Quarter	Percent, Seasonally Adjusted
1999-07-01	63.5579632391654
1999-10-01	63.0807660808719
2000-01-01	62.9361438632577
2000-04-01	63.3616403237976
2000-07-01	63.0397895926594
2000-10-01	62.6982149095833
2001-01-01	62.4410591492842
2001-04-01	61.6900127095658
2001-07-01	61.4154015187326
2001-10-01	60.5807706229964
2002-01-01	60.2266991323182
2002-04-01	60.3468617469580
2002-07-01	60.9043709031674
2002-10-01	60.8626240901969
2003-01-01	60.3156115411754
2003-04-01	60.8280409702477
2003-07-01	60.1868723661628
2003-10-01	60.3224380540719
2004-01-01	60.1173667192658
2004-04-01	59.7886990828016
2004-07-01	59.7782406839423
2004-10-01	59.6666428226056
2005-01-01	60.1913222299266
2005-04-01	60.3294896507460
2005-07-01	60.8549431673618
2005-10-01	61.7636416893864
2006-01-01	62.9807593575406
2006-04-01	63.8185696216375
2006-07-01	64.5090922290076
2006-10-01	65.0391555901218
2007-01-01	65.7517022675218
2007-04-01	66.9855421876408
2007-07-01	67.2758728462508
2007-10-01	67.3379784550583
2008-01-01	67.9555014087303
2008-04-01	68.2174486170738
2008-07-01	69.5138403071801
2008-10-01	70.3955872314214
2009-01-01	70.9429208949947
2009-04-01	70.3249829601002
2009-07-01	69.9297077696570
2009-10-01	70.3456346467642
2010-01-01	69.6378457833358
2010-04-01	69.6151829385130
2010-07-01	69.9039868632343
2010-10-01	70.2941788106934
2011-01-01	69.9667211147082
2011-04-01	70.7114351953676
2011-07-01	70.1492804136251
2011-10-01	70.0450489638590
2012-01-01	69.8918990075915
2012-04-01	68.6581450289531
2012-07-01	69.2726152569794
2012-10-01	69.2476848307372
2013-01-01	69.7998669632106
2013-04-01	70.0114245409095
2013-07-01	69.8212848161178
2013-10-01	68.9970896680235
2014-01-01	68.3201845915062
2014-04-01	68.1701266456224
2014-07-01	67.2918172580921
2014-10-01	67.0272460969285
2015-01-01	66.7950481704461
2015-04-01	66.2476439488872
2015-07-01	66.1504690712980
2015-10-01	65.6481222827105
2016-01-01	65.8191792900464
2016-04-01	65.9822105641854
2016-07-01	65.5675932704450
2016-10-01	65.5235736038803
2017-01-01	65.6444028431598
2017-04-01	65.2058223401724
2017-07-01	65.7787235152935
2017-10-01	66.3630968384536
2018-01-01	66.1831314815137
2018-04-01	66.3126778681270
2018-07-01	66.2479295664267