Quarter	Percent, Seasonally Adjusted
1998-01-01	60.3108581352210
1998-04-01	60.7208593553920
1998-07-01	60.8787979953938
1998-10-01	60.5011648959665
1999-01-01	60.2527537043667
1999-04-01	59.9200493135899
1999-07-01	59.6476099448796
1999-10-01	59.3706026894042
2000-01-01	59.7212695984324
2000-04-01	59.8850849713464
2000-07-01	59.9632884596916
2000-10-01	59.9595855417239
2001-01-01	59.5706113737137
2001-04-01	59.4731490040620
2001-07-01	59.4351144440188
2001-10-01	59.2543482508154
2002-01-01	59.2522916877071
2002-04-01	59.7495830189792
2002-07-01	59.8525430874129
2002-10-01	60.1170685621764
2003-01-01	60.4224101602681
2003-04-01	60.2722682881106
2003-07-01	60.3431393329390
2003-10-01	60.3128579775297
2004-01-01	59.8792980194626
2004-04-01	60.1669560041554
2004-07-01	60.0723230366072
2004-10-01	60.1903721348164
2005-01-01	60.2920292267011
2005-04-01	60.3207115344961
2005-07-01	60.1447936181159
2005-10-01	60.4218565466766
2006-01-01	60.6790387378883
2006-04-01	60.5633285791951
2006-07-01	60.7377482833543
2006-10-01	60.7923653367684
2007-01-01	60.7108063263150
2007-04-01	60.6619828581412
2007-07-01	60.8650185749711
2007-10-01	60.9428867186077
2008-01-01	61.0001472980531
2008-04-01	61.0639974647584
2008-07-01	60.8351751000152
2008-10-01	60.6387669730790
2009-01-01	60.0029055848595
2009-04-01	59.7636421546232
2009-07-01	59.5177998336477
2009-10-01	58.9972354653056
2010-01-01	58.5086276608776
2010-04-01	57.5123245081546
2010-07-01	56.7706636753630
2010-10-01	55.9188638496406
2011-01-01	54.6815333500365
2011-04-01	53.6081741009203
2011-07-01	52.1439811207365
2011-10-01	50.6412762778689
2012-01-01	49.6556603940703
2012-04-01	48.3046655167294
2012-07-01	47.3624870274472
2012-10-01	46.9910233160661
2013-01-01	46.2331918276044
2013-04-01	46.0930135758817
2013-07-01	45.8703204065800
2013-10-01	45.8290423320647
2014-01-01	45.9550471429642
2014-04-01	45.8442235143299
2014-07-01	46.0012686621634
2014-10-01	45.9456491278799
2015-01-01	46.1156746550119
2015-04-01	46.5578479759734
2015-07-01	47.0207322642766
2015-10-01	47.5167293892917
2016-01-01	47.6443677208345
2016-04-01	47.9016829388508
2016-07-01	48.0448380180835
2016-10-01	48.1602768144793
2017-01-01	48.5929231359564
2017-04-01	49.1019154589551
2017-07-01	49.6708734230235
2017-10-01	49.7913719062647
2018-01-01	50.1334791345842
2018-04-01	50.6222291573101