Quarter	Percent, Seasonally Adjusted
1999-01-01	21.6994291235447
1999-04-01	21.3859713548870
1999-07-01	21.3483692187666
1999-10-01	21.1105563214964
2000-01-01	20.8992619510140
2000-04-01	20.9537162608357
2000-07-01	20.9348968686591
2000-10-01	20.3799649582678
2001-01-01	20.8210158308686
2001-04-01	21.7782087495800
2001-07-01	22.0008346071324
2001-10-01	21.5773213447049
2002-01-01	22.1185165680586
2002-04-01	21.8647743583959
2002-07-01	22.1594111964305
2002-10-01	22.3313315398653
2003-01-01	22.1325397519584
2003-04-01	22.3989748325809
2003-07-01	22.4362506970637
2003-10-01	22.7240677955891
2004-01-01	23.0839106489080
2004-04-01	23.0414737787646
2004-07-01	22.7589402163320
2004-10-01	22.5351269826700
2005-01-01	22.5595184999131
2005-04-01	21.7209510469761
2005-07-01	21.4843890997985
2005-10-01	21.4567977771413
2006-01-01	21.1077065344898
2006-04-01	20.7538507336821
2006-07-01	20.7263992948435
2006-10-01	20.6870605879204
2007-01-01	20.7260906464978
2007-04-01	20.7795222193114
2007-07-01	20.9095651193395
2007-10-01	20.8715656879938
2008-01-01	21.0386649085071
2008-04-01	21.3078827934446
2008-07-01	21.4433027170424
2008-10-01	22.9764700484761
2009-01-01	24.3551094602847
2009-04-01	24.2098944532755
2009-07-01	23.8740185845065
2009-10-01	23.3717646832183
2010-01-01	22.7980501984738
2010-04-01	22.5818185445286
2010-07-01	21.8956328412510
2010-10-01	22.1428882955856
2011-01-01	20.8998289326523
2011-04-01	21.5014254175052
2011-07-01	21.6801059062035
2011-10-01	21.8901713503459
2012-01-01	21.7534177620726
2012-04-01	22.2760250436086
2012-07-01	22.2381682355933
2012-10-01	22.7009157302238
2013-01-01	23.1090703395272
2013-04-01	23.2939825441306
2013-07-01	23.4478492835757
2013-10-01	23.8715551768956
2014-01-01	23.7529321665083
2014-04-01	24.2121898127316
2014-07-01	24.4874118219106
2014-10-01	24.1336776361124
2015-01-01	25.3780218255415
2015-04-01	24.7040974617443
2015-07-01	24.6419652383106
2015-10-01	24.8595534331299
2016-01-01	25.9828242623624
2016-04-01	25.1994229854182
2016-07-01	25.3749006158242
2016-10-01	24.8351692493229
2017-01-01	24.3703850948982
2017-04-01	24.6701871073568
2017-07-01	24.8247756329933
2017-10-01	24.4440084746335
2018-01-01	24.4289592202742
2018-04-01	24.2047030326359