Quarter	Percent, Seasonally Adjusted
1980-01-01	22.7612270155587
1980-04-01	22.8683206106870
1980-07-01	24.7188529568754
1980-10-01	23.9592939006718
1981-01-01	21.7496859189841
1981-04-01	22.8340554397853
1981-07-01	23.5383009549923
1981-10-01	27.3405557047781
1982-01-01	27.5865907572914
1982-04-01	28.3056668574700
1982-07-01	28.6198045522019
1982-10-01	28.2238764091307
1983-01-01	25.9863991955414
1983-04-01	25.2780153977759
1983-07-01	23.8185916912866
1983-10-01	25.0841575115472
1984-01-01	21.7690603706923
1984-04-01	24.3538780881575
1984-07-01	21.6492280129888
1984-10-01	21.9776722034258
1985-01-01	21.2009749612231
1985-04-01	19.7366067128132
1985-07-01	19.1411275578608
1985-10-01	22.8485588465285
1986-01-01	15.2563409359025
1986-04-01	15.3592430829442
1986-07-01	15.8556872530672
1986-10-01	16.9440045689364
1987-01-01	17.5810854416856
1987-04-01	15.8645566839349
1987-07-01	15.7467625487050
1987-10-01	13.4638860305631
1988-01-01	13.5121045257567
1988-04-01	14.0555116683793
1988-07-01	13.4349123336351
1988-10-01	12.9951883072248
1989-01-01	13.7877208102554
1989-04-01	14.1860556626736
1989-07-01	13.4752705850116
1989-10-01	13.5166201168167
1990-01-01	14.6087737756079
1990-04-01	14.1712853789715
1990-07-01	14.1112385610842
1990-10-01	14.4652736745985
1991-01-01	13.5416666666667
1991-04-01	13.4802704096356
1991-07-01	13.8968363866199
1991-10-01	12.8174322832281
1992-01-01	12.8809619122491
1992-04-01	12.7139102668367
1992-07-01	13.5882643370889
1992-10-01	13.0683872052457
1993-01-01	14.4234401955474
1993-04-01	13.9645354025684
1993-07-01	14.3919631459177
1993-10-01	13.9517274017984
1994-01-01	15.3361191123372
1994-04-01	15.3955634427684
1994-07-01	16.2509361338976
1994-10-01	15.8472567928100
1995-01-01	16.8129832474227
1995-04-01	16.6861793334957
1995-07-01	16.4933878260596
1995-10-01	15.3115240701171
1996-01-01	15.5462499665534
1996-04-01	15.8362949102736
1996-07-01	17.1023860055309
1996-10-01	15.6516795421211
1997-01-01	17.0085785951862
1997-04-01	15.9286983997141
1997-07-01	17.1703378541010
1997-10-01	17.3120332994088
1998-01-01	16.0923506093085
1998-04-01	15.9783102252825
1998-07-01	17.3694322966768
1998-10-01	17.6178073020537
1999-01-01	17.1738028059135
1999-04-01	15.6569726616806
1999-07-01	16.7316443852163
1999-10-01	16.0177464850853
2000-01-01	15.1163290670128
2000-04-01	14.9612201304540
2000-07-01	15.4084129084949
2000-10-01	15.6444637220865
2001-01-01	16.3254636395447
2001-04-01	16.4459947331789
2001-07-01	16.9371337726252
2001-10-01	15.6021628201340
2002-01-01	15.6441820607301
2002-04-01	15.3703161128884
2002-07-01	15.7303929633130
2002-10-01	14.2171751132194
2003-01-01	15.2107523780491
2003-04-01	14.9488412489938
2003-07-01	14.4326668036918
2003-10-01	14.2798447334298
2004-01-01	13.9027096488552
2004-04-01	13.6278033071424
2004-07-01	14.8023180643958
2004-10-01	14.6705325104062
2005-01-01	14.7166528074784
2005-04-01	13.9898401411143
2005-07-01	14.1111834507822
2005-10-01	14.4725210539617
2006-01-01	14.3026163243412
2006-04-01	13.8376158399346
2006-07-01	13.3438997946211
2006-10-01	14.6390557613250
2007-01-01	14.9998586716779
2007-04-01	14.9167457878120
2007-07-01	14.3038246968288
2007-10-01	15.2255790510992
2008-01-01	16.1225971876846
2008-04-01	16.3663771897104
2008-07-01	15.8661008426267
2008-10-01	17.5619757804358
2009-01-01	16.8000437343789
2009-04-01	15.7542297122802
2009-07-01	15.2654068497483
2009-10-01	15.5793389004393
2010-01-01	14.4434564630567
2010-04-01	14.4427147392130
2010-07-01	14.2463797464879
2010-10-01	14.5929079952896
2011-01-01	12.5195784480444
2011-04-01	11.9521063678283
2011-07-01	12.9934040250136
2011-10-01	13.4245177105985
2012-01-01	13.5160192108943
2012-04-01	13.7255765460560
2012-07-01	14.3848214469475
2012-10-01	13.8939314687753
2013-01-01	13.8956949392975
2013-04-01	13.6943129269260
2013-07-01	13.3574781310006
2013-10-01	13.6052254819254
2014-01-01	14.0276023970388
2014-04-01	14.4153834930330
2014-07-01	15.3154082532053
2014-10-01	15.1825093999804
2015-01-01	15.0743067840038
2015-04-01	13.9463751101844
2015-07-01	14.5414088159821
2015-10-01	14.5297361182303
2016-01-01	15.9071139116967
2016-04-01	14.4070892911328
2016-07-01	14.7696621204793
2016-10-01	14.2319204977281
2017-01-01	12.4540205291003
2017-04-01	12.1853898274669
2017-07-01	12.6570228817480
2017-10-01	12.7772580227014
2018-01-01	12.8561962291580
2018-04-01	12.6451352825154
2018-07-01	12.6467583775279