Quarter	Percent, Seasonally Adjusted
1998-04-01	61.9279418814766
1999-04-01	62.2983945038392
2000-04-01	62.0965678570123
2001-04-01	63.2360415305308
2002-04-01	63.9514855748529
2003-04-01	63.2565251404594
2004-04-01	62.7539503386004
2005-04-01	62.9381894589389
2006-04-01	63.7226937526089
2007-04-01	63.8881234499862
2008-04-01	65.7435792628926
2009-04-01	65.7349478641103
2010-01-01	63.6327778710819
2010-04-01	63.4238387575274
2010-07-01	63.6732050606095
2010-10-01	63.9574853041106
2011-01-01	64.4370584029763
2011-04-01	64.8370043955607
2011-07-01	64.2094678703484
2011-10-01	65.0560098646164
2012-01-01	65.0397514941108
2012-04-01	64.7400199158127
2012-07-01	65.2792123544747
2012-10-01	64.7046357789661
2013-01-01	64.8261652354424
2013-04-01	64.8794518614826
2013-07-01	65.3077747957801
2013-10-01	65.6582283736778
2014-01-01	65.1736928281894
2014-04-01	65.6365355904448
2014-07-01	65.7803854613508
2014-10-01	67.1779367643037
2015-01-01	66.7936021288569
2015-04-01	66.2461376316770
2015-07-01	65.8380270765903
2015-10-01	66.5130795704164
2016-01-01	67.2748780796921
2016-04-01	66.8383691106170
2016-07-01	66.7717438923916
2016-10-01	67.1665152310766
2017-01-01	66.9136762526477
2017-04-01	66.4082177239904
2017-07-01	66.5482194574967
2017-10-01	66.9339883045786
2018-01-01	66.8852710929608
2018-04-01	66.6474359821183