Quarter	Percent, Seasonally Adjusted
1999-01-01	61.2680521259598
1999-04-01	61.1552890000080
1999-07-01	61.1777074609082
1999-10-01	61.0728788954454
2000-01-01	61.2159523982519
2000-04-01	61.3182507040631
2000-07-01	61.2503422789143
2000-10-01	61.3497285227039
2001-01-01	61.3572238576505
2001-04-01	61.4881284019990
2001-07-01	61.3575816808928
2001-10-01	61.6235155015884
2002-01-01	61.6331967946217
2002-04-01	61.7231098303724
2002-07-01	61.7124008765683
2002-10-01	61.9080429333522
2003-01-01	62.1463705024520
2003-04-01	62.1985844548403
2003-07-01	62.0466483889756
2003-10-01	61.9702166452795
2004-01-01	59.7180963434258
2004-04-01	59.7396047392207
2004-07-01	59.7852567037779
2004-10-01	59.8588077660849
2005-01-01	60.1648919071781
2005-04-01	60.1415668799473
2005-07-01	60.5281766070546
2005-10-01	60.6616772627796
2006-01-01	60.7954537107514
2006-04-01	61.1142085365722
2006-07-01	61.4040262850307
2006-10-01	61.5227574253878
2007-01-01	61.9499746512272
2007-04-01	62.1033185376789
2007-07-01	62.5537314506953
2007-10-01	62.6308366619725
2008-01-01	62.9829099651020
2008-04-01	63.2684037514139
2008-07-01	63.0008552124911
2008-10-01	63.0110606350444
2009-01-01	62.7571414746122
2009-04-01	62.5214259641741
2009-07-01	62.4070548750556
2009-10-01	62.5549075460669
2010-01-01	62.6770830284609
2010-04-01	62.6836725770336
2010-07-01	62.8960359701067
2010-10-01	63.1946438663992
2011-01-01	63.0472498320203
2011-04-01	63.1365015760486
2011-07-01	63.3609138790385
2011-10-01	63.0496826732109
2012-01-01	63.2999662123902
2012-04-01	63.2449536012557
2012-07-01	63.1157246359560
2012-10-01	63.2393583478924
2013-01-01	63.0462032897560
2013-04-01	63.2557057317293
2013-07-01	63.1662107825286
2013-10-01	62.8726308494122
2014-01-01	62.7697104914294
2014-04-01	62.8278661863113
2014-07-01	62.6892513409508
2014-10-01	62.8134696811793
2015-01-01	62.9649593585034
2015-04-01	62.8230872038284
2015-07-01	63.1650810831257
2015-10-01	63.2539295158770
2016-01-01	63.3774566999786
2016-04-01	63.4167512535136
2016-07-01	63.7124106080994
2016-10-01	63.7920081537888
2017-01-01	63.8427193600398
2017-04-01	64.1711219885125
2017-07-01	64.1913689534896
2017-10-01	64.4866610825219
2018-01-01	64.7622628824246
2018-04-01	64.9297995675532