Monthly Percent
1981-01-31 18.2381
1981-02-28 17.3013
1981-03-31 15.4602
1981-04-30 16.1188
1981-05-31 19.3191
1981-06-30 18.0398
1981-07-31 18.6847
1981-08-31 18.9469
1981-09-30 17.929
1981-10-31 16.4915
1981-11-30 13.4256
1981-12-31 13.4673
1982-01-31 14.475
1982-02-28 15.9719
1982-03-31 15.0652
1982-04-30 15.3094
1982-05-31 14.7105
1982-06-30 15.5085
1982-07-31 14.4744
1982-08-31 11.7411
1982-09-30 11.8295
1982-10-31 10.5298
1982-11-30 9.8977
1982-12-31 9.625
1983-01-31 9.1313
1983-02-28 9.3063
1983-03-31 9.4266
1983-04-30 9.3322
1983-05-31 9.1406
1983-06-30 9.8892
1983-07-31 10.1637
1983-08-31 10.4403
1983-09-30 9.9972
1983-10-31 9.7262
1983-11-30 9.9517
1983-12-31 10.2625
1984-01-31 9.9584
1984-02-29 10.0893
1984-03-31 10.5853
1984-04-30 11.0166
1984-05-31 11.7144
1984-06-30 11.8036
1984-07-31 12.1082
1984-08-31 11.9205
1984-09-30 11.7657
1984-10-31 10.8642
1984-11-30 9.6279
1984-12-31 9.0428
1985-01-31 8.4915
1985-02-28 9.1689
1985-03-31 9.4375
1985-04-30 8.8094
1985-05-31 8.2262
1985-06-30 7.7156
1985-07-31 8.0082
1985-08-31 8.1518
1985-09-30 8.259
1985-10-31 8.193
1985-11-30 8.134
1985-12-31 8.1032
1986-01-31 8.1279
1986-02-28 8.0188
1986-03-31 7.556
1986-04-30 6.9233
1986-05-31 6.9844
1986-06-30 7.0506
1986-07-31 6.6659
1986-08-31 6.2001
1986-09-30 5.9831
1986-10-31 5.9975
1986-11-30 6.0813
1986-12-31 6.3543
1987-01-31 6.1965
1987-02-28 6.4408
1987-03-31 6.4945
1987-04-30 6.847
1987-05-31 7.4014
1987-06-30 7.233
1987-07-31 6.9947
1987-08-31 7.0438
1987-09-30 7.6338
1987-10-31 8.3894
1987-11-30 7.527
1987-12-31 7.9616
1988-01-31 7.2127
1988-02-29 6.8395
1988-03-31 6.8562
1988-04-30 7.1878
1988-05-31 7.5091
1988-06-30 7.7248
1988-07-31 8.1907
1988-08-31 8.594
1988-09-30 8.4235
1988-10-31 8.6163
1988-11-30 9.0371
1988-12-31 9.4159
1989-01-31 9.408
1989-02-28 9.7597
1989-03-31 10.3069
1989-04-30 10.1533
1989-05-31 9.756
1989-06-30 9.3835
1989-07-31 8.9673
1989-08-31 8.8295
1989-09-30 8.9702
1989-10-31 8.7813
1989-11-30 8.5483
1989-12-31 8.5099
1990-01-31 8.3466
1990-02-28 8.3656
1990-03-31 8.4886
1990-04-30 8.5658
1990-05-31 8.4702
1990-06-30 8.3452
1990-07-31 8.2102
1990-08-31 8.0994
1990-09-30 8.1906
1990-10-31 8.1712
1990-11-30 8.1563
1990-12-31 7.9276
1991-01-31 7.3295
1991-02-28 6.6875
1991-03-31 6.5844
1991-04-30 6.2173
1991-05-31 6.0601
1991-06-30 6.2188
1991-07-31 6.1386
1991-08-31 5.7798
1991-09-30 5.6071
1991-10-31 5.4701
1991-11-30 5.0655
1991-12-31 4.5938
1992-01-31 4.1875
1992-02-29 4.175
1992-03-31 4.3835
1992-04-30 4.1875
1992-05-31 3.9572
1992-06-30 3.9716
1992-07-31 3.4973
1992-08-31 3.45
1992-09-30 3.2841
1992-10-31 3.429
1992-11-30 3.7946
1992-12-31 3.6369
1993-01-31 3.35
1993-02-28 3.2438
1993-03-31 3.2418
1993-04-30 3.225
1993-05-31 3.2434
1993-06-30 3.3352
1993-07-31 3.2926
1993-08-31 3.2738
1993-09-30 3.2131
1993-10-31 3.3869
