Quarter	Percent, Seasonally Adjusted
1960-01-01	18.9781021897810
1960-04-01	19.6211096075778
1960-07-01	18.4041184041184
1960-10-01	18.2397959183673
1961-01-01	18.5463659147870
1961-04-01	20.3730272596844
1961-07-01	20.3525641025641
1961-10-01	21.2025316455696
1962-01-01	20.6794682422452
1962-04-01	19.2737430167598
1962-07-01	18.2781456953642
1962-10-01	17.9974651457541
1963-01-01	19.2452830188679
1963-04-01	19.1304347826087
1963-07-01	19.3003618817853
1963-10-01	19.6821515892421
1964-01-01	19.8146002317497
1964-04-01	19.2468619246862
1964-07-01	19.3717277486911
1964-10-01	19.0382728164868
1965-01-01	19.4681861348528
1965-04-01	19.1352345906164
1965-07-01	18.6678352322524
1965-10-01	19.4419441944194
1966-01-01	19.8451113262343
1966-04-01	21.7264791464598
1966-07-01	20.3947368421053
1966-10-01	21.3883677298311
1967-01-01	20.1359388275276
1967-04-01	21.0169491525424
1967-07-01	20.8474576271186
1967-10-01	21.5210355987055
1968-01-01	21.3808463251670
1968-04-01	19.9692780337942
1968-07-01	21.0172026925954
1968-10-01	20.9495101733233
1969-01-01	23.1121281464531
1969-04-01	21.0144927536232
1969-07-01	21.7696629213483
1969-10-01	21.3081591368847
1970-01-01	21.7334208798424
1970-04-01	22.7155727155727
1970-07-01	21.8610579987253
1970-10-01	21.8631178707224
1971-01-01	21.6199376947040
1971-04-01	22.1889952153110
1971-07-01	21.8214074512123
1971-10-01	22.3329425556858
1972-01-01	23.3394271785497
1972-04-01	23.8881829733164
1972-07-01	23.3815210559397
1972-10-01	23.8177623990773
1973-01-01	23.2731137088204
1973-04-01	23.1142241379310
1973-07-01	22.3779603673272
1973-10-01	22.9222520107239
1974-01-01	21.9017926734217
1974-04-01	21.6013628620102
1974-07-01	21.6320000000000
1974-10-01	21.2668298653611
1975-01-01	23.3502538071066
1975-04-01	22.8891820580475
1975-07-01	23.0744748567791
1975-10-01	22.5577264653641
1976-01-01	24.0045832139788
1976-04-01	22.4348308374931
1976-07-01	22.1824686940966
1976-10-01	22.2277473893585
1977-01-01	21.0312992569241
1977-04-01	21.1167737646798
1977-07-01	21.3054717794054
1977-10-01	23.0715123094959
1978-01-01	21.4008620689655
1978-04-01	22.5097555966318
1978-07-01	21.9550342130987
1978-10-01	21.2852145092985
1979-01-01	22.4471021159154
1979-04-01	20.8498877180860
1979-07-01	20.5253409664927
1979-10-01	20.5224464257782
1980-01-01	21.2659380692168
1980-04-01	20.4562287068582
1980-07-01	19.2524872277494
1980-10-01	19.9946106170843
1981-01-01	20.7795810792065
1981-04-01	19.4653196993963
1981-07-01	20.1583511373633
1981-10-01	20.6481146849777
1982-01-01	19.4254897644728
1982-04-01	19.7831978319783
1982-07-01	21.6066481994460
1982-10-01	21.6133075082602
1983-01-01	22.5396455223881
1983-04-01	21.1815891916648
1983-07-01	20.6863062479767
1983-10-01	20.8805164567679
1984-01-01	20.8117359413203
1984-04-01	21.5459120691292
1984-07-01	20.2389968863082
1984-10-01	20.7123790457124
1985-01-01	21.3387423935091
1985-04-01	20.2527988443481
1985-07-01	18.9886697440201
1985-10-01	18.7265406401420
1986-01-01	18.7858117326057
1986-04-01	20.0027966160945
1986-07-01	18.9280958721704
1986-10-01	19.0386611312922
1987-01-01	19.0709205976382
1987-04-01	18.5875524024508
1987-07-01	19.9700262270513
1987-10-01	19.6318310346818
1988-01-01	19.0971058218795
1988-04-01	18.9489267209474
1988-07-01	18.3439628148308
1988-10-01	18.2275425007545
