Quarter	Percent, Seasonally Adjusted
1999-04-01	65.5831137518709
1999-07-01	65.9528405666016
1999-10-01	65.9558741705992
2000-01-01	65.8739216070617
2000-04-01	66.0823618914094
2000-07-01	66.1251049915688
2000-10-01	65.9412595279152
2001-01-01	66.1337113237458
2001-04-01	66.1452288536844
2001-07-01	66.0781046480779
2001-10-01	65.9839779351550
2002-01-01	65.8191952341586
2002-04-01	65.7327938708606
2002-07-01	65.7300576607331
2002-10-01	66.0165908055281
2003-01-01	65.9594203891130
2003-04-01	66.0906373610923
2003-07-01	66.1258207946981
2003-10-01	65.9678062096785
2004-01-01	66.2135119368340
2004-04-01	66.0642565804734
2004-07-01	65.9705735998920
2004-10-01	66.0774792323269
2005-01-01	66.2689344856507
2005-04-01	65.9293579996283
2005-07-01	65.9573033843342
2005-10-01	65.9266376723051
2006-01-01	65.8519757989563
2006-04-01	65.8636948884470
2006-07-01	66.1159393209249
2006-10-01	65.9011907862373
2007-01-01	65.7826494481453
2007-04-01	65.9311126192945
2007-07-01	65.9395283615518
2007-10-01	66.1119238199945
2008-01-01	66.1611537458157
2008-04-01	66.0574728745402
2008-07-01	65.4872341056261
2008-10-01	65.2065139771613
2009-01-01	64.4797738519856
2009-04-01	63.3883678513832
2009-07-01	63.1044596564010
2009-10-01	62.8804315285632
2010-01-01	62.5219574615330
2010-04-01	63.0226898021227
2010-07-01	63.5361594273172
2010-10-01	63.2609365365534
2011-01-01	63.1043128196485
2011-04-01	63.0881909433973
2011-07-01	62.6071034931670
2011-10-01	62.5953343185376
2012-01-01	62.7674212251969
2012-04-01	63.2301377894916
2012-07-01	63.2590788731076
2012-10-01	63.3083538756037
2013-01-01	62.9819646767661
2013-04-01	63.1167088948642
2013-07-01	63.4613110862205
2013-10-01	63.6378844131645
2014-01-01	64.0643799987810
2014-04-01	64.2463456993820
2014-07-01	64.3452889523299
2014-10-01	64.3361179088456
2015-01-01	64.8139915900566
2015-04-01	64.4526194989136
2015-07-01	64.6908523899714
2015-10-01	65.3057835889775
2016-01-01	65.3164078441775
2016-04-01	65.3742474379377
2016-07-01	65.1620233215011
2016-10-01	65.0554417120846
2017-01-01	65.1868543710040
2017-04-01	65.3305556212131
2017-07-01	65.0026519081900
2017-10-01	65.2855315173765
2018-01-01	65.5322200644728
2018-04-01	65.5478968843176