1993-11-30 3.483
1993-12-31 3.3839
1994-01-31 3.2719
1994-02-28 3.5469
1994-03-31 3.8832
1994-04-30 4.1316
1994-05-31 4.6531
1994-06-30 4.6364
1994-07-31 4.8571
1994-08-31 4.9233
1994-09-30 5.1136
1994-10-31 5.619
1994-11-30 5.8778
1994-12-31 6.375
1995-01-31 6.3483
1995-02-28 6.2813
1995-03-31 6.269
1995-04-30 6.2396
1995-05-31 6.122
1995-06-30 6.0057
1995-07-31 5.9048
1995-08-31 5.8949
1995-09-30 5.8264
1995-10-31 5.9291
1995-11-30 5.8577
1995-12-31 5.7468
1996-01-31 5.5182
1996-02-29 5.2529
1996-03-31 5.4243
1996-04-30 5.493
1996-05-31 5.469
1996-06-30 5.5575
1996-07-31 5.6278
1996-08-31 5.5005
1996-09-30 5.6043
1996-10-31 5.5213
1996-11-30 5.51
1996-12-31 5.5855
1997-01-31 5.5809
1997-02-28 5.495
1997-03-31 5.6168
1997-04-30 5.8041
1997-05-31 5.8075
1997-06-30 5.7681
1997-07-31 5.7139
1997-08-31 5.6905
1997-09-30 5.675
1997-10-31 5.7348
1997-11-30 5.8325
1997-12-31 5.8738
1998-01-31 5.6438
1998-02-28 5.685
1998-03-31 5.6295
1998-04-30 5.648
1998-05-31 5.6632
1998-06-30 5.6695
1998-07-31 5.6422
1998-08-31 5.6345
1998-09-30 5.4714
1998-10-31 5.2618
1998-11-30 5.3105
1998-12-31 5.229
1999-01-31 4.984
1999-02-28 4.9815
1999-03-31 4.99
1999-04-30 4.953
1999-05-31 4.9889
1999-06-30 5.1805
1999-07-31 5.3077
1999-08-31 5.4633
1999-09-30 5.5655
1999-10-31 6.1971
1999-11-30 6.0968
1999-12-31 6.15
2000-01-31 6.037
2000-02-29 6.09
2000-03-31 6.2004
2000-04-30 6.3361
2000-05-31 6.7633
2000-06-30 6.8105
2000-07-31 6.7471
2000-08-31 6.6955
2000-09-30 6.6871
2000-10-31 6.7586
2000-11-30 6.7355
2000-12-31 6.5389
2001-01-31 5.7114
2001-02-28 5.3435
2001-03-31 4.9723
2001-04-30 4.6132
2001-05-31 4.0971
2001-06-30 3.8138
2001-07-31 3.7505
2001-08-31 3.5745
2001-09-30 3.015
2001-10-31 2.4017
2001-11-30 2.1036
2001-12-31 1.9168
2002-01-31 1.8241
2002-02-28 1.9065
2002-03-31 1.998
2002-04-30 1.97
2002-05-31 1.9073
2002-06-30 1.8878
2002-07-31 1.8539
2002-08-31 1.7886
2002-09-30 1.8124
2002-10-31 1.7935
2002-11-30 1.4795
2002-12-31 1.423
2003-01-31 1.3614
2003-02-28 1.338
2003-03-31 1.2862
2003-04-30 1.304
2003-05-31 1.2865
2003-06-30 1.1076
2003-07-31 1.1161
2003-08-31 1.136
2003-09-30 1.1441
2003-10-31 1.1635
2003-11-30 1.168
2003-12-31 1.1667
2004-01-31 1.1229
2004-02-29 1.112
2004-03-31 1.1052
2004-04-30 1.14
2004-05-31 1.25
2004-06-30 1.5023
2004-07-31 1.6268
2004-08-31 1.7395
2004-09-30 1.9309
2004-10-31 2.0952
2004-11-30 2.3209
2004-12-31 2.5086
2005-01-31 2.6675
2005-02-28 2.8345
2005-03-31 3.0255
2005-04-30 3.1519
2005-05-31 3.2725
2005-06-30 3.4389
2005-07-31 3.6076
2005-08-31 3.8182
2005-09-30 3.9205
2005-10-31 4.181
2005-11-30 4.3614
2005-12-31 4.502
2006-01-31 4.611
2006-02-28 4.7755
2006-03-31 4.937
2006-04-30 5.0756
2006-05-31 5.1924
2006-06-30 5.385
2006-07-31 5.5
2006-08-31 5.4114
2006-09-30 5.3757
2006-10-31 5.3764
2006-11-30 5.3773
2006-12-31 5.3579
