Month	Percent
1978-01-31	6.1548
1978-02-28	6.7603
1978-03-31	6.6882
1978-04-30	7.5859
1978-05-31	9.122
1978-06-30	9.9048
1978-07-31	10.0193
1978-08-31	9.3324
1978-09-30	9.2947
1978-10-31	10.4851
1978-11-30	12.0071
1978-12-31	12.3142
1979-01-31	12.6094
1979-02-28	13.1486
1979-03-31	11.8942
1979-04-30	11.5757
1979-05-31	11.7254
1979-06-30	13.1815
1979-07-31	13.9172
1979-08-31	14.0706
1979-09-30	14.1391
1979-10-31	14.178
1979-11-30	16.2528
1979-12-31	16.7368
1980-01-31	17.0916
1980-02-29	17.744
1980-03-31	17.9933
1980-04-30	17.4625
1980-05-31	17.0074
1980-06-30	16.7229
1980-07-31	15.7615
1980-08-31	16.3781
1980-09-30	15.7876
1980-10-31	15.8682
1980-11-30	15.5852
1980-12-31	14.628
1981-01-31	14.1071
1981-02-28	12.9516
1981-03-31	12.4837
1981-04-30	12.2367
1981-05-31	12.3026
1981-06-30	12.5519
1981-07-31	13.7628
1981-08-31	14.0609
1981-09-30	14.832
1981-10-31	16.1676
1981-11-30	14.8899
1981-12-31	15.3296
1982-01-31	14.9531
1982-02-28	14.3281
1982-03-31	13.4341
1982-04-30	13.6492
1982-05-31	13.2352
1982-06-30	12.8786
1982-07-31	12.1797
1982-08-31	10.9055
1982-09-30	10.6129
1982-10-31	9.5856
1982-11-30	9.3253
1982-12-31	10.5015
1983-01-31	11.1524
1983-02-28	11.175
1983-03-31	10.8336
1983-04-30	10.1489
1983-05-31	10.1734
1983-06-30	9.8274
1983-07-31	9.8296
1983-08-31	9.7734
1983-09-30	9.5575
1983-10-31	9.2694
1983-11-30	9.2003
1983-12-31	9.3391
1984-01-31	9.3535
1984-02-29	9.3058
1984-03-31	8.841
1984-04-30	8.8529
1984-05-31	9.326
1984-06-30	9.3073
1984-07-31	11.4887
1984-08-31	10.7862
1984-09-30	10.7086
1984-10-31	10.5157
1984-11-30	9.7565
1984-12-31	9.6999
1985-01-31	11.7174
1985-02-28	13.6111
1985-03-31	13.4258
1985-04-30	12.4969
1985-05-31	12.4338
1985-06-30	12.343
1985-07-31	11.8221
1985-08-31	11.2909
1985-09-30	11.4115
1985-10-31	11.4229
1985-11-30	11.4533
1985-12-31	11.6602
1986-01-31	12.6941
1986-02-28	12.5545
1986-03-31	11.6658
1986-04-30	10.3618
1986-05-31	10.079
1986-06-30	9.6624
1986-07-31	9.8617
1986-08-31	9.7555
1986-09-30	9.9805
1986-10-31	10.9617
1986-11-30	11.0805
1986-12-31	11.2338
1987-01-31	10.95
1987-02-28	10.6985
1987-03-31	9.8273
1987-04-30	9.6645
1987-05-31	8.6979
1987-06-30	8.7677
1987-07-31	9.1087
1987-08-31	9.918
1987-09-30	10.0586
1987-10-31	9.8491
1987-11-30	8.805
1987-12-31	8.6217
1988-01-31	8.8233
1988-02-29	9.1012
1988-03-31	8.7676
1988-04-30	8.1647
1988-05-31	7.882
1988-06-30	8.7777
1988-07-31	10.3543
1988-08-31	11.1348
1988-09-30	11.9886
1988-10-31	11.8971
1988-11-30	12.1723
1988-12-31	13.0438
1989-01-31	13.0457
1989-02-28	12.956
1989-03-31	12.955
1989-04-30	13.029
1989-05-31	13.0279
1989-06-30	14.0411
1989-07-31	13.8455
1989-08-31	13.8018
1989-09-30	13.9755
1989-10-31	14.9368
1989-11-30	15.0441
1989-12-31	15.08
1990-01-31	15.1025
1990-02-28	15.0533
1990-03-31	15.2007
1990-04-30	15.1474
1990-05-31	15.0852
1990-06-30	14.9024
1990-07-31	14.9009
1990-08-31	14.9366
1990-09-30	14.8665
1990-10-31	13.9674
1990-11-30	13.5341
1990-12-31	13.6824
