Quarter	Percent, Seasonally Adjusted
1998-01-01	58.2468978891102
1998-04-01	58.6141788665759
1998-07-01	57.5876818698755
1998-10-01	57.5716448235256
1999-01-01	57.7703923017902
1999-04-01	58.0363772402568
1999-07-01	57.7868295561046
1999-10-01	58.2308542444274
2000-01-01	58.7041462925993
2000-04-01	58.7759755152497
2000-07-01	60.0270996961390
2000-10-01	60.2887904628769
2001-01-01	60.0573979967880
2001-04-01	61.4256863245510
2001-07-01	63.0004345789134
2001-10-01	63.9310614029580
2002-01-01	64.7853243168031
2002-04-01	64.6674622847084
2002-07-01	64.6885817877892
2002-10-01	64.9576545008730
2003-01-01	65.1454733154929
2003-04-01	66.1224724291249
2003-07-01	66.0898379634054
2003-10-01	66.7708632405306
2004-01-01	67.3015127884108
2004-04-01	67.7373391609537
2004-07-01	69.2261637151928
2004-10-01	69.7126346813652
2005-01-01	70.8942763328063
2005-04-01	71.4618073080798
2005-07-01	71.6930193763199
2005-10-01	70.3863149905450
2006-01-01	70.7608314024990
2006-04-01	70.5474304128604
2006-07-01	70.6611000324695
2006-10-01	71.4088874569058
2007-01-01	71.9881575695556
2007-04-01	72.5886349650291
2007-07-01	73.6914505478450
2007-10-01	74.2777359184521
2008-01-01	74.1770664723846
2008-04-01	73.7211161413802
2008-07-01	73.8769225572310
2008-10-01	73.7519228632142
2009-01-01	73.6213705417256
2009-04-01	73.9032296209576
2009-07-01	73.8506933904578
2009-10-01	74.2237376348928
2010-01-01	75.1932005314683
2010-04-01	75.1131429989502
2010-07-01	73.9200132977666
2010-10-01	74.7162051965550
2011-01-01	75.3157923829321
2011-04-01	75.3754107197013
2011-07-01	75.6093721516981
2011-10-01	77.2420037246116
2012-01-01	74.3061212631614
2012-04-01	74.0773529154035
2012-07-01	74.0706943548384
2012-10-01	73.8328432534366
2013-01-01	73.5778954626206
2013-04-01	73.4271466569113
2013-07-01	74.2508373121089
2013-10-01	74.5109657591800
2014-01-01	74.8413684944705
2014-04-01	74.4160430288258
2014-07-01	73.8714181669010
2014-10-01	72.6070114534554
2015-01-01	71.9509177405104
2015-04-01	72.1638149140112
2015-07-01	72.7045947463123
2015-10-01	73.7462123660246
2016-01-01	74.1469485934997
2016-04-01	73.9741824611634
2016-07-01	73.7640087120209
2016-10-01	73.2820150544448
2017-01-01	72.4930139441091
2017-04-01	73.6048176142258
2017-07-01	73.4505965518424
2017-10-01	74.1431955440114
2018-01-01	74.1686810529080
2018-04-01	73.3660594401456