Quarter	Percent, Seasonally Adjusted
1998-01-01	47.6630684979570
1998-04-01	47.0459837077163
1998-07-01	46.3608393717049
1998-10-01	46.5713959943537
1999-01-01	46.2661386116145
1999-04-01	47.1931200967880
1999-07-01	47.3198246114254
1999-10-01	48.8797163351143
2000-01-01	48.1851961485851
2000-04-01	47.4920883006202
2000-07-01	48.1604547874508
2000-10-01	48.4566530274104
2001-01-01	48.8643132122976
2001-04-01	48.6302441183243
2001-07-01	49.0404565553632
2001-10-01	48.0126215632322
2002-01-01	48.2885589710577
2002-04-01	47.9641086123874
2002-07-01	47.3513065484190
2002-10-01	47.0695017386487
2003-01-01	45.0973177065690
2003-04-01	43.3282294303256
2003-07-01	41.9716744251138
2003-10-01	40.7746468165818
2004-01-01	40.9897904408963
2004-04-01	41.3633597079574
2004-07-01	40.9420612288079
2004-10-01	40.2252997904095
2005-01-01	40.2943885288392
2005-04-01	39.9600904532641
2005-07-01	39.2985326221460
2005-10-01	38.9261959913620
2006-01-01	39.3670454114290
2006-04-01	39.3493245148751
2006-07-01	38.2700660440699
2006-10-01	37.9365573791046
2007-01-01	38.1608523244474
2007-04-01	38.4483157176128
2007-07-01	39.0129787105580
2007-10-01	38.4742142298554
2008-01-01	39.2316553239238
2008-04-01	38.7005759914773
2008-07-01	36.4497062747123
2008-10-01	36.2933113480084
2009-01-01	33.8034076111138
2009-04-01	32.6027633492291
2009-07-01	32.4304985521904
2009-10-01	30.9960395751377
2010-01-01	30.3303459061934
2010-04-01	29.7978304744778
2010-07-01	28.8689726401649
2010-10-01	29.9950485988026
2011-01-01	29.9614316165714
2011-04-01	28.3464075750907
2011-07-01	29.3813922713062
2011-10-01	26.9324225195537
2012-01-01	25.6657497101067
2012-04-01	25.2138216236282
2012-07-01	24.8603865900755
2012-10-01	23.3855068923280
2013-01-01	22.5786304204467
2013-04-01	23.1386134205534
2013-07-01	22.8266447509160
2013-10-01	23.0924863195259
2014-01-01	22.5867911372463
2014-04-01	21.4855374119931
2014-07-01	24.8345602700188
2014-10-01	22.5763635073991
2015-01-01	24.1525360423008
2015-04-01	23.7586023952645
2015-07-01	24.2616524313058
2015-10-01	24.1955032603445
2016-01-01	24.4991959003834
2016-04-01	25.8297541907394
2016-07-01	25.8693096620324
2016-10-01	25.7499238956715
2017-01-01	27.6959774470215
2017-04-01	26.8393730255216
2017-07-01	27.4911948039675
2017-10-01	28.3653086417565
2018-01-01	28.2572313053685
2018-04-01	29.2826231053706