Quarter	Percent, Seasonally Adjusted
1999-01-01	43.4673980739002
1999-04-01	43.4910060086572
1999-07-01	43.5220320601174
1999-10-01	43.0264107310562
2000-01-01	42.6737281028303
2000-04-01	43.9423146883133
2000-07-01	43.8687367093489
2000-10-01	43.1548420860127
2001-01-01	42.4471734474063
2001-04-01	42.1322132861231
2001-07-01	42.1249325590767
2001-10-01	42.6846260392414
2002-01-01	42.8303945558039
2002-04-01	42.8597065081178
2002-07-01	43.6381059902517
2002-10-01	43.4631041858032
2003-01-01	43.4959789896644
2003-04-01	43.2377458961276
2003-07-01	43.4073063795331
2003-10-01	44.4456027619755
2004-01-01	44.3469885437311
2004-04-01	44.5480554240592
2004-07-01	44.0672596123293
2004-10-01	45.0061605016704
2005-01-01	45.6610624754259
2005-04-01	45.9438980207998
2005-07-01	45.4515124853733
2005-10-01	45.7126426543526
2006-01-01	45.3991021846497
2006-04-01	45.6804917262064
2006-07-01	46.0271994142843
2006-10-01	46.1753445050972
2007-01-01	46.2549479252617
2007-04-01	46.6551517686945
2007-07-01	45.9735431614845
2007-10-01	47.2286650472354
2008-01-01	47.1478153700164
2008-04-01	46.3925310075316
2008-07-01	47.4496892742840
2008-10-01	46.6519426523594
2009-01-01	47.0648082820980
2009-04-01	46.8629611218008
2009-07-01	46.8786991290213
2009-10-01	46.9935340658343
2010-01-01	48.1991390603661
2010-04-01	46.9327720623592
2010-07-01	47.5436850892824
2010-10-01	48.1686000489234
2011-01-01	46.4138563899914
2011-04-01	47.4836127244173
2011-07-01	47.2678733928386
2011-10-01	46.9620283456123
2012-01-01	46.5819851122098
2012-04-01	46.8433055821775
2012-07-01	47.3492173209147
2012-10-01	47.6208586448476
2013-01-01	47.3029861500405
2013-04-01	47.6023378935921
2013-07-01	48.5831458863857
2013-10-01	47.5849644046316
2014-01-01	47.5702161298418
2014-04-01	48.1681527945246
2014-07-01	48.3697006750793
2014-10-01	48.2020522618279
2015-01-01	48.3398125835345
2015-04-01	47.6134316023926
2015-07-01	47.7550537967370
2015-10-01	48.3257380564158
2016-01-01	47.6158533680661
2016-04-01	47.5634628627452
2016-07-01	47.3647057246221
2016-10-01	48.5579768780367
2017-01-01	48.3938680533020
2017-04-01	48.7418055854926
2017-07-01	48.7108584034762
2017-10-01	49.0333076042800
2018-01-01	49.1583475510381
2018-04-01	48.9925940613750