Quarter	Percent, Seasonally Adjusted
1999-01-01	73.1100222409944
1999-04-01	73.0212447090811
1999-07-01	72.4335936466269
1999-10-01	70.8394518522757
2000-01-01	71.6895541380381
2000-04-01	71.3918100804498
2000-07-01	69.0027597234500
2000-10-01	70.7525011905452
2001-01-01	69.2148514160917
2001-04-01	67.2138463172376
2001-07-01	69.0418234826861
2001-10-01	66.6366149476553
2002-01-01	67.7126080075913
2002-04-01	68.8522530976104
2002-07-01	68.3298292063836
2002-10-01	69.4434299194960
2003-01-01	64.5865375279314
2003-04-01	65.8510196817463
2003-07-01	66.8605323800278
2003-10-01	65.1479081079216
2004-01-01	68.1659032772122
2004-04-01	66.5951714296408
2004-07-01	69.2693403716225
2004-10-01	67.3853112078413
2005-01-01	68.2750094756990
2005-04-01	67.3214767276048
2005-07-01	67.4457085253212
2005-10-01	69.4867712607237
2006-01-01	68.6796506744353
2006-04-01	68.8585507993630
2006-07-01	71.3206540919288
2006-10-01	70.8821576173578
2007-01-01	72.3114317789982
2007-04-01	71.8560295134633
2007-07-01	69.4602645702277
2007-10-01	68.8343058036146
2008-01-01	69.3453200350180
2008-04-01	72.5869155179247
2008-07-01	72.6603837758964
2008-10-01	73.9812803286399
2009-01-01	72.8937626837224
2009-04-01	71.5871454947062
2009-07-01	70.5849901879999
2009-10-01	68.5960256374540
2010-01-01	68.1069864587500
2010-04-01	68.7404179260434
2010-07-01	66.6820656373429
2010-10-01	66.4760701154372
2011-01-01	68.0855262086442
2011-04-01	67.5107777917782
2011-07-01	67.2681711346770
2011-10-01	65.5153597403332
2012-01-01	64.7932269127939
2012-04-01	65.4054916497602
2012-07-01	63.3963134637376
2012-10-01	62.6301447837787
2013-01-01	62.9180139084589
2013-04-01	61.6641186090145
2013-07-01	61.7731078207122
2013-10-01	60.5301381002520
2014-01-01	60.6421054533042
2014-04-01	59.7902968151760
2014-07-01	62.1590572114576
2014-10-01	63.4237947854490
2015-01-01	62.2361937602718
2015-04-01	61.8461892347952
2015-07-01	61.7925691733697
2015-10-01	62.5611151615478
2016-01-01	66.1977735200846
2016-04-01	66.6217709508512
2016-07-01	66.1605187312006
2016-10-01	65.6243667029581
2017-01-01	64.1328054512321
2017-04-01	62.7706440546762
2017-07-01	63.4169871010711
2017-10-01	62.6873228397975
2018-01-01	63.3919428101008
2018-04-01	63.6921199942360