Quarter	Percent, Seasonally Adjusted
1978-01-01	82.6470172583220
1978-04-01	82.6357014225362
1978-07-01	82.4424277413745
1978-10-01	82.4538398431145
1979-01-01	82.3408341059529
1979-04-01	82.5584912832140
1979-07-01	82.5662400933168
1979-10-01	82.3950247222199
1980-01-01	82.1625769026059
1980-04-01	82.1191696911073
1980-07-01	82.2707838359758
1980-10-01	82.3822967181726
1981-01-01	82.5501325727919
1981-04-01	82.3084578659010
1981-07-01	82.1171829426232
1981-10-01	81.8807805981146
1982-01-01	82.0534244521207
1982-04-01	82.1233798425172
1982-07-01	81.8330765032516
1982-10-01	82.0984758266090
1983-01-01	82.2712898066230
1983-04-01	82.2745467975250
1983-07-01	82.0352981691219
1983-10-01	81.8772819917714
1984-01-01	81.8098746660531
1984-04-01	81.6710802901409
1984-07-01	81.5734356610365
1984-10-01	81.4948646704374
1985-01-01	81.2899134880414
1985-04-01	81.0578119079944
1985-07-01	80.9243235318941
1985-10-01	80.9088464038920
1986-01-01	80.7984220090326
1986-04-01	80.7558720025237
1986-07-01	80.8049155893839
1986-10-01	80.5725207650315
1987-01-01	80.4974804303807
1987-04-01	80.4398954230957
1987-07-01	80.5043015188995
1987-10-01	80.2872571105675
1988-01-01	80.2197981791478
1988-04-01	80.2642257080193
1988-07-01	80.2142656287318
1988-10-01	80.0542076223302
1989-01-01	80.0373874203396
1989-04-01	80.2204910623527
1989-07-01	80.1278148655760
1989-10-01	80.1926813405410
1990-01-01	80.1974687223747
1990-04-01	80.3626984001748
1990-07-01	80.3750835283300
1990-10-01	80.6594009806701
1991-01-01	80.7809013443594
1991-04-01	80.8093297664656
1991-07-01	80.8929665561289
1991-10-01	80.9274757904739
1992-01-01	81.2403969493197
1992-04-01	80.9679922705649
1992-07-01	81.0196169009323
1992-10-01	81.2737271969046
1993-01-01	81.1576077153144
1993-04-01	81.1545904018441
1993-07-01	81.1151242723257
1993-10-01	81.3159423633231
1994-01-01	81.0237408400255
1994-04-01	81.0014733088273
1994-07-01	81.0183246397201
1994-10-01	80.7851994750894
1995-01-01	80.7188107041422
1995-04-01	80.6970616226143
1995-07-01	81.0789494817124
1995-10-01	80.9057217539101
1996-01-01	80.8202993202645
1996-04-01	81.0228112014060
1996-07-01	81.2631774263929
1996-10-01	81.1747212567780
1997-01-01	81.3328161452606
1997-04-01	81.3568958148200
1997-07-01	81.0790280502783
1997-10-01	80.8967327406697
1998-01-01	80.8944491247906
1998-04-01	80.9556121200554
1998-07-01	80.7045476968666
1998-10-01	80.6747538727861
1999-01-01	80.7576491969330
1999-04-01	80.6521824337353
1999-07-01	80.5333308596288
1999-10-01	80.4873546303799
2000-01-01	80.3568200212858
2000-04-01	80.2048063749236
2000-07-01	80.1565392000165
2000-10-01	80.4031354721856
2001-01-01	80.0479383387802
2001-04-01	79.8871782482276
2001-07-01	79.6960183367453
2001-10-01	79.5163332607449
2002-01-01	79.3685527558732
2002-04-01	79.0950711964814
2002-07-01	79.2123155229813
2002-10-01	78.9535516351634
2003-01-01	78.9012830612448
2003-04-01	78.9444970084295
2003-07-01	78.6574401806741
2003-10-01	78.6518892663265
2004-01-01	78.4172604292609
2004-04-01	78.3516854169030
2004-07-01	78.3654725463296
2004-10-01	78.3316342139432
2005-01-01	78.3503995886076
2005-04-01	78.2560133664691
2005-07-01	78.4831974031609
2005-10-01	78.6078193253868
2006-01-01	78.5711233746804
2006-04-01	78.5720828427644
2006-07-01	78.6765630119257
2006-10-01	78.6881447184310
2007-01-01	78.8385698768756
2007-04-01	78.9610382371828
2007-07-01	78.8516854219204
2007-10-01	78.8542927091502
2008-01-01	78.8603154927386
2008-04-01	78.8676772799416
2008-07-01	78.7413224050136
2008-10-01	78.7461063360292
2009-01-01	78.5244475230914
2009-04-01	78.3638543137279
2009-07-01	78.2435604354266
2009-10-01	78.0776206731546
2010-01-01	78.2604046459414
2010-04-01	78.1291662140400
2010-07-01	78.1862496690107
2010-10-01	78.1602453150442
2011-01-01	78.1972436837174
2011-04-01	77.9236865355822
2011-07-01	77.7283760226129
2011-10-01	77.8159321358555
2012-01-01	77.7566152544667
2012-04-01	77.6919159105526
2012-07-01	77.6491140543202
2012-10-01	77.6677625865183
2013-01-01	77.7458558215830
2013-04-01	77.7795496224289
2013-07-01	77.8184627225266
2013-10-01	77.8023515263707
2014-01-01	77.8292139482707
2014-04-01	77.8583870884406
2014-07-01	77.8738725333651
2014-10-01	77.8602756072901
2015-01-01	77.9547278848033
2015-04-01	77.9228727927495
2015-07-01	78.0608796948863
2015-10-01	78.1910660875788
2016-01-01	78.3129826336241
2016-04-01	78.4510928193444
2016-07-01	78.5553510597100
2016-10-01	78.6731903504238
2017-01-01	78.6095874052512
2017-04-01	78.6392568813996
2017-07-01	78.7990306495662
2017-10-01	78.9449194298799
2018-01-01	79.1897440508350
2018-04-01	79.4331879246490
2018-07-01	79.5783588359672