Quarter	Percent, Seasonally Adjusted
1998-01-01	30.6686185307407
1998-04-01	30.6340371038836
1998-07-01	30.9555103447424
1998-10-01	30.6323233016666
1999-01-01	30.2852789350922
1999-04-01	30.4376663595275
1999-07-01	30.3615789663056
1999-10-01	29.9415158589002
2000-01-01	30.6056218632157
2000-04-01	30.4243152142971
2000-07-01	30.5448277028134
2000-10-01	31.4192928278442
2001-01-01	30.5888907099773
2001-04-01	30.3617167748100
2001-07-01	30.4006267573938
2001-10-01	30.3909900472661
2002-01-01	30.0228234733162
2002-04-01	30.2709319175102
2002-07-01	30.6012598590091
2002-10-01	30.4578920102077
2003-01-01	29.6904269065738
2003-04-01	29.6229120628390
2003-07-01	29.8268037620608
2003-10-01	29.7578069350281
2004-01-01	33.2303645341017
2004-04-01	32.2534699604588
2004-07-01	31.9771696954734
2004-10-01	31.5027032408002
2005-01-01	31.0128465988679
2005-04-01	30.7872468651925
2005-07-01	29.7828353124603
2005-10-01	30.1249770760169
2006-01-01	30.7055897285364
2006-04-01	30.7657028089498
2006-07-01	30.0391766789924
2006-10-01	29.9618215613386
2007-01-01	29.3158469970387
2007-04-01	29.5402121409530
2007-07-01	29.7844084322476
2007-10-01	28.8836131733148
2008-01-01	29.3981982132676
2008-04-01	30.1359229287178
2008-07-01	28.7536299911216
2008-10-01	27.7394872279949
2009-01-01	26.6845040167868
2009-04-01	25.6717945082532
2009-07-01	26.1519019367097
2009-10-01	25.2922947795252
2010-01-01	24.9025024760766
2010-04-01	23.9620323370252
2010-07-01	23.2308091098967
2010-10-01	23.8761061564070
2011-01-01	23.6572015838648
2011-04-01	22.6361615866585
2011-07-01	22.2463059393038
2011-10-01	22.4718143196007
2012-01-01	22.7201491918500
2012-04-01	22.1830299978507
2012-07-01	21.7636450784776
2012-10-01	20.4821727907437
2013-01-01	19.0836331506095
2013-04-01	19.1986060532746
2013-07-01	18.1908238991485
2013-10-01	18.3804491180977
2014-01-01	17.9302361312978
2014-04-01	17.9900132431071
2014-07-01	18.3526883033854
2014-10-01	18.5134349574640
2015-01-01	18.2251661494583
2015-04-01	18.0271085356913
2015-07-01	19.1959666718621
2015-10-01	19.0993277787346
2016-01-01	18.6255860267734
2016-04-01	19.7766834720003
2016-07-01	19.2448098034716
2016-10-01	19.1900839825058
2017-01-01	19.8565170267366
2017-04-01	19.5774445621347
2017-07-01	20.2592450641334
2017-10-01	20.6495387142661
2018-01-01	21.2603526430909
2018-04-01	21.2399416951889