Quarter	Percent, Seasonally Adjusted
1998-01-01	57.4300142084472
1998-04-01	57.0437722100524
1998-07-01	56.6145893982058
1998-10-01	56.3809477313370
1999-01-01	55.8698782640722
1999-04-01	55.4638477409304
1999-07-01	55.2227484843089
1999-10-01	55.1487393942118
2000-01-01	54.9138607932548
2000-04-01	54.7883700385037
2000-07-01	54.8627355384070
2000-10-01	54.7998687216989
2001-01-01	55.0962741561902
2001-04-01	54.8585302584508
2001-07-01	54.7828311653188
2001-10-01	54.8173383456398
2002-01-01	55.0334979985394
2002-04-01	55.2905344928019
2002-07-01	55.3253605766289
2002-10-01	55.3001404320805
2003-01-01	55.0931850540703
2003-04-01	54.7748419281527
2003-07-01	54.4182735565834
2003-10-01	54.2473102645921
2004-01-01	54.1424329493028
2004-04-01	54.1246240250200
2004-07-01	54.1819153190430
2004-10-01	54.2681259568919
2005-01-01	54.4068397584346
2005-04-01	54.5524709646111
2005-07-01	54.8694602455823
2005-10-01	54.8524225844447
2006-01-01	54.9410484177500
2006-04-01	55.0397902701185
2006-07-01	55.0216889854516
2006-10-01	55.1197508566205
2007-01-01	55.4685949751265
2007-04-01	55.6180377999586
2007-07-01	55.7151410607783
2007-10-01	55.7848821786843
2008-01-01	55.9084895645316
2008-04-01	56.0494073298387
2008-07-01	55.9048747875167
2008-10-01	55.8697696125984
2009-01-01	55.3320865881490
2009-04-01	54.8977541954686
2009-07-01	54.4730126086360
2009-10-01	54.3728755202228
2010-01-01	53.9724708499140
2010-04-01	54.1132980167752
2010-07-01	54.3250477138744
2010-10-01	54.3397507458471
2011-01-01	54.2873516706835
2011-04-01	54.3572706741552
2011-07-01	54.4317464092567
2011-10-01	54.3336834181002
2012-01-01	54.3029955852321
2012-04-01	54.4793442529743
2012-07-01	54.7071203504486
2012-10-01	54.7035873341591
2013-01-01	54.8723765303026
2013-04-01	55.2507047722630
2013-07-01	55.1933512620032
2013-10-01	55.3001382594657
2014-01-01	55.4346085416575
2014-04-01	55.5060382073982
2014-07-01	55.7849277969930
2014-10-01	56.0214848178262
2015-01-01	56.0902213430820
2015-04-01	56.3932307596728
2015-07-01	56.5225193018541
2015-10-01	56.6924544285682
2016-01-01	57.2229024726594
2016-04-01	57.4352256695977
2016-07-01	57.5830797745101
2016-10-01	57.9622809651512
2017-01-01	58.1111258065740
2017-04-01	58.2520286852240
2017-07-01	58.7535634340562
2017-10-01	58.7967474048114
2018-01-01	59.0266163945897
2018-04-01	59.1955124564304