Quarter	Percent, Seasonally Adjusted
1999-01-01	66.4085398644119
1999-04-01	66.8351171220456
1999-07-01	66.1721079600920
1999-10-01	66.7757170107024
2000-01-01	66.4150284291007
2000-04-01	66.7128534007821
2000-07-01	67.7886354597370
2000-10-01	67.6933929027128
2001-01-01	68.5767186117338
2001-04-01	68.4546825449879
2001-07-01	69.4267262180981
2001-10-01	68.1323288513846
2002-01-01	69.6468223450032
2002-04-01	68.7055744251425
2002-07-01	66.8905609742379
2002-10-01	67.3704503929707
2003-01-01	67.3416921804743
2003-04-01	67.1645985393597
2003-07-01	66.4373045837437
2003-10-01	68.4865330513671
2004-01-01	69.3050258452812
2004-04-01	69.8483998359417
2004-07-01	70.5953415026882
2004-10-01	70.1773702278723
2005-01-01	70.7451614343543
2005-04-01	70.2191556176838
2005-07-01	70.0394605189522
2005-10-01	70.6966532353862
2006-01-01	71.4562754877299
2006-04-01	70.8418932186974
2006-07-01	71.1705241035469
2006-10-01	71.0707182389100
2007-01-01	71.5892519200763
2007-04-01	73.1633019848591
2007-07-01	73.2609678445164
2007-10-01	72.8496587966249
2008-01-01	72.3135524275724
2008-04-01	72.6277897984847
2008-07-01	73.4230538349171
2008-10-01	72.4251962518116
2009-01-01	70.6569109877728
2009-04-01	71.3899656829180
2009-07-01	70.8974262890577
2009-10-01	71.1789500375844
2010-01-01	70.9313962178266
2010-04-01	69.1120878877003
2010-07-01	69.2724514655008
2010-10-01	69.2441749763867
2011-01-01	68.2366308940170
2011-04-01	67.5952236427070
2011-07-01	67.5206615329440
2011-10-01	67.4809708372739
2012-01-01	67.6335607593660
2012-04-01	66.9874164264810
2012-07-01	66.9946408047309
2012-10-01	68.0410302361869
2013-01-01	67.1470607642689
2013-04-01	66.4979531171579
2013-07-01	67.5073654815870
2013-10-01	67.1882267252273
2014-01-01	66.8077754687788
2014-04-01	67.8663294974225
2014-07-01	67.3561587117285
2014-10-01	68.1740154660363
2015-01-01	68.7188536990721
2015-04-01	69.1393231063115
2015-07-01	69.9492911483442
2015-10-01	68.9339383773827
2016-01-01	68.2729149044350
2016-04-01	68.9595417507963
2016-07-01	68.9489169186138
2016-10-01	69.2935306206366
2017-01-01	71.1515530577376
2017-04-01	72.6612310858637
2017-07-01	72.8867595170804
2017-10-01	73.4195095531387
2018-01-01	73.8420836062508
2018-04-01	74.4499819595941