1989-01-01	19.0723615215940
1989-04-01	18.4210526315790
1989-07-01	18.4616700158194
1989-10-01	18.9011464417045
1990-01-01	18.5937951832115
1990-04-01	19.8343848580442
1990-07-01	19.3593991605920
1990-10-01	18.4485581161063
1991-01-01	19.0768964322826
1991-04-01	19.0610411345019
1991-07-01	19.2485574593666
1991-10-01	19.6665637542451
1992-01-01	19.5060219933671
1992-04-01	19.6230410842863
1992-07-01	18.8949926886140
1992-10-01	19.1933727442439
1993-01-01	18.9779016367704
1993-04-01	19.0201063092212
1993-07-01	19.5284450531147
1993-10-01	19.6113855910331
1994-01-01	19.9592894152480
1994-04-01	18.9276954433966
1994-07-01	18.2416287519230
1994-10-01	17.7079328463412
1995-01-01	18.1692435373313
1995-04-01	18.6248859142075
1995-07-01	18.1095273818455
1995-10-01	18.0797187797903
1996-01-01	18.0980875278658
1996-04-01	18.8241805547014
1996-07-01	18.2322561605430
1996-10-01	18.6142376845490
1997-01-01	18.4947541836469
1997-04-01	18.3238359972203
1997-07-01	18.1428455876405
1997-10-01	17.9538257227500
1998-01-01	18.3371183446884
1998-04-01	18.3176645225136
1998-07-01	18.4151838671412
1998-10-01	19.1835436845710
1999-01-01	18.3059578190300
1999-04-01	18.4996358339403
1999-07-01	18.0298047995522
1999-10-01	17.4033522573669
2000-01-01	17.2235344642474
2000-04-01	17.7563059397884
2000-07-01	17.4235384428912
2000-10-01	17.6378014714561
2001-01-01	17.9874722166094
2001-04-01	17.5145839120600
2001-07-01	18.0722155469116
2001-10-01	16.8446817979528
2002-01-01	16.9741257769217
2002-04-01	17.1225287222255
2002-07-01	16.8167196452024
2002-10-01	16.2877967814101
2003-01-01	16.1830093827698
2003-04-01	15.5869376673329
2003-07-01	17.0131103933118
2003-10-01	17.4105145413870
2004-01-01	17.3789897962889
2004-04-01	16.9443549890676
2004-07-01	16.3039151686914
2004-10-01	16.0575056242103
2005-01-01	16.6392756364538
2005-04-01	16.1306247008138
2005-07-01	15.8753993139896
2005-10-01	15.3564388272960
2006-01-01	15.5361884659903
2006-04-01	14.7502859321388
2006-07-01	15.0819052419355
2006-10-01	15.0785657950616
2007-01-01	15.0794398022832
2007-04-01	15.4041073012290
2007-07-01	15.7200730796727
2007-10-01	15.6893255679545
2008-01-01	15.7129881925522
2008-04-01	15.7255744951406
2008-07-01	15.6772139974417
2008-10-01	15.6481633997694
2009-01-01	16.3248468950636
2009-04-01	16.9841071772940
2009-07-01	16.6954177281711
2009-10-01	16.6911192619762
2010-01-01	16.2236946726743
2010-04-01	16.0099308753387
2010-07-01	16.2951043395900
2010-10-01	16.1097467691936
2011-01-01	16.2535095870428
2011-04-01	16.1839369469561
2011-07-01	16.1027462922235
2011-10-01	15.8689316806847
2012-01-01	16.2045907058868
2012-04-01	16.3566821658917
2012-07-01	17.1822448553024
2012-10-01	17.6792085937058
2013-01-01	18.3378307545961
2013-04-01	18.1933379920801
2013-07-01	17.8900362824449
2013-10-01	18.1842045711699
2014-01-01	17.4596985031506
2014-04-01	17.9418010152469
2014-07-01	17.7701360093637
2014-10-01	17.9483677093293
2015-01-01	18.3840874973193
2015-04-01	18.0904830727456
2015-07-01	18.1664330404458
2015-10-01	18.8186157517900
2016-01-01	19.0497819767442
2016-04-01	18.7371159103577
2016-07-01	18.3824576391855
2016-10-01	17.5004233700254
2017-01-01	17.2538694880747
2017-04-01	17.9317717951210
2017-07-01	18.0832526621491
2017-10-01	17.9123248293209
2018-01-01	17.6117734161341
2018-04-01	16.6353349350018