Quarter	Percent, Seasonally Adjusted
1998-01-01	75.1417776639872
1998-04-01	75.3553935408976
1998-07-01	75.9262658445233
1998-10-01	76.1225241777139
1999-01-01	76.9727978567231
1999-04-01	77.1643784877015
1999-07-01	77.0941932359693
1999-10-01	77.2714184414064
2000-01-01	76.5040186393490
2000-04-01	77.1769554083780
2000-07-01	78.0620995634157
2000-10-01	77.6948009151424
2001-01-01	77.3933915478607
2001-04-01	78.4042440126681
2001-07-01	78.0874572705676
2001-10-01	78.7016667272313
2002-01-01	79.2501076139012
2002-04-01	79.2885950171510
2002-07-01	79.2960331333570
2002-10-01	79.0926448542320
2003-01-01	79.2724683781261
2003-04-01	79.1034080179221
2003-07-01	78.3374617483398
2003-10-01	78.7375890379146
2004-01-01	78.0206199066990
2004-04-01	77.8621078873308
2004-07-01	78.4128409551446
2004-10-01	78.3453932007337
2005-01-01	79.4412825944639
2005-04-01	78.7899083660424
2005-07-01	78.8430236016630
2005-10-01	78.7303920382541
2006-01-01	79.6241035240585
2006-04-01	79.7001822566366
2006-07-01	79.5845457625336
2006-10-01	79.6265458724159
2007-01-01	80.6080323405759
2007-04-01	80.4875760492633
2007-07-01	80.4000435907356
2007-10-01	81.0337360115268
2008-01-01	81.2105687097190
2008-04-01	81.2262282968495
2008-07-01	81.1738784727332
2008-10-01	81.1954835810518
2009-01-01	80.7461290431961
2009-04-01	80.4834438835951
2009-07-01	80.4105670249573
2009-10-01	80.2441650773713
2010-01-01	79.6193832060628
2010-04-01	79.3161823017090
2010-07-01	78.8482760857762
2010-10-01	78.9373578404524
2011-01-01	78.9402698739474
2011-04-01	79.0864415420591
2011-07-01	79.8597127355165
2011-10-01	80.4689298608876
2012-01-01	79.7559752792226
2012-04-01	79.5716323442148
2012-07-01	79.5359951406186
2012-10-01	78.7434056977943
2013-01-01	78.3602605147646
2013-04-01	78.4432128658923
2013-07-01	77.9249970307092
2013-10-01	77.6335822581625
2014-01-01	78.0165218293701
2014-04-01	78.1115078092902
2014-07-01	78.6520867983395
2014-10-01	77.7277475706838
2015-01-01	77.4595039137015
2015-04-01	77.1245731994128
2015-07-01	77.3099990677274
2015-10-01	77.3466990156838
2016-01-01	76.8416447165487
2016-04-01	76.4190877130695
2016-07-01	76.9296439609002
2016-10-01	76.5577830796864
2017-01-01	77.5479172036779
2017-04-01	77.6851817968853
2017-07-01	77.1961491958361
2017-10-01	79.0089137930694
2018-01-01	78.6043562950886
2018-04-01	79.6560184267839