Quarter	Percent, Seasonally Adjusted
1998-01-01	24.9703824654005
1998-04-01	26.7124375160172
1998-07-01	24.0840438315695
1998-10-01	24.1699217224598
1999-01-01	22.0710623087898
1999-04-01	22.3127072736237
1999-07-01	22.6946254038238
1999-10-01	21.5598563173333
2000-01-01	22.6670392202333
2000-04-01	22.0701473239838
2000-07-01	20.8151814224774
2000-10-01	21.2656918705471
2001-01-01	19.9992230740765
2001-04-01	20.1149097867892
2001-07-01	20.1576603814731
2001-10-01	19.6294151350452
2002-01-01	21.8066047780570
2002-04-01	20.6495719744524
2002-07-01	19.8816491092205
2002-10-01	20.9559952301900
2003-01-01	20.6801680198181
2003-04-01	21.0714293450047
2003-07-01	22.5418761667032
2003-10-01	22.2525014223761
2004-01-01	19.4288430343704
2004-04-01	20.2303864445760
2004-07-01	19.4092433824020
2004-10-01	18.3463337955063
2005-01-01	19.9200952857772
2005-04-01	19.4185003169424
2005-07-01	19.3116358399006
2005-10-01	19.4290673270581
2006-01-01	18.1825438827223
2006-04-01	19.1010472317374
2006-07-01	18.1210585041835
2006-10-01	18.3076780828444
2007-01-01	18.8258287375699
2007-04-01	16.0671889466402
2007-07-01	15.7314256221950
2007-10-01	15.7953587139515
2008-01-01	16.0561731315737
2008-04-01	15.0603539881009
2008-07-01	16.2588299398172
2008-10-01	15.7448432007486
2009-01-01	14.1902265596463
2009-04-01	20.2436476472651
2009-07-01	21.0412224078034
2009-10-01	20.6352337001488
2010-01-01	19.3331111521846
2010-04-01	19.7401037585088
2010-07-01	18.8260570187190
2010-10-01	18.2595265308371
2011-01-01	20.1183400821414
2011-04-01	18.2825070589067
2011-07-01	17.7976733216140
2011-10-01	17.3426009099846
2012-01-01	17.8535824978835
2012-04-01	17.1141646768526
2012-07-01	19.0339372826261
2012-10-01	18.0112156487729
2013-01-01	16.9057509965928
2013-04-01	16.7740592691348
2013-07-01	17.0810257362605
2013-10-01	17.3968102899947
2014-01-01	18.5159840941043
2014-04-01	18.0149352842842
2014-07-01	16.9642168768276
2014-10-01	19.9382853483365
2015-01-01	18.7601579279046
2015-04-01	19.8180687782352
2015-07-01	20.2534144318855
2015-10-01	19.9061009869578
2016-01-01	18.0121131046391
2016-04-01	19.3897820503013
2016-07-01	18.7191152158709
2016-10-01	18.2926905373328
2017-01-01	20.0232471511329
2017-04-01	21.2185658709315
2017-07-01	18.9132320275661
2017-10-01	17.2803573166356
2018-01-01	17.8886262821603
2018-04-01	15.3166885693608