Quarter	Percent, Seasonally Adjusted
1999-01-01	52.2974685913785
1999-04-01	52.2439247745652
1999-07-01	52.1207526161333
1999-10-01	51.8714604545933
2000-01-01	51.8932905490658
2000-04-01	52.6032818557709
2000-07-01	52.4498376975424
2000-10-01	51.7802756456845
2001-01-01	51.4102756188777
2001-04-01	51.2130714076721
2001-07-01	51.3681779343445
2001-10-01	51.3843079501118
2002-01-01	51.5427934990534
2002-04-01	51.5395136398779
2002-07-01	51.9018207937916
2002-10-01	51.9873960420790
2003-01-01	51.4584816245282
2003-04-01	51.7159272398624
2003-07-01	51.6250293720630
2003-10-01	52.5003867991739
2004-01-01	52.4612410174562
2004-04-01	52.4295728844326
2004-07-01	52.6556271947704
2004-10-01	52.6351302451654
2005-01-01	53.3587848908083
2005-04-01	53.2634557945474
2005-07-01	53.2336545536941
2005-10-01	53.3409065646973
2006-01-01	52.8632553607397
2006-04-01	53.0144574695149
2006-07-01	52.9528115980264
2006-10-01	53.6222320805355
2007-01-01	53.7296470331014
2007-04-01	53.7254638346281
2007-07-01	53.1679611177105
2007-10-01	53.7492734100768
2008-01-01	53.9722149731527
2008-04-01	53.3465864538524
2008-07-01	54.1057750501024
2008-10-01	53.2883589534005
2009-01-01	53.6536154592253
2009-04-01	53.3034361152221
2009-07-01	53.3672685320196
2009-10-01	53.5660859489194
2010-01-01	54.2787213673040
2010-04-01	53.7520349065342
2010-07-01	54.0844093242719
2010-10-01	54.1638228509329
2011-01-01	52.8171592500841
2011-04-01	53.5518583210273
2011-07-01	53.1720507324011
2011-10-01	53.2530194925670
2012-01-01	53.0255939492187
2012-04-01	53.1648842054018
2012-07-01	53.3789092658895
2012-10-01	53.4244598845195
2013-01-01	53.2514923338481
2013-04-01	53.7948516074593
2013-07-01	53.9239496982824
2013-10-01	53.2649662412468
2014-01-01	53.3640181404810
2014-04-01	53.5432477710133
2014-07-01	53.5431499305547
2014-10-01	53.5711871550946
2015-01-01	53.7087693205443
2015-04-01	53.1013805646930
2015-07-01	53.1636042751574
2015-10-01	53.2653217621336
2016-01-01	52.9091500449024
2016-04-01	53.0604316422874
2016-07-01	52.8980002804968
2016-10-01	53.5838780590312
2017-01-01	53.5903511338832
2017-04-01	53.7501935343326
2017-07-01	53.9542110733437
2017-10-01	54.0483659029058
2018-01-01	54.0223228052690
2018-04-01	53.8707533679532