Quarter	Percent, Seasonally Adjusted
2001-01-01	66.6219021004190
2001-04-01	66.6137541185469
2001-07-01	66.6885364297769
2001-10-01	66.6960838165457
2002-01-01	66.6137783474573
2002-04-01	66.3914789345555
2002-07-01	66.2791681729940
2002-10-01	66.2521747705990
2003-01-01	66.0798311445989
2003-04-01	66.0257629173653
2003-07-01	65.6530467665454
2003-10-01	65.4296207824140
2004-01-01	65.2611953027405
2004-04-01	64.9480892105144
2004-07-01	64.9349052905293
2004-10-01	64.8267485893089
2005-01-01	64.6881465485901
2005-04-01	65.2365247782114
2005-07-01	65.0483131424632
2005-10-01	65.5020070039783
2006-01-01	65.5284486106940
2006-04-01	65.6554211272834
2006-07-01	66.0806155322256
2006-10-01	66.2185285154116
2007-01-01	66.5257403030884
2007-04-01	66.6554840573805
2007-07-01	66.9935236888435
2007-10-01	67.0114901384998
2008-01-01	67.0739001581119
2008-04-01	67.0809841245258
2008-07-01	66.8325659056182
2008-10-01	66.2952514536819
2009-01-01	65.5595544302146
2009-04-01	64.9680489503911
2009-07-01	64.2458329766541
2009-10-01	64.1558675771394
2010-01-01	64.1227936656901
2010-04-01	64.3856398546754
2010-07-01	64.5706172855706
2010-10-01	64.7584417947700
2011-01-01	65.2582550008127
2011-04-01	65.4008943359964
2011-07-01	65.4494865701560
2011-10-01	65.4913591188310
2012-01-01	65.4151047628165
2012-04-01	65.4923950353769
2012-07-01	65.4443439289106
2012-10-01	65.4883954625936
2013-01-01	65.5841451047858
2013-04-01	65.6623537900167
2013-07-01	65.7705835761609
2013-10-01	65.9573790388497
2014-01-01	65.9291130036288
2014-04-01	66.1248055043713
2014-07-01	66.5374340474486
2014-10-01	66.3345354950171
2015-01-01	66.5211422445397
2015-04-01	66.4558725637893
2015-07-01	66.7276153331597
2015-10-01	66.8962225384943
2016-01-01	66.8897502890378
2016-04-01	67.1464058072914
2016-07-01	66.9065292946279
2016-10-01	67.2695446602737
2017-01-01	67.6352927191941
2017-04-01	67.6978819228651
2017-07-01	67.9824495139479
2017-10-01	68.0344970646077
2018-01-01	68.2520216409487
2018-04-01	68.2935955911383