Quarter	Percent, Seasonally Adjusted
1998-01-01	36.1068042876947
1998-04-01	35.6772217762562
1998-07-01	36.6615984819159
1998-10-01	36.7367393802175
1999-01-01	38.3567973133830
1999-04-01	38.9188072598754
1999-07-01	38.7209715481777
1999-10-01	39.1590243940367
2000-01-01	40.2349860249148
2000-04-01	41.0018199334828
2000-07-01	41.9662458037428
2000-10-01	43.4082092564575
2001-01-01	44.1031750634147
2001-04-01	45.4357009014649
2001-07-01	46.4626804319087
2001-10-01	46.9136399373065
2002-01-01	46.7825121779227
2002-04-01	47.7032864810928
2002-07-01	48.3113493064635
2002-10-01	48.5573755765749
2003-01-01	48.5961346150863
2003-04-01	49.3848698934447
2003-07-01	50.7636853055295
2003-10-01	49.7705085656665
2004-01-01	50.6541584980460
2004-04-01	50.8803596439052
2004-07-01	51.0105381527456
2004-10-01	51.1633317111282
2005-01-01	51.5851493441895
2005-04-01	52.6105879251938
2005-07-01	53.3816858467346
2005-10-01	53.3605049571236
2006-01-01	53.7162679709074
2006-04-01	54.2637164366179
2006-07-01	54.6932828606435
2006-10-01	55.4918632816810
2007-01-01	55.0553437678260
2007-04-01	55.2856673750327
2007-07-01	55.0018748257090
2007-10-01	54.7964542393254
2008-01-01	55.7604464420734
2008-04-01	56.6562428804653
2008-07-01	56.7923560730028
2008-10-01	56.6303314804228
2009-01-01	55.9759555659186
2009-04-01	55.6456350895487
2009-07-01	55.4372005942789
2009-10-01	54.7748273996783
2010-01-01	55.5625261611293
2010-04-01	56.4514452690592
2010-07-01	56.2968591210607
2010-10-01	56.6815134924564
2011-01-01	56.2543880577556
2011-04-01	57.2246694355489
2011-07-01	57.0621204211504
2011-10-01	57.3480909182691
2012-01-01	57.7017078808067
2012-04-01	58.0432206352856
2012-07-01	58.6036280392246
2012-10-01	58.3443135923962
2013-01-01	57.9620234495422
2013-04-01	58.7227957937942
2013-07-01	58.9702124730060
2013-10-01	58.4768984684234
2014-01-01	58.9058794928670
2014-04-01	59.1273068670155
2014-07-01	58.7700209721127
2014-10-01	59.6994344465326
2015-01-01	59.5337866081318
2015-04-01	59.4202553909727
2015-07-01	60.5547089488902
2015-10-01	60.3981499021798
2016-01-01	60.7586610522477
2016-04-01	61.1934987461513
2016-07-01	62.2662284800945
2016-10-01	61.4316736708225
2017-01-01	61.7003161389524
2017-04-01	62.3261447243332
2017-07-01	62.4501624299023
2017-10-01	63.6623926120776
2018-01-01	65.2412935919271
2018-04-01	64.9885475737526