Quarter	Percent, Seasonally Adjusted
1998-01-01	51.6582194221592
1998-04-01	51.9743173810429
1998-07-01	52.1199438969444
1998-10-01	52.3244900190089
1999-01-01	52.3582646652763
1999-04-01	52.4645532583052
1999-07-01	52.5380841649145
1999-10-01	52.4907300928288
2000-01-01	52.5742045498356
2000-04-01	52.8057727132928
2000-07-01	53.0410673762518
2000-10-01	53.2131279804006
2001-01-01	53.2971892222267
2001-04-01	53.1255257389222
2001-07-01	53.4219279172107
2001-10-01	53.3947969313587
2002-01-01	53.6097068938612
2002-04-01	53.7037214877038
2002-07-01	53.8342787522324
2002-10-01	53.7862266733874
2003-01-01	53.9379826504124
2003-04-01	54.1484690371169
2003-07-01	54.2513360178723
2003-10-01	53.9876093359268
2004-01-01	54.9923412172648
2004-04-01	54.9770087697162
2004-07-01	54.9310494876311
2004-10-01	55.0520269998571
2005-01-01	54.8025761479341
2005-04-01	54.5818158501299
2005-07-01	54.3671590956025
2005-10-01	54.7399709065068
2006-01-01	54.9122290563126
2006-04-01	54.8751101946367
2006-07-01	54.5804621116739
2006-10-01	54.6676959825387
2007-01-01	54.2196826156252
2007-04-01	54.3448461296350
2007-07-01	54.8374679758087
2007-10-01	54.8238568429567
2008-01-01	55.0514687640038
2008-04-01	55.2961380787299
2008-07-01	55.0963128882435
2008-10-01	54.7839377790955
2009-01-01	54.6317072484638
2009-04-01	54.4806384383935
2009-07-01	54.4587173784382
2009-10-01	54.3428164430721
2010-01-01	54.4197968477309
2010-04-01	54.4102903684116
2010-07-01	54.0617160418664
2010-10-01	54.2885794112396
2011-01-01	54.2660533190406
2011-04-01	54.1180107611707
2011-07-01	54.3587538585044
2011-10-01	54.7234706891469
2012-01-01	55.3011293570029
2012-04-01	55.6514440173152
2012-07-01	55.5612293482291
2012-10-01	55.6156507854739
2013-01-01	55.4865131613132
2013-04-01	55.2464143201691
2013-07-01	55.2410949964413
2013-10-01	55.3323619318493
2014-01-01	55.6368261096425
2014-04-01	55.4728972912694
2014-07-01	55.8789083803158
2014-10-01	56.1021376095334
2015-01-01	55.7897951252956
2015-04-01	55.9089389834865
2015-07-01	55.8151059765365
2015-10-01	55.9317222756876
2016-01-01	56.0944197075367
2016-04-01	56.7458082960555
2016-07-01	56.7286793846418
2016-10-01	56.9160442270826
2017-01-01	57.0986542941560
2017-04-01	56.8814579368086
2017-07-01	57.2913400368988
2017-10-01	57.1603564683434
2018-01-01	57.2881714673321
2018-04-01	57.7196740520385