Quarter	Percent, Seasonally Adjusted
1999-01-01	68.4593222866692
1999-04-01	68.0086718220072
1999-07-01	68.3102375768028
1999-10-01	68.3563672966576
2000-01-01	68.3110885069134
2000-04-01	68.1656433570367
2000-07-01	68.1805827036450
2000-10-01	68.1570909477376
2001-01-01	68.5831759072578
2001-04-01	69.0190334172684
2001-07-01	68.8335951258845
2001-10-01	68.7547676980276
2002-01-01	68.4317486969113
2002-04-01	67.9600199075946
2002-07-01	68.0841018559640
2002-10-01	68.4083685649220
2003-01-01	68.1874845901674
2003-04-01	68.3095876899329
2003-07-01	68.3309689149383
2003-10-01	68.1839408525128
2004-01-01	68.4198765056606
2004-04-01	68.5273720523259
2004-07-01	68.2629291139010
2004-10-01	68.2468823391504
2005-01-01	68.2166029252597
2005-04-01	68.2415281805208
2005-07-01	68.2936020225894
2005-10-01	68.7398800665059
2006-01-01	68.5859416095738
2006-04-01	68.4165708239362
2006-07-01	68.2139874232692
2006-10-01	67.8362741842105
2007-01-01	67.5303359858264
2007-04-01	67.5975854882669
2007-07-01	67.9990942556530
2007-10-01	67.9722713101519
2008-01-01	68.0800325021381
2008-04-01	68.3446207108085
2008-07-01	68.3792244045502
2008-10-01	68.3089236733136
2009-01-01	68.1762778715964
2009-04-01	68.0196776924480
2009-07-01	68.1938273474987
2009-10-01	68.0981083786662
2010-01-01	67.8522861530790
2010-04-01	67.8355940089010
2010-07-01	67.7584604235614
2010-10-01	67.8578268549700
2011-01-01	67.7646801854687
2011-04-01	68.1837644336790
2011-07-01	67.9946940161332
2011-10-01	68.2356475178481
2012-01-01	68.4357357064986
2012-04-01	68.3359606240971
2012-07-01	68.3681017009040
2012-10-01	68.3264260684428
2013-01-01	68.5320969414462
2013-04-01	68.2872078027367
2013-07-01	67.9357703684979
2013-10-01	67.8050499231575
2014-01-01	68.1222594133848
2014-04-01	68.1636351332417
2014-07-01	68.2852767921879
2014-10-01	68.3259398836431
2015-01-01	68.0745149850290
2015-04-01	67.7734768229967
2015-07-01	67.8554290693351
2015-10-01	67.8375672749574
2016-01-01	67.8369416441732
2016-04-01	68.1731562361214
2016-07-01	68.1516009603350
2016-10-01	68.1528725246704
2017-01-01	67.9890915007983
2017-04-01	67.8634594446236
2017-07-01	67.6638277580414
2017-10-01	67.3774909145673
2018-01-01	67.5157166878575
2018-04-01	67.8371171288975