Quarter	Percent, Seasonally Adjusted
1991-01-01	14.4816485303734
1991-04-01	15.4405456953201
1991-07-01	18.3156044539146
1991-10-01	15.5532773331570
1992-01-01	15.8116869708858
1992-04-01	17.0129491610110
1992-07-01	19.9754861364163
1992-10-01	17.0247825481018
1993-01-01	17.2454437489396
1993-04-01	18.4851994739913
1993-07-01	21.5065997142833
1993-10-01	17.6973884252846
1994-01-01	17.5885564348893
1994-04-01	18.2189788140070
1994-07-01	21.3453381478737
1994-10-01	16.9587367839551
1995-01-01	17.5482125603865
1995-04-01	17.8275074006473
1995-07-01	21.1941652180485
1995-10-01	17.3357112851995
1996-01-01	17.3550194931774
1996-04-01	18.3671198736064
1996-07-01	21.4605380547919
1996-10-01	18.1230777912587
1997-01-01	17.4802507447007
1997-04-01	18.4033940577597
1997-07-01	20.8846823963392
1997-10-01	17.9386947006212
1998-01-01	16.7444328330204
1998-04-01	17.8023526762282
1998-07-01	21.0580769636586
1998-10-01	18.0723681932734
1999-01-01	17.1081366246258
1999-04-01	18.1545007770342
1999-07-01	20.6405419121379
1999-10-01	18.3612226449999
2000-01-01	16.9352174710956
2000-04-01	17.3485800329509
2000-07-01	19.4237574975573
2000-10-01	16.9212569634138
2001-01-01	17.1453935035438
2001-04-01	17.5958268012505
2001-07-01	21.0626069074661
2001-10-01	18.8224276623844
2002-01-01	18.1103282211238
2002-04-01	17.7135970468640
2002-07-01	20.7254286777822
2002-10-01	17.5774841223951
2003-01-01	16.5526812320883
2003-04-01	17.0624433882098
2003-07-01	20.6757376834259
2003-10-01	17.1447885028521
2004-01-01	16.7715767752684
2004-04-01	17.6760576155577
2004-07-01	19.8280976105836
2004-10-01	16.9028371057936
2005-01-01	16.4916251899315
2005-04-01	16.7021237044412
2005-07-01	19.6348454383999
2005-10-01	16.6544719696178
2006-01-01	15.5137655856555
2006-04-01	15.5942520633242
2006-07-01	18.1742098169645
2006-10-01	15.8766202056562
2007-01-01	14.4310942995373
2007-04-01	14.8452169125960
2007-07-01	18.0835002516272
2007-10-01	15.7053708712865
2008-01-01	14.6538393203788
2008-04-01	15.4994483442332
2008-07-01	18.1764475487956
2008-10-01	16.3951053187254
2009-01-01	15.6590375203288
2009-04-01	17.6166114956365
2009-07-01	20.2491974623378
2009-10-01	17.3500796037502
2010-01-01	15.7418929529058
2010-04-01	16.3406370151743
2010-07-01	18.4988667651326
2010-10-01	16.2873843344286
2011-01-01	14.8301869115098
2011-04-01	15.2682145953479
2011-07-01	18.1202081258683
2011-10-01	16.4563751843860
2012-01-01	15.5266543486632
2012-04-01	16.3998115270752
2012-07-01	19.5752795563307
2012-10-01	17.4492969937575
2013-01-01	16.8194205093650
2013-04-01	17.7715900491865
2013-07-01	20.0990046465552
2013-10-01	18.6595103600716
2014-01-01	16.3924136828455
2014-04-01	17.1092326018629
2014-07-01	20.2768772452466
2014-10-01	19.1097265369641
2015-01-01	16.7668195390968
2015-04-01	17.1103711524405
2015-07-01	20.4814632127407
2015-10-01	20.2423109115492
2016-01-01	17.9387074517019
2016-04-01	18.1748969074958
2016-07-01	20.7971136980190
2016-10-01	19.8888164312392
2017-01-01	17.3741188582714
2017-04-01	17.9260061020265
2017-07-01	20.7490572282641
2017-10-01	19.4004891353061
2018-01-01	16.8776556928221
2018-04-01	17.6050625881459