Quarter	Percent, Seasonally Adjusted
1998-04-01	64.0000000000000
1999-04-01	69.4000000000000
2000-04-01	66.1000000000000
2001-04-01	66.9000000000000
2002-04-01	68.1000000000000
2003-04-01	68.3000000000000
2004-04-01	66.0000000000000
2005-04-01	64.7000000000000
2006-04-01	67.0000000000000
2007-04-01	64.5000000000000
2008-04-01	66.1000000000000
2009-04-01	68.5000000000000
2010-01-01	67.6452904565779
2010-04-01	66.6787764418392
2010-07-01	67.8664291556828
2010-10-01	67.2596148836158
2011-01-01	67.4587716911073
2011-04-01	68.4062054252902
2011-07-01	67.9789068375942
2011-10-01	67.7236984616330
2012-01-01	67.3023416627965
2012-04-01	65.9988583330293
2012-07-01	66.6367696721976
2012-10-01	64.9761666506455
2013-01-01	66.5689165089454
2013-04-01	66.4791812137319
2013-07-01	66.9461443288141
2013-10-01	68.2439642848383
2014-01-01	67.1307026863766
2014-04-01	67.1439924078132
2014-07-01	66.1820740510993
2014-10-01	69.2848127425626
2015-01-01	68.3233044548363
2015-04-01	67.6943429953652
2015-07-01	67.8601598012504
2015-10-01	69.3658534264388
2016-01-01	69.2975713105330
2016-04-01	69.1017727057394
2016-07-01	68.7088567684924
2016-10-01	68.7345671745756
2017-01-01	68.8004368321630
2017-04-01	67.3182245771282
2017-07-01	67.5221785819745
2017-10-01	67.3951056406977
2018-01-01	66.6938035628742
2018-04-01	66.1088499389036