Quarter	Percent, Seasonally Adjusted
1998-01-01	48.2655158588601
1998-04-01	48.7134971004388
1998-07-01	48.4134935833000
1998-10-01	48.9883087330319
1999-01-01	49.2612856121633
1999-04-01	49.4656399703894
1999-07-01	49.6566370705514
1999-10-01	49.7489793513770
2000-01-01	50.1063512299669
2000-04-01	50.0834369920083
2000-07-01	50.4248862852304
2000-10-01	50.5923144125568
2001-01-01	50.8094527796383
2001-04-01	50.6628480095806
2001-07-01	50.8060088825901
2001-10-01	51.1349023509570
2002-01-01	50.9861485686125
2002-04-01	51.0611876492781
2002-07-01	51.0950942171257
2002-10-01	50.4842669850176
2003-01-01	50.9987448770566
2003-04-01	50.6377761186217
2003-07-01	50.5648985739243
2003-10-01	50.3938176047579
2004-01-01	50.2682505605632
2004-04-01	50.2495292109049
2004-07-01	50.3258377615111
2004-10-01	50.6184756783203
2005-01-01	50.4096526085352
2005-04-01	50.5746641296702
2005-07-01	50.5230850187632
2005-10-01	50.5764535561379
2006-01-01	50.4421631489611
2006-04-01	50.7510062019225
2006-07-01	50.7633072558831
2006-10-01	50.4351085547934
2007-01-01	50.5096916618386
2007-04-01	50.3423656054521
2007-07-01	50.9768871517636
2007-10-01	50.7884341568187
2008-01-01	50.9123699900752
2008-04-01	51.2161440685467
2008-07-01	50.9500508011711
2008-10-01	50.7081413627888
2009-01-01	50.5827054542121
2009-04-01	50.0087754035960
2009-07-01	49.6649329760066
2009-10-01	49.8845584957826
2010-01-01	49.9083643096674
2010-04-01	49.3879696043775
2010-07-01	48.8827559969242
2010-10-01	48.7820793822352
2011-01-01	48.0551519526840
2011-04-01	48.0709420775839
2011-07-01	47.2750451641019
2011-10-01	46.6544242025219
2012-01-01	46.7448432525607
2012-04-01	46.5268511143759
2012-07-01	46.3323546485105
2012-10-01	45.2844961369761
2013-01-01	44.8429703759065
2013-04-01	45.0406479030999
2013-07-01	45.4274780237346
2013-10-01	45.8262269372811
2014-01-01	45.8813564126990
2014-04-01	45.8833952612318
2014-07-01	46.4420306020280
2014-10-01	46.2330399550012
2015-01-01	46.4313681389008
2015-04-01	47.2658085856467
2015-07-01	47.0070049056204
2015-10-01	46.8938484342923
2016-01-01	47.1215409506682
2016-04-01	47.1487432471821
2016-07-01	47.7644807802859
2016-10-01	48.0940718679932
2017-01-01	48.3429924686578
2017-04-01	48.8243982812198
2017-07-01	49.2653946516696
2017-10-01	49.6275179565086
2018-01-01	50.0294339528481
2018-04-01	50.4104611816740