Quarter	Percent, Seasonally Adjusted
1999-01-01	29.7366459916868
1999-04-01	29.2585486156030
1999-07-01	28.9365832026749
1999-10-01	28.0694058418485
2000-01-01	28.3822000230308
2000-04-01	28.0050509825178
2000-07-01	28.3726078263483
2000-10-01	27.9620842565711
2001-01-01	27.2584943790857
2001-04-01	26.9923339877500
2001-07-01	26.2945598791455
2001-10-01	25.6372005521976
2002-01-01	25.5938851107960
2002-04-01	24.9945307607777
2002-07-01	25.5432805082592
2002-10-01	25.0531155394477
2003-01-01	25.5650963839666
2003-04-01	25.7444466487732
2003-07-01	24.9890405668734
2003-10-01	25.3255444587740
2004-01-01	25.1024109258977
2004-04-01	24.8967567078240
2004-07-01	24.4524227250513
2004-10-01	23.9678780702967
2005-01-01	23.4991389694996
2005-04-01	23.5353207696349
2005-07-01	22.5564636854512
2005-10-01	22.6946976096247
2006-01-01	21.8038688352453
2006-04-01	22.2225359395152
2006-07-01	22.5698606473833
2006-10-01	23.5431489812118
2007-01-01	24.4472608877080
2007-04-01	24.8858757247958
2007-07-01	24.1438841037886
2007-10-01	22.9439281016479
2008-01-01	22.8969319369717
2008-04-01	22.0115858158296
2008-07-01	20.6453226316738
2008-10-01	20.2037017204858
2009-01-01	18.8268822371518
2009-04-01	18.6929072928491
2009-07-01	18.7321097914267
2009-10-01	18.4298438616386
2010-01-01	17.5334571655661
2010-04-01	17.2600069542632
2010-07-01	17.6023478070710
2010-10-01	17.0455224601824
2011-01-01	15.9950319865778
2011-04-01	15.0488737678631
2011-07-01	14.3918462529352
2011-10-01	14.6109464672859
2012-01-01	15.5309077879910
2012-04-01	16.0127310946912
2012-07-01	16.2231603267720
2012-10-01	16.0411055271780
2013-01-01	17.3845084960253
2013-04-01	16.3621303420874
2013-07-01	15.7850880770614
2013-10-01	15.2546739912841
2014-01-01	15.4563207375482
2014-04-01	15.1902007521154
2014-07-01	17.3868720550602
2014-10-01	17.9342742342855
2015-01-01	18.1076673230900
2015-04-01	17.9269798944989
2015-07-01	18.4242499009676
2015-10-01	17.6400029449191
2016-01-01	17.1646866958394
2016-04-01	16.9691526296927
2016-07-01	18.6751753429859
2016-10-01	20.0572430952026
2017-01-01	20.3912190261361
2017-04-01	21.7189918075679
2017-07-01	21.0586906906470
2017-10-01	21.3657251186055
2018-01-01	20.2313171669369
2018-04-01	20.5190375160654