1991-01-31	13.8566
1991-02-28	13.1808
1991-03-31	12.3255
1991-04-30	11.8614
1991-05-31	11.4364
1991-06-30	11.1295
1991-07-31	10.9893
1991-08-31	10.7881
1991-09-30	10.2088
1991-10-31	10.2983
1991-11-30	10.3738
1991-12-31	10.666
1992-01-31	10.5311
1992-02-29	10.2655
1992-03-31	10.5145
1992-04-30	10.5013
1992-05-31	9.9524
1992-06-30	9.8918
1992-07-31	10.0435
1992-08-31	10.2145
1992-09-30	9.8289
1992-10-31	8.1734
1992-11-30	7.0429
1992-12-31	7.0243
1993-01-31	6.8163
1993-02-28	6
1993-03-31	5.8689
1993-04-30	5.844
1993-05-31	5.8566
1993-06-30	5.765
1993-07-31	5.8059
1993-08-31	5.7057
1993-09-30	5.7932
1993-10-31	5.6493
1993-11-30	5.463
1993-12-31	5.2329
1994-01-31	5.2865
1994-02-28	5.1358
1994-03-31	5.0867
1994-04-30	5.1242
1994-05-31	5.095
1994-06-30	5.0634
1994-07-31	5.1053
1994-08-31	5.4466
1994-09-30	5.5777
1994-10-31	5.8148
1994-11-30	5.9679
1994-12-31	6.248
1995-01-31	6.4798
1995-02-28	6.6701
1995-03-31	6.5861
1995-04-30	6.6197
1995-05-31	6.659
1995-06-30	6.5557
1995-07-31	6.72
1995-08-31	6.7336
1995-09-30	6.6645
1995-10-31	6.6791
1995-11-30	6.5807
1995-12-31	6.4371
1996-01-31	6.3132
1996-02-29	6.1131
1996-03-31	6.0126
1996-04-30	5.9603
1996-05-31	5.9843
1996-06-30	5.7933
1996-07-31	5.6913
1996-08-31	5.7121
1996-09-30	5.739
1996-10-31	5.8896
1996-11-30	6.2476
1996-12-31	6.2898
1997-01-31	6.2707
1997-02-28	6.1435
1997-03-31	6.1503
1997-04-30	6.3314
1997-05-31	6.3903
1997-06-30	6.6219
1997-07-31	6.917
1997-08-31	7.116
1997-09-30	7.1744
1997-10-31	7.2238
1997-11-30	7.496
1997-12-31	7.5681
1998-01-31	7.436
1998-02-28	7.421
1998-03-31	7.43
1998-04-30	7.3951
1998-05-31	7.3728
1998-06-30	7.5924
1998-07-31	7.6614
1998-08-31	7.6098
1998-09-30	7.3368
1998-10-31	7.09
1998-11-30	6.8198
1998-12-31	6.3186
1999-01-31	5.741
1999-02-28	5.379
1999-03-31	5.2643
1999-04-30	5.1893
1999-05-31	5.2176
1999-06-30	5.093
1999-07-31	5.0289
1999-08-31	5.1352
1999-09-30	5.2809
1999-10-31	5.8576
1999-11-30	5.7193
1999-12-31	5.8916
2000-01-31	6.0152
2000-02-29	6.0991
2000-03-31	6.0878
2000-04-30	6.1728
2000-05-31	6.187
2000-06-30	6.0958
2000-07-31	6.0826
2000-08-31	6.0913
2000-09-30	6.0811
2000-10-31	6.0485
2000-11-30	5.9794
2000-12-31	5.8512
2001-01-31	5.7338
2001-02-28	5.661
2001-03-31	5.4443
2001-04-30	5.3037
2001-05-31	5.1479
2001-06-30	5.1621
2001-07-31	5.1673
2001-08-31	4.8991
2001-09-30	4.6223
2001-10-31	4.3304
2001-11-30	3.9084
2001-12-31	3.9568
2002-01-31	3.957
2002-02-28	3.9618
2002-03-31	4.0413
2002-04-30	4.0802
2002-05-31	4.0627
2002-06-30	4.0889
2002-07-31	3.9704
2002-08-31	3.9005
2002-09-30	3.9057
2002-10-31	3.8802
2002-11-30	3.8876
2002-12-31	3.929
2003-01-31	3.9036
2003-02-28	3.675
2003-03-31	3.5729
2003-04-30	3.567
2003-05-31	3.556
2003-06-30	3.5602
2003-07-31	3.4089
2003-08-31	3.4413
2003-09-30	3.6216
2003-10-31	3.7204
2003-11-30	3.9038
2003-12-31	3.9419
2004-01-31	3.9771
2004-02-29	4.0908
2004-03-31	4.2235
2004-04-30	4.321
2004-05-31	4.4505
2004-06-30	4.7211
