Quarter	Percent, Seasonally Adjusted
1986-01-01	64.4617362645884
1986-04-01	65.4170436897086
1986-07-01	66.0501347342286
1986-10-01	65.8297715301374
1987-01-01	66.0853476559399
1987-04-01	66.6396337076874
1987-07-01	66.2151187906383
1987-10-01	66.9825457319282
1988-01-01	67.2542075840979
1988-04-01	68.5010121458109
1988-07-01	69.2793943439439
1988-10-01	69.6701893218992
1989-01-01	70.4098411370204
1989-04-01	70.5798769573254
1989-07-01	70.9477252878642
1989-10-01	70.8538415068314
1990-01-01	71.0039594437051
1990-04-01	70.2203288454434
1990-07-01	70.0853267528398
1990-10-01	69.8814259578747
1991-01-01	70.3874825999426
1991-04-01	69.9359156716280
1991-07-01	70.0781564368724
1991-10-01	70.5705860768900
1992-01-01	70.8420129715734
1992-04-01	71.2210695637863
1992-07-01	71.3641147992747
1992-10-01	71.8114407146058
1993-01-01	72.5073291326446
1993-04-01	72.9519404394351
1993-07-01	73.5273411912000
1993-10-01	73.2369809715423
1994-01-01	73.4748498829984
1994-04-01	72.2886315561709
1994-07-01	71.7488890112279
1994-10-01	71.8430564652055
1995-01-01	72.2488253341826
1995-04-01	71.6996764481826
1995-07-01	71.8789169161568
1995-10-01	71.5630879880893
1996-01-01	71.3046737056314
1996-04-01	71.5139890403735
1996-07-01	70.6250746645112
1996-10-01	71.3772362781355
1997-01-01	70.9285501295150
1997-04-01	70.4693597125725
1997-07-01	70.6869554298279
1997-10-01	70.6398930597537
1998-01-01	70.8650345005413
1998-04-01	70.7855143045741
1998-07-01	70.6675905007295
1998-10-01	69.2830772587001
1999-01-01	67.9657036420328
1999-04-01	66.9454094197578
1999-07-01	66.7264727386353
1999-10-01	67.7128194029893
2000-01-01	67.6610815547961
2000-04-01	67.3675862596969
2000-07-01	66.3774478268800
2000-10-01	66.5905924703642
2001-01-01	65.7195580143747
2001-04-01	66.2648391267107
2001-07-01	66.4652326205736
2001-10-01	66.6762552151134
2002-01-01	65.8832894298857
2002-04-01	66.0097170609081
2002-07-01	65.7106207757526
2002-10-01	66.2401408948899
2003-01-01	66.1998575801454
2003-04-01	66.6195130926163
2003-07-01	66.0745375577047
2003-10-01	66.2207018088004
2004-01-01	65.6157913164592
2004-04-01	65.2699433351034
2004-07-01	65.4303370174202
2004-10-01	66.5360339805304
2005-01-01	66.2180467460074
2005-04-01	66.1566125765572
2005-07-01	66.4640039818495
2005-10-01	66.2982856657303
2006-01-01	66.8577046311431
2006-04-01	66.3820296988250
2006-07-01	66.8138895247540
2006-10-01	66.9233789079580
2007-01-01	67.1447997288432
2007-04-01	67.0244457736940
2007-07-01	66.6076423811197
2007-10-01	66.7133509225751
2008-01-01	67.1602263954320
2008-04-01	66.9253260924901
2008-07-01	67.1630700289558
2008-10-01	66.3814628321227
2009-01-01	65.1179920608863
2009-04-01	64.3320509170483
2009-07-01	64.5680629560816
2009-10-01	64.1185631931928
2010-01-01	65.3745214424940
2010-04-01	66.7786211962926
2010-07-01	67.8066054459601
2010-10-01	67.6621946760532
2011-01-01	68.1920173233416
2011-04-01	68.6239805493730
2011-07-01	68.5060083229248
2011-10-01	67.8013345154711
2012-01-01	68.2707173067699
2012-04-01	68.0694569932911
2012-07-01	67.9558077198990
2012-10-01	67.7808637943863
2013-01-01	67.8179811985591
2013-04-01	68.0719207732691
2013-07-01	68.1424873792158
2013-10-01	68.0152277029146
2014-01-01	67.4256753942464
2014-04-01	67.3411614196341
2014-07-01	66.7951174431100
2014-10-01	67.4517103510928
2015-01-01	67.5327220103350
2015-04-01	67.4052705852596
2015-07-01	67.5113055720628
2015-10-01	66.9382966573283
2016-01-01	67.1954773305773
2016-04-01	66.7752283798335
2016-07-01	67.0303243923633
2016-10-01	66.6525210850626
2017-01-01	66.8069040734997
2017-04-01	66.8218551143717
2017-07-01	66.7079918770712
2017-10-01	66.5858788326706
2018-01-01	66.1050942459448
2018-04-01	66.5540832032788
2018-07-01	65.8674409232113