Quarter	Percent, Seasonally Adjusted
1999-04-01	68.4889877831034
1999-07-01	68.6917784258014
1999-10-01	68.8420501494189
2000-01-01	68.2333346023354
2000-04-01	68.6449535161648
2000-07-01	67.8056945725980
2000-10-01	67.2381495968749
2001-01-01	67.9063130923506
2001-04-01	67.4049876683388
2001-07-01	68.4344292297101
2001-10-01	67.9993424525579
2002-01-01	67.3926057526521
2002-04-01	67.4207436311793
2002-07-01	66.2033955575604
2002-10-01	66.6865440493728
2003-01-01	66.7956803926576
2003-04-01	65.9748423467062
2003-07-01	66.1500773877750
2003-10-01	66.1225622035805
2004-01-01	65.9525823609195
2004-04-01	65.8572009016457
2004-07-01	65.6999391698310
2004-10-01	65.4812289354657
2005-01-01	65.8462978729982
2005-04-01	65.0659969074676
2005-07-01	64.6475672296907
2005-10-01	65.1581073430448
2006-01-01	64.4446742099753
2006-04-01	64.8909978944039
2006-07-01	65.7523177411334
2006-10-01	64.4371710542083
2007-01-01	64.7755622493869
2007-04-01	64.1826921955066
2007-07-01	63.5751938210978
2007-10-01	64.1301277941007
2008-01-01	64.2662625092008
2008-04-01	64.1215623622649
2008-07-01	64.6103673240337
2008-10-01	64.2307404371705
2009-01-01	62.7388657990353
2009-04-01	62.1198954420015
2009-07-01	60.6983015019033
2009-10-01	59.6489026445687
2010-01-01	60.1612688911062
2010-04-01	60.9072871541214
2010-07-01	61.4191887211231
2010-10-01	61.2745923811576
2011-01-01	60.3821197183349
2011-04-01	60.7908734798073
2011-07-01	60.8089918276652
2011-10-01	60.9479581316824
2012-01-01	61.0949833705281
2012-04-01	61.4962788299899
2012-07-01	60.5205842017736
2012-10-01	60.5805662229186
2013-01-01	60.0090006158421
2013-04-01	60.0451310178769
2013-07-01	60.6576398955693
2013-10-01	60.1340121565748
2014-01-01	59.7426029402749
2014-04-01	59.5912267542471
2014-07-01	59.2052878413336
2014-10-01	59.4247082709377
2015-01-01	59.8914967072793
2015-04-01	59.5486830622741
2015-07-01	60.3076939415068
2015-10-01	60.1833604405709
2016-01-01	59.9578990627370
2016-04-01	59.4187902651822
2016-07-01	58.9474864112937
2016-10-01	58.8714786909552
2017-01-01	58.6536185401790
2017-04-01	58.6706759335708
2017-07-01	57.7217396995628
2017-10-01	58.2453275117388
2018-01-01	58.8706712854284
2018-04-01	58.4736063277930