2004-07-31	4.7859
2004-08-31	4.8864
2004-09-30	4.868
2004-10-31	4.8319
2004-11-30	4.8098
2004-12-31	4.7967
2005-01-31	4.801
2005-02-28	4.8183
2005-03-31	4.9069
2005-04-30	4.8645
2005-05-31	4.821
2005-06-30	4.782
2005-07-31	4.5967
2005-08-31	4.5336
2005-09-30	4.5377
2005-10-31	4.5202
2005-11-30	4.5627
2005-12-31	4.5845
2006-01-31	4.5398
2006-02-28	4.519
2006-03-31	4.5257
2006-04-30	4.5719
2006-05-31	4.6467
2006-06-30	4.692
2006-07-31	4.681
2006-08-31	4.8945
2006-09-30	4.9807
2006-10-31	5.0886
2006-11-30	5.1782
2006-12-31	5.2429
2007-01-31	5.4491
2007-02-28	5.5143
2007-03-31	5.5177
2007-04-30	5.6939
2007-05-31	5.835
2007-06-30	5.9379
2007-07-31	6.1118
2007-08-31	6.3464
2007-09-30	6.537
2007-10-31	6.2052
2007-11-30	6.3445
2007-12-31	6.3489
2008-01-31	5.6059
2008-02-29	5.6
2008-03-31	5.8482
2008-04-30	5.8882
2008-05-31	5.787
2008-06-30	5.8924
2008-07-31	5.7996
2008-08-31	5.7535
2008-09-30	5.8573
2008-10-31	6.1598
2008-11-30	4.4
2008-12-31	3.2107
2009-01-31	2.2869
2009-02-28	2.0625
2009-03-31	1.7864
2009-04-30	1.425
2009-05-31	1.2697
2009-06-30	1.1386
2009-07-31	0.9185
2009-08-31	0.69
2009-09-30	0.5136
2009-10-31	0.5023
2009-11-30	0.575
2009-12-31	0.575
2010-01-31	0.575
2010-02-28	0.575
2010-03-31	0.6011
2010-04-30	0.625
2010-05-31	0.6776
2010-06-30	0.7682
2010-07-31	0.775
2010-08-31	0.7655
2010-09-30	0.725
2010-10-31	0.725
2010-11-30	0.725
2010-12-31	0.7655
2011-01-31	0.825
2011-02-28	0.825
2011-03-31	0.8315
2011-04-30	0.875
2011-05-31	0.875
2011-06-30	0.875
2011-07-31	0.875
2011-08-31	0.9114
2011-09-30	1.0077
2011-10-31	1.0593
2011-11-30	1.0968
2011-12-31	1.15
2012-01-31	1.175
2012-02-29	1.156
2012-03-31	1.1164
2012-04-30	1.0992
2012-05-31	1.0891
2012-06-30	1.0376
2012-07-31	0.8691
2012-08-31	0.7405
2012-09-30	0.6825
2012-10-31	0.575
2012-11-30	0.575
2012-12-31	0.575
2013-01-31	0.575
2013-02-28	0.575
2013-03-31	0.5655
2013-04-30	0.5731
2013-05-31	0.5512
2013-06-30	0.525
2013-07-31	0.525
2013-08-31	0.525
2013-09-30	0.525
2013-10-31	0.525
2013-11-30	0.5512
2013-12-31	0.575
2014-01-31	0.575
2014-02-28	0.575
2014-03-31	0.575
2014-04-30	0.575
2014-05-31	0.575
2014-06-30	0.575
2014-07-31	0.575
2014-08-31	0.575
2014-09-30	0.567
2014-10-31	0.5511
2014-11-30	0.5538
2014-12-31	0.5524
2015-01-31	0.5512
2015-02-28	0.55
2015-03-31	0.5511
2015-04-30	0.55
2015-05-31	0.5532
2015-06-30	0.55
2015-07-31	0.55
2015-08-31	0.55
2015-09-30	0.55
2015-10-31	0.55
2015-11-30	0.55
2015-12-31	0.5786
2016-01-31	0.6475
2016-02-29	0.65
2016-03-31	0.6476
2016-04-30	0.65
2016-05-31	0.65
2016-06-30	0.6386
2016-07-31	0.4869
2016-08-31	0.367
2016-09-30	0.3509
2016-10-31	0.3524
2016-11-30	0.3523
2016-12-31	0.35
2017-01-31	0.35
2017-02-28	0.35
2017-03-31	0.3478
2017-04-30	0.35
2017-05-31	0.35
2017-06-30	0.35
2017-07-31	0.3324
2017-08-31	0.2977
2017-09-30	0.3
2017-10-31	0.3
2017-11-30	0.4818
2017-12-31	0.5
2018-01-31	0.5
2018-02-28	0.5
2018-03-31	0.5714
2018-04-30	0.7
2018-05-31	0.6929
2018-06-30	0.65