Quarter	Percent, Seasonally Adjusted
1999-01-01	48.4595975298466
1999-04-01	48.3196922856922
1999-07-01	47.9809093514274
1999-10-01	47.5891848036467
2000-01-01	47.4206241684645
2000-04-01	47.1769813731127
2000-07-01	46.8620968024766
2000-10-01	46.6623316447897
2001-01-01	48.0238708070617
2001-04-01	47.8749493578573
2001-07-01	47.5431808777483
2001-10-01	47.2527340612085
2002-01-01	46.6064733035701
2002-04-01	46.2113665833852
2002-07-01	45.8726796771346
2002-10-01	45.6995135317249
2003-01-01	45.3568373020159
2003-04-01	45.0620875105365
2003-07-01	44.6354625778501
2003-10-01	44.4074889908384
2004-01-01	44.3631614263912
2004-04-01	44.1638378442552
2004-07-01	43.8426274917893
2004-10-01	43.5517745888589
2005-01-01	43.2709950116762
2005-04-01	42.8798626175301
2005-07-01	42.8869688945663
2005-10-01	42.6010837094476
2006-01-01	42.3305337447363
2006-04-01	42.1125750236328
2006-07-01	42.0119514838269
2006-10-01	41.7672582214082
2007-01-01	41.7017632016346
2007-04-01	41.5253018295068
2007-07-01	41.2743699696478
2007-10-01	41.1931322480336
2008-01-01	40.9390380340308
2008-04-01	40.6965906421653
2008-07-01	40.5669622774849
2008-10-01	40.3245468738264
2009-01-01	40.2325381309970
2009-04-01	40.4628058051367
2009-07-01	40.6859922878851
2009-10-01	40.6372895330234
2010-01-01	40.4800455696579
2010-04-01	40.3387524816702
2010-07-01	40.3611916457991
2010-10-01	40.3794510400634
2011-01-01	40.3955397678856
2011-04-01	40.2853389055775
2011-07-01	40.2668766461839
2011-10-01	40.3363652335208
2012-01-01	40.2342251868988
2012-04-01	40.2048265526592
2012-07-01	40.1818580141957
2012-10-01	40.3951582546455
2013-01-01	40.3558102515276
2013-04-01	40.7027632508280
2013-07-01	40.6858360504105
2013-10-01	40.8050934355932
2014-01-01	41.0775330162428
2014-04-01	41.0963097145104
2014-07-01	41.1960414176140
2014-10-01	40.9162203191439
2015-01-01	41.1508426963002
2015-04-01	40.9954695365490
2015-07-01	41.2707677761836
2015-10-01	41.2721688044451
2016-01-01	41.2940213147506
2016-04-01	41.3779096510113
2016-07-01	41.5029378424406
2016-10-01	41.7613224152475
2017-01-01	41.8031422340088
2017-04-01	41.9607447629144
2017-07-01	41.8737069216605
2017-10-01	41.9190480368168
2018-01-01	42.1049483196742
2018-04-01	42.0114542237963
2018-07-01	42.0762887325649