Quarter	Percent, Seasonally Adjusted
1998-01-01	40.0291782163778
1998-04-01	40.3852616684940
1998-07-01	40.3978810430121
1998-10-01	40.6385811445617
1999-01-01	42.0228999594915
1999-04-01	40.4625837355065
1999-07-01	40.6508330926540
1999-10-01	40.6665256251402
2000-01-01	40.7354468842388
2000-04-01	41.0001707422730
2000-07-01	40.7987701300716
2000-10-01	39.5626647932219
2001-01-01	40.4740388332237
2001-04-01	40.0116470074415
2001-07-01	39.9090276355500
2001-10-01	40.1175205243481
2002-01-01	40.4401937809794
2002-04-01	40.9861060017312
2002-07-01	41.6289363601873
2002-10-01	42.1363294025383
2003-01-01	42.1894073663642
2003-04-01	42.8788815422634
2003-07-01	43.4036784395257
2003-10-01	44.1093625200532
2004-01-01	40.9997431623268
2004-04-01	41.6878282499176
2004-07-01	41.7826330028594
2004-10-01	42.4091125798302
2005-01-01	42.7216510994543
2005-04-01	43.5371538434540
2005-07-01	44.0980081181489
2005-10-01	44.0898616925408
2006-01-01	44.1218099170234
2006-04-01	44.2686033170714
2006-07-01	44.2541478824224
2006-10-01	44.0398628248238
2007-01-01	43.8862528211947
2007-04-01	43.8445810842474
2007-07-01	44.3165974648819
2007-10-01	44.5459705798735
2008-01-01	44.3413201305885
2008-04-01	44.4819334863787
2008-07-01	44.3329895724802
2008-10-01	44.4617651887845
2009-01-01	43.9251878671835
2009-04-01	44.2844918343223
2009-07-01	44.8328247925234
2009-10-01	44.5336073050684
2010-01-01	45.1899744329847
2010-04-01	45.0419267853190
2010-07-01	45.2862746173874
2010-10-01	45.2225796160546
2011-01-01	44.3082311728130
2011-04-01	44.0964875512146
2011-07-01	42.3041795769171
2011-10-01	41.6693529852445
2012-01-01	41.7568867613733
2012-04-01	41.8473731876655
2012-07-01	42.2256423251181
2012-10-01	42.6703092281632
2013-01-01	42.1258389303984
2013-04-01	42.6216045869327
2013-07-01	42.7919630572443
2013-10-01	42.2107553910458
2014-01-01	42.1786753015132
2014-04-01	41.4007205041959
2014-07-01	40.6665908714010
2014-10-01	40.1805454043525
2015-01-01	40.4374073677400
2015-04-01	40.9652079533323
2015-07-01	41.9975118569227
2015-10-01	43.0494840891167
2016-01-01	43.9216125298342
2016-04-01	44.2101179038423
2016-07-01	45.5824412970379
2016-10-01	45.7550549146640
2017-01-01	46.1581360054015
2017-04-01	46.3739678850131
2017-07-01	47.3110695124793
2017-10-01	47.1180608960440
2018-01-01	47.3211239544094
2018-04-01	48.5060039438795