Quarter	Percent, Seasonally Adjusted
1998-01-01	37.1702773675958
1998-04-01	37.0060074535837
1998-07-01	36.6098772039562
1998-10-01	36.4953554333049
1999-01-01	36.0911949597744
1999-04-01	36.3221788107495
1999-07-01	36.4214628155617
1999-10-01	36.1409177458218
2000-01-01	36.3715984958075
2000-04-01	36.1529159067892
2000-07-01	36.0482820039230
2000-10-01	36.0775007365683
2001-01-01	36.6168560082785
2001-04-01	36.8264137414074
2001-07-01	36.6920569226550
2001-10-01	36.6665780561286
2002-01-01	36.4623557904200
2002-04-01	35.9463542853489
2002-07-01	35.6191755030251
2002-10-01	35.3875744269388
2003-01-01	35.2447794454390
2003-04-01	35.1907102587494
2003-07-01	34.9648980035701
2003-10-01	34.7766293225018
2004-01-01	33.9497306174135
2004-04-01	33.7977899151987
2004-07-01	33.8488886790348
2004-10-01	33.6824693829413
2005-01-01	33.8443528110330
2005-04-01	33.6548559407745
2005-07-01	33.6222293071261
2005-10-01	33.4330877773011
2006-01-01	33.3193142507711
2006-04-01	33.4124854003610
2006-07-01	33.2620358575276
2006-10-01	33.3367771814519
2007-01-01	33.4492950241646
2007-04-01	33.5493632979096
2007-07-01	33.4264531727466
2007-10-01	33.4218245367137
2008-01-01	33.4667181008537
2008-04-01	33.3301333045332
2008-07-01	33.4041239268720
2008-10-01	33.1606305037311
2009-01-01	32.8390506115351
2009-04-01	32.6951835916432
2009-07-01	32.3463848280260
2009-10-01	32.4099447124015
2010-01-01	32.1485476730720
2010-04-01	32.1154790072064
2010-07-01	32.2019894181042
2010-10-01	32.1870654708349
2011-01-01	32.5353357618631
2011-04-01	32.8059167457295
2011-07-01	32.9303365252330
2011-10-01	32.6975630133251
2012-01-01	32.6440299250497
2012-04-01	32.6218404690459
2012-07-01	32.5408999974814
2012-10-01	32.3107111667493
2013-01-01	32.6294084905406
2013-04-01	32.3326046803484
2013-07-01	32.4486434832351
2013-10-01	32.6988457324952
2014-01-01	32.4325722734489
2014-04-01	32.5544702799484
2014-07-01	32.6080505508222
2014-10-01	32.7005374342332
2015-01-01	32.5715278129783
2015-04-01	32.3429974811742
2015-07-01	32.0464944353532
2015-10-01	31.8007017197779
2016-01-01	31.8311111350233
2016-04-01	31.8369385424350
2016-07-01	31.6036289866388
2016-10-01	31.8614566732482
2017-01-01	31.7549709475876
2017-04-01	31.5774628679113
2017-07-01	31.7524145429714
2017-10-01	31.8519613170786
2018-01-01	31.9881754917885
2018-04-01	31.7418868762760