Quarter	Percent, Seasonally Adjusted
1998-01-01	31.2240737899911
1998-04-01	32.4841867380627
1998-07-01	30.6042271263794
1998-10-01	30.8834799111957
1999-01-01	30.6546296881534
1999-04-01	29.8889013828552
1999-07-01	30.3836686759110
1999-10-01	30.0435840885115
2000-01-01	30.0343928541454
2000-04-01	29.4968395743876
2000-07-01	29.6938766004731
2000-10-01	29.7920835706138
2001-01-01	29.6389981650608
2001-04-01	29.4872937443565
2001-07-01	29.6694752931446
2001-10-01	29.4549906187346
2002-01-01	30.0453538807559
2002-04-01	29.7908231316804
2002-07-01	30.1339253129954
2002-10-01	30.3375241185651
2003-01-01	30.4187655077308
2003-04-01	30.0212558893335
2003-07-01	30.1163514808743
2003-10-01	30.7195126241123
2004-01-01	30.5799327565051
2004-04-01	30.8791331780820
2004-07-01	30.6844281683890
2004-10-01	30.7934450892578
2005-01-01	30.6291800954966
2005-04-01	30.8019478323669
2005-07-01	31.0836837980032
2005-10-01	30.2388406480652
2006-01-01	30.1498145230824
2006-04-01	30.6101477713939
2006-07-01	29.8942101162492
2006-10-01	30.1875830286019
2007-01-01	30.5524532318139
2007-04-01	30.0920590834496
2007-07-01	29.5544352072407
2007-10-01	29.7108584540085
2008-01-01	29.3987585777253
2008-04-01	28.9572185134119
2008-07-01	29.6081104837802
2008-10-01	29.4031726602092
2009-01-01	30.3493273664119
2009-04-01	30.6938316463907
2009-07-01	31.4298326757242
2009-10-01	31.3422875364917
2010-01-01	30.7218022855312
2010-04-01	31.1178390893414
2010-07-01	30.8179259840616
2010-10-01	31.1172374480059
2011-01-01	30.6136165279195
2011-04-01	30.4551969364957
2011-07-01	30.9382659715299
2011-10-01	30.6381209367301
2012-01-01	30.9501102254870
2012-04-01	31.0715087061377
2012-07-01	31.0715822582738
2012-10-01	31.3493238643036
2013-01-01	31.7792819100520
2013-04-01	31.4532380270238
2013-07-01	31.6291845222079
2013-10-01	32.2872869058010
2014-01-01	32.0446158040029
2014-04-01	32.0486480150138
2014-07-01	32.3165093809019
2014-10-01	31.5547356918683
2015-01-01	31.7839123062745
2015-04-01	32.2178704155540
2015-07-01	31.7702657926243
2015-10-01	32.0806829084050
2016-01-01	31.8560164369651
2016-04-01	31.7863138599457
2016-07-01	32.0568498586292
2016-10-01	31.8019116671449
2017-01-01	31.7678228570765
2017-04-01	31.5634605441154
2017-07-01	31.2370694613197
2017-10-01	30.7891763869595
2018-01-01	30.8879477356957
2018-04-01	31.1098871972937