Quarter	Percent, Seasonally Adjusted
1999-04-01	67.5799564481448
1999-07-01	67.7614080611281
1999-10-01	67.8004440686852
2000-01-01	67.7276294583745
2000-04-01	67.8433196076302
2000-07-01	67.8544353290423
2000-10-01	67.6312331416134
2001-01-01	67.6795452499955
2001-04-01	67.4778806191211
2001-07-01	67.5763331762847
2001-10-01	67.6604091463342
2002-01-01	67.5819487437689
2002-04-01	67.7240356540360
2002-07-01	67.7571386932204
2002-10-01	67.8773380256604
2003-01-01	67.7687650640166
2003-04-01	67.7915655660496
2003-07-01	67.8749630094828
2003-10-01	67.8252553189543
2004-01-01	67.9224986396071
2004-04-01	67.8459871513918
2004-07-01	67.7434005345850
2004-10-01	67.9187927832016
2005-01-01	68.1222238710217
2005-04-01	67.8776994439032
2005-07-01	68.0400821068157
2005-10-01	68.2208790900135
2006-01-01	68.3872416994322
2006-04-01	68.5762756348435
2006-07-01	68.7139369208912
2006-10-01	68.5478095954412
2007-01-01	68.3384177347848
2007-04-01	68.3195544592669
2007-07-01	68.4155514113904
2007-10-01	68.5021897094855
2008-01-01	68.5919856611641
2008-04-01	68.7028922427163
2008-07-01	68.6539584578398
2008-10-01	68.7716484416779
2009-01-01	68.7922043176195
2009-04-01	68.5053624751446
2009-07-01	68.4278782090664
2009-10-01	68.3195582299968
2010-01-01	68.1186658386643
2010-04-01	68.2961584179570
2010-07-01	68.4756467876400
2010-10-01	68.2961828302768
2011-01-01	68.2890836387918
2011-04-01	68.3346666679968
2011-07-01	68.2398891941635
2011-10-01	68.3127726224440
2012-01-01	68.2730880712095
2012-04-01	68.4917916516726
2012-07-01	68.5585315153597
2012-10-01	68.7177977786679
2013-01-01	68.6182759140161
2013-04-01	68.6810359769879
2013-07-01	68.8598463720381
2013-10-01	68.8182632657784
2014-01-01	68.8419518277072
2014-04-01	68.8871187898875
2014-07-01	68.8558387333815
2014-10-01	68.7625759060050
2015-01-01	68.9109226197711
2015-04-01	68.8185849514256
2015-07-01	68.9095304770461
2015-10-01	69.1002332471875
2016-01-01	69.1511041620595
2016-04-01	69.2333175649974
2016-07-01	69.1769433442774
2016-10-01	69.1782476879248
2017-01-01	69.2503169925777
2017-04-01	69.3738104142469
2017-07-01	69.1374735163117
2017-10-01	69.3206435158976
2018-01-01	69.5408298832827
2018-04-01	69.4405059138786