Quarter	Percent, Seasonally Adjusted
1999-01-01	62.1250454924388
1999-04-01	62.4446271042658
1999-07-01	62.4326449647028
1999-10-01	62.6780717115772
2000-01-01	62.7162736975598
2000-04-01	62.7960745117727
2000-07-01	63.1879775829317
2000-10-01	63.5009532101788
2001-01-01	63.2790568972353
2001-04-01	62.9688095163370
2001-07-01	62.9159389090183
2001-10-01	62.6273185077071
2002-01-01	62.9645446162009
2002-04-01	62.8925976481210
2002-07-01	62.8985052911138
2002-10-01	62.9663487684934
2003-01-01	63.0272359567208
2003-04-01	63.5356307372286
2003-07-01	63.6355106681190
2003-10-01	63.6225450797277
2004-01-01	63.4804187468190
2004-04-01	63.1337118793786
2004-07-01	62.9034223930016
2004-10-01	63.0338753918484
2005-01-01	63.1477539368459
2005-04-01	62.9145662185733
2005-07-01	63.2236415660848
2005-10-01	63.2394951244860
2006-01-01	63.6353296313065
2006-04-01	64.0963633412572
2006-07-01	63.8361715372551
2006-10-01	64.2230886586034
2007-01-01	64.0942727397177
2007-04-01	63.9237082685975
2007-07-01	63.7123124999027
2007-10-01	63.1105823898655
2008-01-01	63.1225239170018
2008-04-01	62.8001413938225
2008-07-01	62.8337530731442
2008-10-01	62.1344345336143
2009-01-01	61.5182435895173
2009-04-01	61.1402837529406
2009-07-01	60.0395361820959
2009-10-01	60.1954823121858
2010-01-01	59.7988094263883
2010-04-01	59.6861344437641
2010-07-01	59.9127655263642
2010-10-01	60.0728929274274
2011-01-01	60.3877221027918
2011-04-01	60.7160234366245
2011-07-01	60.8426770783441
2011-10-01	60.9904896762887
2012-01-01	61.1857281001322
2012-04-01	61.2476089819479
2012-07-01	61.7697050111969
2012-10-01	62.2816578436984
2013-01-01	61.9730282582109
2013-04-01	63.5693746014443
2013-07-01	64.1883109635212
2013-10-01	65.0870006523117
2014-01-01	67.5276716848946
2014-04-01	67.1925346240115
2014-07-01	68.1863607388896
2014-10-01	68.4808146046167
2015-01-01	69.1416504242572
2015-04-01	69.9694022790015
2015-07-01	70.6961095367782
2015-10-01	71.2258507669909
2016-01-01	72.1530886233319
2016-04-01	72.8073388914381
2016-07-01	73.0986490709802
2016-10-01	73.8320974265176
2017-01-01	74.3461294318399
2017-04-01	75.0928693560909
2017-07-01	75.5112334313685
2017-10-01	75.9392220898152
2018-01-01	76.2759882550941
2018-04-01	76.1537205661227