2007-01-31 5.3586
2007-02-28 5.3705
2007-03-31 5.3505
2007-04-30 5.3563
2007-05-31 5.3557
2007-06-30 5.3629
2007-07-31 5.3682
2007-08-31 5.5055
2007-09-30 5.575
2007-10-31 5.1748
2007-11-30 5.0227
2007-12-31 5.0668
2008-01-31 3.9309
2008-02-29 3.1148
2008-03-31 2.8605
2008-04-30 3.0645
2008-05-31 2.914
2008-06-30 2.9876
2008-07-31 3.0513
2008-08-31 3.046
2008-09-30 3.7968
2008-10-31 4.9796
2008-11-30 3.4925
2008-12-31 2.4971
2009-01-31 1.6062
2009-02-28 1.7335
2009-03-31 1.7123
2009-04-30 1.4555
2009-05-31 1.0889
2009-06-30 1.0409
2009-07-31 0.86
2009-08-31 0.881
2009-09-30 0.6864
2009-10-31 0.6145
2009-11-30 0.529
2009-12-31 0.4476
2010-01-31 0.4595
2010-02-28 0.474
2010-03-31 0.5491
2010-04-30 0.5845
2010-05-31 0.7774
2010-06-30 0.9164
2010-07-31 0.9159
2010-08-31 0.6357
2010-09-30 0.5459
2010-10-31 0.5543
2010-11-30 0.5668
2010-12-31 0.4552
2011-01-31 0.5295
2011-02-28 0.4945
2011-03-31 0.4896
2011-04-30 0.5328
2011-05-31 0.4005
2011-06-30 0.4432
2011-07-31 0.53
2011-08-31 0.4691
2011-09-30 0.4659
2011-10-31 0.4981
2011-11-30 0.5141
2011-12-31 0.629
2012-01-31 0.5333
2012-02-29 0.4662
2012-03-31 0.4641
2012-04-30 0.5216
2012-05-31 0.5564
2012-06-30 0.5405
2012-07-31 0.5818
2012-08-31 0.5236
2012-09-30 0.4985
2012-10-31 0.4161
2012-11-30 0.4323
2012-12-31 0.4411
2013-01-31 0.455
2013-02-28 0.4825
2013-03-31 0.461
2013-04-30 0.4619
2013-05-31 0.4414
2013-06-30 0.394
2013-07-31 0.3717
2013-08-31 0.3595
2013-09-30 0.3395
2013-10-31 0.313
2013-11-30 0.2829
2013-12-31 0.301
2014-01-31 0.2859
2014-02-28 0.302
2014-03-31 0.2914
2014-04-30 0.277
2014-05-31 0.302
2014-06-30 0.3381
2014-07-31 0.333
2014-08-31 0.3865
2014-09-30 0.38
2014-10-31 0.3187
2014-11-30 0.3585
2014-12-31 0.4367
2015-01-31 0.4667
2015-02-28 0.43
2015-03-31 0.4414
2015-04-30 0.466
2015-05-31 0.3732
2015-06-30 0.4277
2015-07-31 0.46
2015-08-31 0.512
2015-09-30 0.5464
2015-10-31 0.5882
2015-11-30 0.7919
2015-12-31 0.8014
2016-01-31 0.8105
2016-02-29 0.8152
2016-03-31 0.8167
2016-04-30 0.8486
2016-05-31 0.8465
2016-06-30 0.9014
2016-07-31 1.0829
2016-08-31 0.9136
2016-09-30 0.9495
2016-10-31 0.9614
2016-11-30 0.9905
2016-12-31 1.021
2017-01-31 1.0819
2017-02-28 1.0995
2017-03-31 1.1996
2017-04-30 1.2294
2017-05-31 1.2352
2017-06-30 1.2991
2017-07-31 1.3562
2017-08-31 1.4441
2017-09-30 1.4571
2017-10-31 1.4968
2017-11-30 1.5868
2017-12-31 1.7511
2018-01-31 1.9286
2018-02-28 2.034
2018-03-31 2.3395
2018-04-30 2.5005
2018-05-31 2.4705
2018-06-30 2.4857
2018-07-31 2.4909
2018-08-31 2.4891
2018-09-30 2.5045
2018-10-31 2.603
2018-11-30 2.7864
2018-12-31 2.935
2019-01-31 2.9027
2019-02-28 2.7865
2019-03-31 2.7195
2019-04-30 2.7
2019-05-31 2.6348
2019-06-30 2.493
2019-07-31 2.4
2019-08-31 2.2576
2019-09-30 2.2314
2019-10-31 2.0683
2019-11-30 2.0071
2019-12-31 2
2020-01-31 1.9082
2020-02-29 1.7535