Quarter	Percent, Seasonally Adjusted
1998-04-01	59.0774543660582
1999-04-01	65.4131618010886
2000-04-01	63.4032059186190
2001-04-01	63.2209188660802
2002-04-01	65.4318017801299
2003-04-01	62.3036649214660
2004-04-01	61.0889462567472
2005-04-01	58.8207985143918
2006-04-01	62.0165745856354
2007-04-01	59.7035347776511
2008-04-01	61.2185251798561
2009-04-01	62.3636768306254
2010-01-01	61.1056746493489
2010-04-01	60.4795517620697
2010-07-01	62.2985388733525
2010-10-01	62.1739198904819
2011-01-01	62.3068845251498
2011-04-01	63.3584951409711
2011-07-01	62.5013642281094
2011-10-01	61.9699224716911
2012-01-01	61.9276477091038
2012-04-01	60.7500963760912
2012-07-01	61.4842963571990
2012-10-01	59.5509950255077
2013-01-01	60.9815994878343
2013-04-01	60.4025985593270
2013-07-01	60.9700470979625
2013-10-01	62.3500312121857
2014-01-01	61.0412500864042
2014-04-01	61.1272021064299
2014-07-01	60.2253431196334
2014-10-01	64.2285132722992
2015-01-01	63.0399202538370
2015-04-01	62.2848187861691
2015-07-01	61.9711984229429
2015-10-01	62.9936600637759
2016-01-01	63.4888414993858
2016-04-01	63.1537239551525
2016-07-01	62.7875283739435
2016-10-01	63.2173867852359
2017-01-01	63.4217371963977
2017-04-01	61.7080580096448
2017-07-01	62.0562340785785
2017-10-01	62.2037513334314
2018-01-01	61.3186996238297
2018-04-01	61.0828829873573