Quarter	Percent, Seasonally Adjusted
1999-01-01	63.1625527633566
1999-04-01	62.8542246595164
1999-07-01	63.0742266437118
1999-10-01	63.1920216926085
2000-01-01	63.5382784657667
2000-04-01	63.3553348347864
2000-07-01	63.4792504788238
2000-10-01	63.6005728786142
2001-01-01	63.9779259846663
2001-04-01	64.1931592919441
2001-07-01	64.1721207264635
2001-10-01	63.9786368255588
2002-01-01	63.6275985252102
2002-04-01	63.4511377264598
2002-07-01	63.5487136214375
2002-10-01	63.6583278306733
2003-01-01	63.5525399368588
2003-04-01	63.7664569639368
2003-07-01	63.9373477812721
2003-10-01	63.7588365022464
2004-01-01	63.7082945280574
2004-04-01	63.8638460702161
2004-07-01	63.8076011441050
2004-10-01	63.5358010431372
2005-01-01	63.3340697307636
2005-04-01	63.0109680349695
2005-07-01	62.9349483488848
2005-10-01	63.2495987123807
2006-01-01	62.9515716628464
2006-04-01	62.9650312688357
2006-07-01	62.8283835486833
2006-10-01	62.6222050443596
2007-01-01	62.4690690938948
2007-04-01	62.4361085154330
2007-07-01	62.5379345350300
2007-10-01	62.8303422751014
2008-01-01	62.9936046645282
2008-04-01	63.0480833274786
2008-07-01	63.3292131175594
2008-10-01	63.0351906063972
2009-01-01	62.5893960390544
2009-04-01	62.5799020223908
2009-07-01	62.7943605253553
2009-10-01	62.7886816802608
2010-01-01	62.7073955447498
2010-04-01	62.8024616980759
2010-07-01	62.9225039486568
2010-10-01	62.9467907136310
2011-01-01	62.5730996918875
2011-04-01	62.6992289679315
2011-07-01	62.7365215317442
2011-10-01	62.9512332597349
2012-01-01	63.3022183255834
2012-04-01	63.2914561844599
2012-07-01	63.3098377850948
2012-10-01	63.0617988571253
2013-01-01	63.5850039144665
2013-04-01	63.2981714371446
2013-07-01	63.2596752829388
2013-10-01	63.1909825580344
2014-01-01	63.3504791121159
2014-04-01	63.3629281962220
2014-07-01	63.5108266341012
2014-10-01	63.7390156964006
2015-01-01	63.7785096462010
2015-04-01	63.6425495123535
2015-07-01	63.8879978152924
2015-10-01	64.1676005540354
2016-01-01	64.2190517366663
2016-04-01	64.4889148083356
2016-07-01	64.4674523851301
2016-10-01	64.4789245385693
2017-01-01	64.4640421316162
2017-04-01	64.4212988878496
2017-07-01	64.4679444744038
2017-10-01	64.3120204562482
2018-01-01	64.2265544415986
2018-04-01	64.2270561379564