Quarter	Percent, Seasonally Adjusted
1998-04-01	58.2000000000000
1999-04-01	58.2000000000000
2000-04-01	57.6000000000000
2001-04-01	58.8000000000000
2002-04-01	59.3000000000000
2003-04-01	59.5000000000000
2004-04-01	59.1000000000000
2005-04-01	59.3000000000000
2006-04-01	59.8000000000000
2007-04-01	59.9000000000000
2008-04-01	61.3000000000000
2009-04-01	61.6000000000000
2010-01-01	59.9664941603976
2010-04-01	59.8722633707952
2010-07-01	60.1647374548331
2010-10-01	59.9040066692530
2011-01-01	60.3863653278874
2011-04-01	60.4205556879980
2011-07-01	60.3467640891917
2011-10-01	60.9950635258727
2012-01-01	60.7780386551905
2012-04-01	60.7303657672676
2012-07-01	61.0549178560939
2012-10-01	60.7700390076374
2013-01-01	60.9538999044220
2013-04-01	61.0324371601151
2013-07-01	61.1777715033803
2013-10-01	61.4060869719740
2014-01-01	61.1823481156759
2014-04-01	61.6778985864091
2014-07-01	61.7954614463685
2014-10-01	62.9497128264166
2015-01-01	62.1848013115153
2015-04-01	62.0096176327363
2015-07-01	62.1188747460107
2015-10-01	62.8150313080311
2016-01-01	63.1146018663463
2016-04-01	62.6067743631380
2016-07-01	62.5667858211996
2016-10-01	63.0570764245364
2017-01-01	62.8733084533045
2017-04-01	62.4705035510574
2017-07-01	62.4137863683712
2017-10-01	62.6866510946212
2018-01-01	62.9762592463300
2018-04-01	62.6890879713538