Quarter	Percent, Seasonally Adjusted
1999-01-01	55.8682730833120
1999-04-01	55.9974081681033
1999-07-01	56.4452901483700
1999-10-01	56.9109522035306
2000-01-01	57.1212014351713
2000-04-01	57.4494455877973
2000-07-01	57.7513953312431
2000-10-01	58.0040209864108
2001-01-01	56.5126509813053
2001-04-01	56.6854298311959
2001-07-01	57.0348122838329
2001-10-01	57.3313620413862
2002-01-01	58.1995062823083
2002-04-01	58.6993600808584
2002-07-01	59.0774745014593
2002-10-01	59.3020898745988
2003-01-01	59.6742710210898
2003-04-01	60.0663091277466
2003-07-01	60.5042981633400
2003-10-01	60.7515305394474
2004-01-01	60.8005090821483
2004-04-01	61.0453023489455
2004-07-01	61.4006295708555
2004-10-01	61.7975371937955
2005-01-01	61.9820495074291
2005-04-01	62.4393704389600
2005-07-01	62.4264218627272
2005-10-01	62.8530024355420
2006-01-01	63.2487165237578
2006-04-01	63.4987763211786
2006-07-01	63.6060403651558
2006-10-01	63.9892956642765
2007-01-01	64.0960734002274
2007-04-01	64.3670057557719
2007-07-01	64.6241562117824
2007-10-01	64.7709811443504
2008-01-01	65.0732552956879
2008-04-01	65.3530399708605
2008-07-01	65.4109164821160
2008-10-01	65.7958142522845
2009-01-01	65.9095280194642
2009-04-01	65.8019196917601
2009-07-01	65.5050041687329
2009-10-01	65.6582763298724
2010-01-01	65.9139327177594
2010-04-01	66.1610221370691
2010-07-01	66.0895955006295
2010-10-01	66.0924523209582
2011-01-01	66.1057200652238
2011-04-01	66.3722803077333
2011-07-01	66.3145608104079
2011-10-01	66.3400171141936
2012-01-01	66.4533840025808
2012-04-01	66.5265944123802
2012-07-01	66.5475258202870
2012-10-01	66.3974206889206
2013-01-01	66.4381414798608
2013-04-01	66.0953124605737
2013-07-01	66.0873549166742
2013-10-01	65.9932609645559
2014-01-01	65.6439154702804
2014-04-01	65.6204365728874
2014-07-01	65.3981815121730
2014-10-01	65.7265064348986
2015-01-01	65.4817630618801
2015-04-01	65.7923876234181
2015-07-01	65.3919816901866
2015-10-01	65.5413507556596
2016-01-01	65.5235612592919
2016-04-01	65.5212953960213
2016-07-01	65.2955440697905
2016-10-01	65.0718848066625
2017-01-01	64.9515005738086
2017-04-01	64.8200215647194
2017-07-01	64.8375155582774
2017-10-01	64.8944066007585
2018-01-01	64.6693608035567
2018-04-01	64.8818071057366
2018-07-01	64.7478204393002