Quarter	Percent, Seasonally Adjusted
1998-01-01	38.0828240824128
1998-04-01	37.9367094567920
1998-07-01	37.9584105304197
1998-10-01	37.9907336649399
1999-01-01	38.0602988556109
1999-04-01	38.0556438738682
1999-07-01	38.0169168228205
1999-10-01	38.1221059337327
2000-01-01	38.1307485767361
2000-04-01	38.0951898074697
2000-07-01	38.0140635903660
2000-10-01	37.9427352089158
2001-01-01	38.1261552325337
2001-04-01	38.3547691049610
2001-07-01	38.2098138786253
2001-10-01	38.2743217056019
2002-01-01	38.1811610639050
2002-04-01	38.1234134066274
2002-07-01	38.0511681641320
2002-10-01	38.0442186929862
2003-01-01	37.8225985809091
2003-04-01	37.8555749809544
2003-07-01	37.8086009752897
2003-10-01	37.7929965418614
2004-01-01	38.4654434862976
2004-04-01	38.2515970804713
2004-07-01	38.3946617908683
2004-10-01	38.5133514484320
2005-01-01	38.6750117911685
2005-04-01	38.8928223313374
2005-07-01	39.0875546866898
2005-10-01	39.0276018663532
2006-01-01	38.9484219104898
2006-04-01	38.9838370664201
2006-07-01	39.2969589355624
2006-10-01	39.4023097990742
2007-01-01	39.6855334887953
2007-04-01	39.6578636289767
2007-07-01	39.4222383513313
2007-10-01	39.4707500927334
2008-01-01	39.5199127304892
2008-04-01	39.3679550486861
2008-07-01	39.6584905073701
2008-10-01	39.8877190219423
2009-01-01	40.1754427666969
2009-04-01	40.4754279809514
2009-07-01	40.4173141828765
2009-10-01	40.6413815387881
2010-01-01	40.5853402517468
2010-04-01	40.7456718784756
2010-07-01	41.2151312430318
2010-10-01	41.1212103033246
2011-01-01	41.2409948517601
2011-04-01	41.4456669530951
2011-07-01	41.3036382283487
2011-10-01	41.1462562641127
2012-01-01	40.8528768144265
2012-04-01	40.6066999338685
2012-07-01	40.7697331528323
2012-10-01	40.8053757699440
2013-01-01	41.1490375536962
2013-04-01	41.3482401236647
2013-07-01	41.4111451081584
2013-10-01	41.4999188793512
2014-01-01	41.3058393253220
2014-04-01	41.4270206171490
2014-07-01	41.2422199335144
2014-10-01	41.2072878022149
2015-01-01	41.2916733794968
2015-04-01	41.1111113191046
2015-07-01	41.0535292603951
2015-10-01	41.0198152176420
2016-01-01	40.9918726801856
2016-04-01	40.6653389076280
2016-07-01	40.7532099498181
2016-10-01	40.5866064818377
2017-01-01	40.5212917286802
2017-04-01	40.7908323690334
2017-07-01	40.5782702668909
2017-10-01	40.6514184579080
2018-01-01	40.6304854135056
2018-04-01	40.2847826148186