Quarter	Percent, Seasonally Adjusted
1999-01-01	30.2955120804523
1999-04-01	30.4570160079228
1999-07-01	30.6228457691283
1999-10-01	30.7246281447950
2000-01-01	30.7759767215643
2000-04-01	31.1007038549949
2000-07-01	31.2961549904835
2000-10-01	31.4172482519895
2001-01-01	31.7344467465368
2001-04-01	31.6208427912480
2001-07-01	31.5988784268582
2001-10-01	31.5493387689693
2002-01-01	31.7837151261234
2002-04-01	31.8436045828541
2002-07-01	31.7950822329573
2002-10-01	31.7172794002649
2003-01-01	31.2143170945672
2003-04-01	31.4519727201053
2003-07-01	31.6230766221124
2003-10-01	31.6228668573110
2004-01-01	33.7170785164404
2004-04-01	33.7076383209339
2004-07-01	33.9397880311278
2004-10-01	34.1850109711147
2005-01-01	33.9827452024651
2005-04-01	33.7017312554937
2005-07-01	33.4843436093934
2005-10-01	33.2345655098476
2006-01-01	33.3276509443119
2006-04-01	33.3323696550062
2006-07-01	33.2096637715893
2006-10-01	33.1690439737523
2007-01-01	32.7763677146100
2007-04-01	32.4707897163420
2007-07-01	32.1404104374102
2007-10-01	32.3415506857851
2008-01-01	32.2525329047215
2008-04-01	32.4301862048148
2008-07-01	32.7362559654678
2008-10-01	32.6949389646528
2009-01-01	32.8345274209656
2009-04-01	32.7163267002936
2009-07-01	32.6425713595342
2009-10-01	32.5215292836727
2010-01-01	32.8478972380060
2010-04-01	32.8503559387067
2010-07-01	32.8795939472840
2010-10-01	33.0296064879445
2011-01-01	32.9521322543683
2011-04-01	33.1030272199578
2011-07-01	33.2232467923572
2011-10-01	33.1075631802519
2012-01-01	33.3261696967548
2012-04-01	32.9499703518588
2012-07-01	33.0187738038723
2012-10-01	33.0044963968898
2013-01-01	32.8439597138452
2013-04-01	33.0501402799468
2013-07-01	33.1401359757858
2013-10-01	33.2566324263953
2014-01-01	33.5174208232312
2014-04-01	33.5761909507145
2014-07-01	33.5408865295179
2014-10-01	33.6522360969552
2015-01-01	33.5536316148457
2015-04-01	33.6842371105993
2015-07-01	33.6364743631193
2015-10-01	33.5100783845537
2016-01-01	33.3814966145705
2016-04-01	33.1648920664514
2016-07-01	33.0759439032574
2016-10-01	33.2633689265788
2017-01-01	33.3186271191884
2017-04-01	33.2581374690040
2017-07-01	33.2143856633348
2017-10-01	32.9755880941842
2018-01-01	32.9288746776783
2018-04-01	32.8707614115890