Quarter	Percent, Seasonally Adjusted
2000-01-01	84.2731432044100
2000-04-01	84.3116414348569
2000-07-01	84.0473588771372
2000-10-01	84.0851748070730
2001-01-01	83.9002014258336
2001-04-01	83.8596304954188
2001-07-01	83.6653128120883
2001-10-01	83.3801089010736
2002-01-01	83.4676921568893
2002-04-01	83.3297372123432
2002-07-01	83.1952225861382
2002-10-01	82.8031777522266
2003-01-01	82.3288863422766
2003-04-01	82.0124985553384
2003-07-01	81.7136204624788
2003-10-01	81.6260501130471
2004-01-01	81.7354275158449
2004-04-01	81.5725442414534
2004-07-01	81.8710996736638
2004-10-01	81.6807552193109
2005-01-01	81.4470073321303
2005-04-01	81.4870710237822
2005-07-01	81.5661024944787
2005-10-01	81.9629957210274
2006-01-01	81.6352721217673
2006-04-01	81.3256479037867
2006-07-01	81.1567799496190
2006-10-01	80.9057035089281
2007-01-01	81.3020920633071
2007-04-01	81.3073315232291
2007-07-01	81.6583168341165
2007-10-01	82.2613906850826
2008-01-01	82.6604196001842
2008-04-01	83.0536347733516
2008-07-01	82.9159742016910
2008-10-01	82.3478396490259
2009-01-01	82.0113343778598
2009-04-01	81.8722553843849
2009-07-01	80.6734789637944
2009-10-01	80.5416862767361
2010-01-01	80.8155712707678
2010-04-01	80.9178522324993
2010-07-01	80.2671850572153
2010-10-01	80.4650528184300
2011-01-01	79.5939998909069
2011-04-01	79.5393541697290
2011-07-01	80.1375788922508
2011-10-01	80.4137252088168
2012-01-01	80.7994138052556
2012-04-01	80.6644848540781
2012-07-01	80.4430469563758
2012-10-01	80.4513635926087
2013-01-01	80.2927102446376
2013-04-01	80.3567706870121
2013-07-01	80.2384326396983
2013-10-01	80.0182421761908
2014-01-01	79.9231124153575
2014-04-01	79.9843223262474
2014-07-01	80.1151873912328
2014-10-01	80.2311401807224
2015-01-01	80.2580757536832
2015-04-01	80.3487330384653
2015-07-01	80.3890155251451
2015-10-01	80.2522157042236
2016-01-01	80.4708518361443
2016-04-01	80.1647381953666
2016-07-01	80.1067899488334
2016-10-01	79.7713116436210
2017-01-01	79.4515385265132
2017-04-01	79.1725189160840
2017-07-01	79.1926772139163
2017-10-01	79.4510552471717
2018-01-01	79.7940150227153
2018-04-01	80.0587867195566