Quarter	Percent
1986-01-01	45.2582883577487
1986-04-01	45.5820044680687
1986-07-01	45.5636783378222
1986-10-01	45.0724748830432
1987-01-01	45.1203668322507
1987-04-01	45.2360973377069
1987-07-01	45.6061529089248
1987-10-01	44.6705132098390
1988-01-01	45.3877612844592
1988-04-01	45.7614290039358
1988-07-01	46.1806080774467
1988-10-01	45.9437023620859
1989-01-01	46.7193973634652
1989-04-01	47.3985392666215
1989-07-01	47.4689732982324
1989-10-01	46.4952395232026
1990-01-01	46.4371078577831
1990-04-01	45.8448237310874
1990-07-01	46.2894110648424
1990-10-01	45.5784328247667
1991-01-01	45.3787711145534
1991-04-01	45.5929958799294
1991-07-01	46.0030830213609
1991-10-01	45.8876042733792
1992-01-01	45.7907791070908
1992-04-01	46.0244648318043
1992-07-01	46.6821716694527
1992-10-01	45.4644254455876
1993-01-01	46.3071258392896
1993-04-01	46.4241987756572
1993-07-01	46.1521879715456
1993-10-01	45.4753722794960
1994-01-01	44.9126559714795
1994-04-01	45.5004264998578
1994-07-01	45.3855968244967
1994-10-01	44.0240028238616
1995-01-01	44.6021928591510
1995-04-01	44.4895957402088
1995-07-01	44.2977861582513
1995-10-01	43.3507125477928
1996-01-01	43.2752179327522
1996-04-01	42.7399338113624
1996-07-01	42.2611683848797
1996-10-01	43.0751334336937
1997-01-01	42.7471554132316
1997-04-01	42.9920510904273
1997-07-01	42.9859040390350
1997-10-01	42.9555585573416
1998-01-01	42.9398693690661
1998-04-01	43.2594086021505
1998-07-01	43.2519452642876
1998-10-01	42.6717506187705
1999-01-01	42.6292959626293
1999-04-01	42.9456847717428
1999-07-01	42.9807052561544
1999-10-01	42.3178983680510
2000-01-01	42.5990868788460
2000-04-01	43.3555805193947
2000-07-01	42.6121372031662
2000-10-01	41.7982109971060
2001-01-01	42.2108575924469
2001-04-01	41.9149911585566
2001-07-01	42.1303552769070
2001-10-01	40.7003183265121
2002-01-01	41.0024544632476
2002-04-01	41.1072530864198
2002-07-01	41.2683176553401
2002-10-01	40.6754865793156
2003-01-01	41.0705257836198
2003-04-01	41.3314055820971
2003-07-01	40.5129809196121
2003-10-01	39.8954703832753
2004-01-01	40.3367586975362
2004-04-01	41.3578343713387
2004-07-01	40.3661833374293
2004-10-01	38.8110818910158
2005-01-01	39.5445134575569
2005-04-01	39.8215586307356
2005-07-01	38.8593201887021
2005-10-01	38.6129673108181
2006-01-01	38.2196130114419
2006-04-01	38.6138613861386
2006-07-01	39.0784780023781
2006-10-01	38.9112664376259
2007-01-01	38.0932703659976
2007-04-01	38.3844930183232
2007-07-01	39.0721467630976
2007-10-01	37.7102995486254
2008-01-01	39.0074238615771
2008-04-01	38.3161211272536
2008-07-01	37.9571395294666
2008-10-01	36.8482173963535
2009-01-01	37.9841370925722
2009-04-01	38.2954151749625
2009-07-01	38.3649971214738
2009-10-01	37.8011011699931
2010-01-01	38.1836886323370
2010-04-01	38.5926897416890
2010-07-01	38.6094674556213
2010-10-01	38.0509387940326
2011-01-01	37.6202331107842
2011-04-01	38.0868975648342
2011-07-01	38.3244005641749
2011-10-01	37.6428209602071
2012-01-01	37.4431275627703
2012-04-01	37.6809155166611
2012-07-01	37.7450431275905
2012-10-01	38.6390301134142
2013-01-01	37.5362157343437
2013-04-01	38.0941791293712
2013-07-01	37.6406674427629
2013-10-01	36.7139623474852
2014-01-01	36.4795778132043
2014-04-01	37.6766348997700
2014-07-01	36.9135937159066
2014-10-01	35.3608247422680
2015-01-01	35.7621259587339
2015-04-01	36.6924647963023
2015-07-01	37.4357876712329
2015-10-01	36.6469868624009
2016-01-01	36.0128957243275
2016-04-01	35.7375499054423
2016-07-01	35.9021278820516
2016-10-01	34.2564688766497
2017-01-01	34.3298223874432
2017-04-01	35.8456637895602
2017-07-01	34.5130932896890
2017-10-01	33.8081188320277
2018-01-01	33.8492665655033
2018-04-01	34.3809811624862
2018-07-01	34.2784022480931