Quarter	Percent, Seasonally Adjusted
1999-01-01	70.9496740389064
1999-04-01	70.5587502231131
1999-07-01	70.4051044900823
1999-10-01	70.3273170288660
2000-01-01	70.1363871858282
2000-04-01	69.4449826435068
2000-07-01	69.4072055431835
2000-10-01	70.3012547380306
2001-01-01	70.3761284982013
2001-04-01	70.6346226209214
2001-07-01	70.8325479448605
2001-10-01	70.8573932750368
2002-01-01	69.8750502382487
2002-04-01	70.4892524150306
2002-07-01	70.8763117512156
2002-10-01	71.1077699124348
2003-01-01	71.4168737717991
2003-04-01	71.6883535137497
2003-07-01	71.7528965316629
2003-10-01	71.2210181821676
2004-01-01	69.4554219016661
2004-04-01	69.1488420215545
2004-07-01	69.3524224156546
2004-10-01	69.3191640403554
2005-01-01	69.2785468022981
2005-04-01	68.9837335443893
2005-07-01	68.9414715453111
2005-10-01	69.4315483590998
2006-01-01	69.2054023510570
2006-04-01	70.0131469591014
2006-07-01	70.8039476557775
2006-10-01	70.9539286642736
2007-01-01	70.9388687591495
2007-04-01	70.5250344475698
2007-07-01	70.5185754322954
2007-10-01	71.8726890715398
2008-01-01	72.4491215682982
2008-04-01	73.2992905164579
2008-07-01	74.8398429430223
2008-10-01	74.3088144819767
2009-01-01	72.4632709019564
2009-04-01	71.4541195338192
2009-07-01	70.7718737778950
2009-10-01	70.2730674773269
2010-01-01	69.4615305049142
2010-04-01	69.6257013782654
2010-07-01	70.3764341846970
2010-10-01	70.8966892373331
2011-01-01	70.3006498315062
2011-04-01	70.4245214944950
2011-07-01	70.6073758993001
2011-10-01	70.0858091639278
2012-01-01	70.0341596644626
2012-04-01	69.8160956065151
2012-07-01	69.6382504342838
2012-10-01	68.7167884730978
2013-01-01	68.9075042252505
2013-04-01	69.0996246468879
2013-07-01	69.8648315953603
2013-10-01	70.4504444383915
2014-01-01	70.6362436843042
2014-04-01	70.4292044427185
2014-07-01	69.7467058998175
2014-10-01	70.0367432903458
2015-01-01	70.4203137617172
2015-04-01	70.4173667221354
2015-07-01	70.9386538317997
2015-10-01	72.0176988551431
2016-01-01	73.3229323294338
2016-04-01	73.6781229583581
2016-07-01	73.5091122909446
2016-10-01	73.3179003815725
2017-01-01	73.3651724659142
2017-04-01	72.9534754521470
2017-07-01	74.0730851865043
2017-10-01	73.3767020359632
2018-01-01	74.1897195930082
2018-04-01	73.4733711560467