Quarter	Percent, Seasonally Adjusted
1998-01-01	62.8543499511241
1998-04-01	64.1140847821840
1998-07-01	63.7553731926534
1998-10-01	62.0235756385069
1999-01-01	62.2733476311172
1999-04-01	62.0494837327099
1999-07-01	61.6563227307991
1999-10-01	60.5884630274874
2000-01-01	62.0042561423873
2000-04-01	62.1632024634334
2000-07-01	62.8961014019589
2000-10-01	61.9431643625192
2001-01-01	61.9011115369874
2001-04-01	62.2702909647780
2001-07-01	60.9634869049895
2001-10-01	61.5164247517189
2002-01-01	62.7977892128836
2002-04-01	63.0587787711623
2002-07-01	62.0990700322642
2002-10-01	59.9772598067084
2003-01-01	61.6459041147603
2003-04-01	62.3496240601504
2003-07-01	62.6661673843850
2003-10-01	61.8425960462514
2004-01-01	60.4828226555246
2004-04-01	58.9639222941721
2004-07-01	57.9878385848535
2004-10-01	58.8990825688073
2005-01-01	58.7353801169591
2005-04-01	58.5711688783858
2005-07-01	57.4760441149882
2005-10-01	57.6515015285021
2006-01-01	57.5746735825434
2006-04-01	57.9068941009240
2006-07-01	58.8983050847458
2006-10-01	58.3084751710826
2007-01-01	59.0782122905028
2007-04-01	57.8463672620080
2007-07-01	58.5963097085704
2007-10-01	59.1182020929834
2008-01-01	58.0518594336404
2008-04-01	58.2000680503573
2008-07-01	58.8035926114218
2008-10-01	58.2756875316349
2009-01-01	58.2001682085786
2009-04-01	57.5117370892019
2009-07-01	57.0115326759151
2009-10-01	57.0881226053640
2010-01-01	56.1177248677249
2010-04-01	55.9090159881325
2010-07-01	55.4806902218570
2010-10-01	55.7903357903358
2011-01-01	55.9183673469388
2011-04-01	54.0276647681042
2011-07-01	54.3464158287382
2011-10-01	52.6358344113842
2012-01-01	52.7970336933742
2012-04-01	52.1606425702811
2012-07-01	51.5685019206146
2012-10-01	50.0478468899522
2013-01-01	51.5445859872611
2013-04-01	53.4436138062669
2013-07-01	54.2725540025413
2013-10-01	54.8310328415040
2014-01-01	54.1243654822335
2014-04-01	54.5699350546491
2014-07-01	54.6187915216704
2014-10-01	53.7513820881377
2015-01-01	54.6173308032891
2015-04-01	56.6040713271264
2015-07-01	55.9666246851385
2015-10-01	56.6221523959152
2016-01-01	55.1475204017577
2016-04-01	58.9350039154268
2016-07-01	60.6098514464425
2016-10-01	59.2789136881536
2017-01-01	60.3891050583658
2017-04-01	62.2146296008697
2017-07-01	64.1053446940356
2017-10-01	65.4149281409365
2018-01-01	63.9629915188898
2018-04-01	64.5493694247924