000-08-01	6.2593914
2000-09-01	6.3602440
2000-10-01	6.0159888
2000-11-01	6.1996959
2000-12-01	6.4660190
2001-01-01	7.0797589
2001-02-01	7.4296917
2001-03-01	6.8925135
2001-04-01	7.0350821
2001-05-01	6.9917067
2001-06-01	6.9712571
2001-07-01	6.6730159
2001-08-01	6.8660864
2001-09-01	7.1849443
2001-10-01	6.9835312
2001-11-01	6.8229183
2001-12-01	6.8139412
2002-01-01	7.7671419
2002-02-01	7.5303630
2002-03-01	6.9950244
2002-04-01	6.7729263
2002-05-01	6.6509650
2002-06-01	6.3800487
2002-07-01	5.7986236
2002-08-01	6.2581675
2002-09-01	6.4489225
2002-10-01	5.8276506
2002-11-01	5.8104770
2002-12-01	6.1375696
2003-01-01	6.8685798
2003-02-01	6.6719341
2003-03-01	6.1734510
2003-04-01	6.2516765
2003-05-01	6.0893862
2003-06-01	6.0318305
2003-07-01	5.6348970
2003-08-01	5.5107532
2003-09-01	5.6872558
2003-10-01	5.4140204
2003-11-01	5.0588689
2003-12-01	5.2713689
2004-01-01	5.8615085
2004-02-01	5.9910441
2004-03-01	5.4293727
2004-04-01	5.5041835
2004-05-01	5.2436083
2004-06-01	5.2645497
2004-07-01	4.9311496
2004-08-01	5.2057322
2004-09-01	5.4536753
2004-10-01	4.8091304
2004-11-01	4.8110537
2004-12-01	4.8780531
2005-01-01	5.4568042
2005-02-01	5.3637555
2005-03-01	5.0124953
2005-04-01	4.9563987
2005-05-01	4.9386641
2005-06-01	4.6424278
2005-07-01	4.3209640
2005-08-01	4.6557527
2005-09-01	4.9758132
2005-10-01	4.7031095
2005-11-01	4.6124393
2005-12-01	4.9175431
2006-01-01	5.6641876
2006-02-01	5.5785918
2006-03-01	4.9533698
2006-04-01	4.8185251
2006-05-01	4.7526625
2006-06-01	4.5696376
2006-07-01	4.2276069
2006-08-01	4.4067529
2006-09-01	4.6947708
2006-10-01	4.1377470
2006-11-01	4.1054534
2006-12-01	4.1303619
2007-01-01	4.7772537
2007-02-01	4.7164674
2007-03-01	4.2309939
2007-04-01	4.0380337
2007-05-01	3.9338914
2007-06-01	3.8512048
2007-07-01	3.5184757
2007-08-01	3.7679483
2007-09-01	3.8531855
2007-10-01	3.8215027
2007-11-01	3.9006394
2007-12-01	4.0924334
2008-01-01	4.1688243
2008-02-01	3.9932111
2008-03-01	4.0580658
2008-04-01	4.0704240
2008-05-01	4.0538117
2008-06-01	3.8592355
2008-07-01	3.4991732
2008-08-01	3.5564521
2008-09-01	4.0548993
2008-10-01	3.8158824
2008-11-01	3.8802000
2008-12-01	4.4409556
2009-01-01	5.4884914
2009-02-01	5.8003734
2009-03-01	5.9867808
2009-04-01	5.6866667
2009-05-01	6.2138567
2009-06-01	6.0466114
2009-07-01	5.5605405
2009-08-01	5.6191143
2009-09-01	5.7137057
2009-10-01	5.4990594
2009-11-01	5.3521945
2009-12-01	5.3641218
2010-01-01	5.6931394
2010-02-01	5.8841783
2010-03-01	5.7827852
2010-04-01	5.4279593
2010-05-01	5.2312150
2010-06-01	4.9455044
2010-07-01	4.7701362
2010-08-01	4.5513568
2010-09-01	4.9010725
2010-10-01	4.8507257
2010-11-01	4.4440200
2010-12-01	4.4353984
2011-01-01	5.1228697
2011-02-01	5.3145365
2011-03-01	4.7807541
2011-04-01	4.8430188
2011-05-01	4.7216261
2011-06-01	4.5785673
2011-07-01	4.6101703
2011-08-01	5.0583646
2011-09-01	5.1377416
2011-10-01	5.0392452
2011-11-01	4.8028917
2011-12-01	4.7180772
2012-01-01	5.3068210
2012-02-01	5.6259382
2012-03-01	5.2857473
2012-04-01	4.8432053
2012-05-01	4.8956606
2012-06-01	4.7379131
2012-07-01	4.8487241
2012-08-01	5.0938350
2012-09-01	5.6692046
2012-10-01	5.1484994
2012-11-01	4.9865568
2012-12-01	5.2176265
2013-01-01	5.8737358
2013-02-01	5.9934574
2013-03-01	5.9424057
2013-04-01	5.5083796
2013-05-01	5.5149327
2013-06-01	5.5774456
2013-07-01	5.4222628
2013-08-01	5.7312094
2013-09-01	5.7129145
2013-10-01	5.7922300
2013-11-01	5.5915837
2013-12-01	5.8318268
2014-01-01	6.3474927
2014-02-01	6.4335609
2014-03-01	5.8827334
2014-04-01	5.7175301
2014-05-01	5.6603890
2014-06-01	5.8915120
2014-07-01	6.1194824
2014-08-01	5.9944217
2014-09-01	6.0512661
2014-10-01	6.0810038
2014-11-01	5.9825453
2014-12-01	5.8206858
2015-01-01	6.9014969
2015-02-01	6.5626016
2015-03-01	6.3279042
2015-04-01	6.0443590
2015-05-01	5.7715083
2015-06-01	5.8430670
2015-07-01	6.0079017
2015-08-01	6.2128199
2015-09-01	6.1678334
2015-10-01	5.7574958
2015-11-01	5.4251384
2015-12-01	5.4883482
2016-01-01	6.5528012
2016-02-01	5.9539742
2016-03-01	5.8847229
2016-04-01	5.4895047
2016-05-01	5.4942848
2016-06-01	5.2744389
2016-07-01	5.5039551
2016-08-01	5.6373569
2016-09-01	5.5736474
2016-10-01	5.3667972
2016-11-01	5.3720012
2016-12-01	5.7035595
2017-01-01	6.0281465
2017-02-01	6.1351173
2017-03-01	5.9464082
2017-04-01	5.2811722
2017-05-01	5.3193403
2017-06-01	5.3864685
2017-07-01	5.5522055
2017-08-01	5.5388006
2017-09-01	5.4115200
2017-10-01	5.0705624
2017-11-01	5.0799421
2017-12-01	5.6060186
2018-01-01	5.8981237
2018-02-01	5.8742409
2018-03-01	5.7386558
2018-04-01	5.5003796
2018-05-01	5.2028026
2018-06-01	5.3208455
2018-07-01	5.3082570
2018-08-01	5.2270372
2018-09-01	4.7966453