Quarter	Percent
1986-01-01	2.72541819665443
1986-04-01	2.75192229866451
1986-07-01	2.81098546042003
1986-10-01	2.75577824470664
1987-01-01	2.80096308186196
1987-04-01	2.72931006883304
1987-07-01	2.95942720763723
1987-10-01	2.70484651384152
1988-01-01	3.36657359393698
1988-04-01	3.70281892021022
1988-07-01	4.69836196564123
1988-10-01	4.31568907963758
1989-01-01	5.15711201727033
1989-04-01	5.48712206047032
1989-07-01	5.21099744245524
1989-10-01	5.14577027242313
1990-01-01	5.58283180234400
1990-04-01	5.71069971760276
1990-07-01	5.99952944867069
1990-10-01	6.61394122664186
1991-01-01	7.74740084713130
1991-04-01	7.94585500152952
1991-07-01	8.25357935839522
1991-10-01	8.22421318630829
1992-01-01	8.57294590698733
1992-04-01	8.13357455148500
1992-07-01	8.21461048802668
1992-10-01	8.23697251839616
1993-01-01	8.00779785558971
1993-04-01	7.74078742492771
1993-07-01	7.59549896357714
1993-10-01	7.18567251461988
1994-01-01	7.46279491833031
1994-04-01	6.38864880437914
1994-07-01	6.30267233306922
1994-10-01	5.83038869257950
1995-01-01	5.57434813248767
1995-04-01	4.99964988446187
1995-07-01	4.67595818815331
1995-10-01	4.62586907138432
1996-01-01	5.03836490799212
1996-04-01	4.82753983728905
1996-07-01	4.88000000000000
1996-10-01	4.63725750730800
1997-01-01	5.50112538064345
1997-04-01	5.20421607378129
1997-07-01	5.22721302863147
1997-10-01	5.07217847769029
1998-01-01	5.86123621173553
1998-04-01	6.30219206680584
1998-07-01	6.05448383733055
1998-10-01	6.11286275014478
1999-01-01	6.16013802798901
1999-04-01	5.69494988188725
1999-07-01	5.39485472929732
1999-10-01	4.86229819563153
2000-01-01	5.06112624311142
2000-04-01	4.80695961391923
2000-07-01	4.60786157607674
2000-10-01	3.96607632826141
2001-01-01	4.24034869240349
2001-04-01	4.07425865935709
2001-07-01	4.03840198203778
2001-10-01	3.94448502556611
2002-01-01	4.34993042531309
2002-04-01	3.90497491386085
2002-07-01	3.97693139492971
2002-10-01	3.49988075363701
2003-01-01	3.91234442922646
2003-04-01	3.65708857753503
2003-07-01	3.37817989542330
2003-10-01	3.26694619147449
2004-01-01	3.61990950226244
2004-04-01	2.73347202958853
2004-07-01	2.63052781740371
2004-10-01	2.41953634931353
2005-01-01	2.86434977578475
2005-04-01	2.54798518352228
2005-07-01	2.47480899125235
2005-10-01	2.49559277214632
2006-01-01	3.10647639956092
2006-04-01	2.40056740684162
2006-07-01	2.51119117807621
2006-10-01	2.26022547791515
2007-01-01	2.60335255753786
2007-04-01	2.31409395973154
2007-07-01	2.11491772322633
2007-10-01	2.10986200650008
2008-01-01	2.71140939597315
2008-04-01	2.44070674377885
2008-07-01	2.64729194187583
2008-10-01	2.73058884835852
2009-01-01	3.65078531281189
2009-04-01	3.65490196078431
2009-07-01	4.10283315844701
2009-10-01	4.15433348912084
2010-01-01	4.35933364471431
2010-04-01	4.34422838229210
2010-07-01	4.11206273862347
2010-10-01	4.10578308293888
2011-01-01	4.26107368850786
2011-04-01	4.01305389832237
2011-07-01	4.21695951107716
2011-10-01	4.02205807953051
2012-01-01	4.62182753923003
2012-04-01	4.44478232223405
2012-07-01	4.86308316430020
2012-10-01	4.12302661830072
2013-01-01	4.33336692532500
2013-04-01	4.21571586678740
2013-07-01	4.06548566878981
2013-10-01	3.73919486292912
2014-01-01	4.08213150818871
2014-04-01	3.60351514556434
2014-07-01	3.79863813229572
2014-10-01	3.66129420254992
2015-01-01	4.02713419003487
2015-04-01	3.86676875957121
2015-07-01	3.85170919595571
2015-10-01	3.33507778676436
2016-01-01	3.79158052997557
2016-04-01	3.53454211613496
2016-07-01	3.39925271120022
2016-10-01	3.50372832629593
2017-01-01	3.62035225048924
2017-04-01	3.22480206387332
2017-07-01	3.08076602830974
2017-10-01	2.89148232015328
2018-01-01	3.15962603878116
2018-04-01	3.08354866494401
2018-07-01	2.85457502353848