Quarter	Percent, Seasonally Adjusted
1999-01-01	47.9836140191170
1999-04-01	47.1288388151917
1999-07-01	48.0365544697792
1999-10-01	48.6579615524120
2000-01-01	47.2091763005780
2000-04-01	46.8724687246872
2000-07-01	47.5771715721464
2000-10-01	48.4241716799856
2001-01-01	48.2350833184017
2001-04-01	47.9209514441563
2001-07-01	48.4314952185182
2001-10-01	47.7759914255091
2002-01-01	45.9618470315564
2002-04-01	46.2051783966545
2002-07-01	46.3150417332623
2002-10-01	47.7304964539007
2003-01-01	46.1660777385159
2003-04-01	45.9278803869833
2003-07-01	46.0621988611476
2003-10-01	45.9685863874346
2004-01-01	47.2444367176634
2004-04-01	46.8376364581528
2004-07-01	47.0689804023137
2004-10-01	46.2233310392292
2005-01-01	46.3535864255720
2005-04-01	45.9577008357496
2005-07-01	46.4697895451460
2005-10-01	46.4656701292121
2006-01-01	46.9792454415595
2006-04-01	46.6471816283925
2006-07-01	46.1851390618514
2006-10-01	46.5081723625557
2007-01-01	45.8449663327312
2007-04-01	45.8387728459530
2007-07-01	44.8401752393315
2007-10-01	45.0936087798580
2008-01-01	45.8517388161594
2008-04-01	45.0616295821995
2008-07-01	45.4994817826676
2008-10-01	46.3633476258536
2009-01-01	45.9309689677011
2009-04-01	46.2800788954635
2009-07-01	46.2058661634033
2009-10-01	46.3829453718944
2010-01-01	45.8508812977695
2010-04-01	45.7351683383874
2010-07-01	45.8175052329638
2010-10-01	45.4404945904173
2011-01-01	45.6268783231872
2011-04-01	46.0350391885662
2011-07-01	46.2805485329043
2011-10-01	47.7001833740831
2012-01-01	46.8230991924425
2012-04-01	46.4201655151469
2012-07-01	46.4139809350885
2012-10-01	47.0632586895876
2013-01-01	46.9366250188168
2013-04-01	45.0875742313764
2013-07-01	45.5787419306410
2013-10-01	44.9816355595533
2014-01-01	44.9187448513443
2014-04-01	44.8239778757755
2014-07-01	44.6665672087125
2014-10-01	44.5238627056809
2015-01-01	43.4740525649616
2015-04-01	42.6693404634581
2015-07-01	42.8962962962963
2015-10-01	42.8951452006207
2016-01-01	43.3397256232483
2016-04-01	41.2007062978222
2016-07-01	40.8867356676209
2016-10-01	40.7147041593439
2017-01-01	40.0948905109489
2017-04-01	38.9034512887724
2017-07-01	37.7923021060276
2017-10-01	37.2926776272905
2018-01-01	36.9002890173410
2018-04-01	36.5050781531369