Quarter	Percent, Seasonally Adjusted
1999-01-01	82.0003445765333
1999-04-01	81.9845669193908
1999-07-01	81.3094956949546
1999-10-01	81.6175385590660
2000-01-01	82.3264997634058
2000-04-01	82.3491010873168
2000-07-01	82.8380524311149
2000-10-01	82.7065557213631
2001-01-01	83.1458488316486
2001-04-01	83.6415531726827
2001-07-01	84.0756807979507
2001-10-01	83.6433717271041
2002-01-01	84.0177253713751
2002-04-01	83.8797343918724
2002-07-01	83.2443659950531
2002-10-01	82.4725690676974
2003-01-01	82.5075978629534
2003-04-01	82.4514555376283
2003-07-01	82.4913795750560
2003-10-01	82.6842062758387
2004-01-01	83.2266643578207
2004-04-01	83.8157268618198
2004-07-01	84.2942763699753
2004-10-01	83.9775071296329
2005-01-01	83.8744476274802
2005-04-01	83.8784945967906
2005-07-01	83.4793946199697
2005-10-01	83.8779274450993
2006-01-01	84.1845145994771
2006-04-01	84.6345898808466
2006-07-01	83.9200514450816
2006-10-01	84.1164938940158
2007-01-01	84.4713558430144
2007-04-01	85.7306668985586
2007-07-01	85.2922724640073
2007-10-01	85.8951643949391
2008-01-01	86.1647842652163
2008-04-01	86.6017639581911
2008-07-01	87.0441446017220
2008-10-01	87.2260074011665
2009-01-01	85.7733497831389
2009-04-01	84.9689859506278
2009-07-01	84.2079569972731
2009-10-01	84.4397044037374
2010-01-01	84.1959337513701
2010-04-01	84.1799980883631
2010-07-01	82.7669721467944
2010-10-01	83.6219159258189
2011-01-01	83.6419942427726
2011-04-01	83.2641228329918
2011-07-01	82.8336712223408
2011-10-01	82.7221373641027
2012-01-01	83.8643235359444
2012-04-01	83.0320154813998
2012-07-01	83.1499131492896
2012-10-01	83.0249500524190
2013-01-01	82.1400717880720
2013-04-01	81.5468125310654
2013-07-01	82.0467997505300
2013-10-01	81.8929417004378
2014-01-01	82.0453748928314
2014-04-01	82.2814166517284
2014-07-01	81.7789976862536
2014-10-01	81.6304700026877
2015-01-01	82.2373032939848
2015-04-01	82.5598323091421
2015-07-01	83.6180687967855
2015-10-01	83.3764392854193
2016-01-01	82.4157227968129
2016-04-01	83.4119070397531
2016-07-01	83.7712072593421
2016-10-01	84.3390286174535
2017-01-01	84.9696747415408
2017-04-01	85.9038706811021
2017-07-01	86.3323981712061
2017-10-01	87.1740260612493
2018-01-01	86.9413436955001
2018-04-01	87.1384976734339