Quarter	Percent, Seasonally Adjusted
1998-01-01	23.2083140039571
1998-04-01	26.2715490582375
1998-07-01	24.5174791281551
1998-10-01	22.1605208771202
1999-01-01	21.4106215768076
1999-04-01	21.4613800739156
1999-07-01	21.2823036167221
1999-10-01	21.7385106799471
2000-01-01	22.7445146476034
2000-04-01	21.4458019806736
2000-07-01	20.4962141896000
2000-10-01	20.9844121878956
2001-01-01	19.4089344321343
2001-04-01	19.7263652828985
2001-07-01	19.9014353237755
2001-10-01	20.0213540389772
2002-01-01	21.5024912081632
2002-04-01	21.3933347312345
2002-07-01	20.1864989601273
2002-10-01	20.9190174631113
2003-01-01	21.6486907241102
2003-04-01	21.0970374618887
2003-07-01	22.3643130651324
2003-10-01	21.9779920229359
2004-01-01	20.8273164539061
2004-04-01	20.6148096366355
2004-07-01	20.7918571112680
2004-10-01	20.5189441283728
2005-01-01	20.2156583991916
2005-04-01	20.3992959786956
2005-07-01	20.3221987979851
2005-10-01	19.3789470329866
2006-01-01	19.1526094060069
2006-04-01	19.9198721453927
2006-07-01	18.4846423902837
2006-10-01	17.3731091616267
2007-01-01	18.4971056163381
2007-04-01	15.9387398493457
2007-07-01	15.4192213308558
2007-10-01	16.2608902395492
2008-01-01	15.6200397889939
2008-04-01	16.4044169184974
2008-07-01	16.5578918955132
2008-10-01	17.2087792424806
2009-01-01	17.4839777049528
2009-04-01	22.2885810178872
2009-07-01	22.8672489872234
2009-10-01	23.5789330590576
2010-01-01	22.2633077816218
2010-04-01	21.4964219069024
2010-07-01	20.4098682131348
2010-10-01	21.4462235148301
2011-01-01	20.3381645213851
2011-04-01	19.7924332398873
2011-07-01	20.4633195864599
2011-10-01	19.6632169441255
2012-01-01	19.1885962167158
2012-04-01	17.9680782162288
2012-07-01	19.4301587280900
2012-10-01	19.2333940551100
2013-01-01	20.0756129425268
2013-04-01	20.2206134534474
2013-07-01	19.8927181366450
2013-10-01	19.4718897637088
2014-01-01	20.7204526593668
2014-04-01	19.4730017949608
2014-07-01	19.6842282155631
2014-10-01	22.2661167847843
2015-01-01	21.9195214784731
2015-04-01	22.8346036113251
2015-07-01	23.0676742412660
2015-10-01	21.9377933484079
2016-01-01	20.4340980472688
2016-04-01	20.1547861324898
2016-07-01	20.2011088314179
2016-10-01	19.8233773030334
2017-01-01	20.5649012897180
2017-04-01	21.4829806103834
2017-07-01	20.2543835532073
2017-10-01	18.2499449842840
2018-01-01	18.3796587859256
2018-04-01	16.0095451688719