Quarter	Percent, Seasonally Adjusted
1999-04-01	62.7273673239637
1999-07-01	62.9793456857399
1999-10-01	63.6681326688402
2000-01-01	64.0985483481180
2000-04-01	64.6619509890655
2000-07-01	64.7437011845119
2000-10-01	65.1443971835873
2001-01-01	65.3515624486054
2001-04-01	65.8105569776152
2001-07-01	66.3430834608718
2001-10-01	66.6360341244950
2002-01-01	67.1216960410734
2002-04-01	67.4461702108454
2002-07-01	66.5774676640142
2002-10-01	66.6597404849727
2003-01-01	66.9741304695389
2003-04-01	67.0648598645270
2003-07-01	67.2013906674539
2003-10-01	67.4943089050770
2004-01-01	67.6285159102314
2004-04-01	67.8383588276598
2004-07-01	67.9018857186443
2004-10-01	68.5984148099178
2005-01-01	69.1081102319533
2005-04-01	69.4911199681310
2005-07-01	69.8038716459850
2005-10-01	69.9878918010420
2006-01-01	70.1758232023195
2006-04-01	70.1186530110469
2006-07-01	70.5381540240598
2006-10-01	70.9917289007809
2007-01-01	72.2019100346243
2007-04-01	72.3951165652206
2007-07-01	72.5642588073435
2007-10-01	72.2774994156641
2008-01-01	72.5912298151294
2008-04-01	72.0711909890110
2008-07-01	72.5069232443796
2008-10-01	72.7589094213047
2009-01-01	72.1342842989680
2009-04-01	72.3498531127166
2009-07-01	73.2722906695199
2009-10-01	72.5737107193985
2010-01-01	72.5997183935041
2010-04-01	72.7724080768593
2010-07-01	72.5005122489406
2010-10-01	72.3072344002230
2011-01-01	72.1195705528001
2011-04-01	72.6498039326886
2011-07-01	73.0667832497849
2011-10-01	72.8337826317005
2012-01-01	73.0647667223020
2012-04-01	72.6536519074996
2012-07-01	72.9956283328878
2012-10-01	73.0567149649516
2013-01-01	73.5822971173468
2013-04-01	74.1646650788858
2013-07-01	74.1222794131174
2013-10-01	74.1816765251555
2014-01-01	74.3086722564437
2014-04-01	73.9342650449204
2014-07-01	74.5330974907716
2014-10-01	74.1614691821528
2015-01-01	74.1269191480962
2015-04-01	74.6317986191206
2015-07-01	74.3694187391667
2015-10-01	74.9303835537958
2016-01-01	74.6372403367412
2016-04-01	74.8275544971960
2016-07-01	74.9303820564622
2016-10-01	74.6076009864251
2017-01-01	75.1019590486929
2017-04-01	74.5735558004168
2017-07-01	76.7188187843700
2017-10-01	76.6726300851829
2018-01-01	76.4330702946265
2018-04-01	76.8044010825676