Quarter	Percent, Seasonally Adjusted
1999-04-01	86.4631240890096
1999-07-01	87.1881403309294
1999-10-01	87.6704352024675
2000-01-01	87.8652193253080
2000-04-01	88.0869082657414
2000-07-01	88.4109702854510
2000-10-01	88.3720888249905
2001-01-01	88.5628073269382
2001-04-01	88.6788144435942
2001-07-01	88.8140798299570
2001-10-01	88.4132994695083
2002-01-01	87.6740971543898
2002-04-01	87.6130257836008
2002-07-01	87.2339015029034
2002-10-01	87.1560884236778
2003-01-01	87.0189140645428
2003-04-01	87.0025159191973
2003-07-01	86.6983646399705
2003-10-01	87.3345445589719
2004-01-01	87.6637687549149
2004-04-01	87.5879312237432
2004-07-01	87.8233275536398
2004-10-01	88.1301017388181
2005-01-01	88.1994825850225
2005-04-01	88.4254206179095
2005-07-01	88.5410194430731
2005-10-01	88.6025999820842
2006-01-01	88.5975685192819
2006-04-01	88.4349900709598
2006-07-01	88.2884311644744
2006-10-01	88.1754927278836
2007-01-01	88.1446497902198
2007-04-01	87.9150731796882
2007-07-01	87.8568633935790
2007-10-01	87.2951404532810
2008-01-01	86.9436781034021
2008-04-01	86.5400800284521
2008-07-01	85.2070721615390
2008-10-01	83.8295505716171
2009-01-01	79.8158488368447
2009-04-01	78.2134372144875
2009-07-01	77.3310514371193
2009-10-01	76.5130627557726
2010-01-01	75.7452981392194
2010-04-01	75.6929131145427
2010-07-01	75.2616123798619
2010-10-01	74.1201619012166
2011-01-01	73.9964050856532
2011-04-01	74.3137607645628
2011-07-01	73.9411854332227
2011-10-01	74.1490705803997
2012-01-01	74.3294034295068
2012-04-01	74.3556175301805
2012-07-01	74.7826823895211
2012-10-01	74.8245738045746
2013-01-01	75.6594743856317
2013-04-01	76.5824696820448
2013-07-01	77.4134985310177
2013-10-01	78.3062363576426
2014-01-01	78.3878493209531
2014-04-01	78.9073823178482
2014-07-01	79.5086475738459
2014-10-01	80.4272136957160
2015-01-01	80.5735981709115
2015-04-01	81.1205804633663
2015-07-01	81.3052969989971
2015-10-01	81.2133248664478
2016-01-01	81.2897494682161
2016-04-01	81.5419501439086
2016-07-01	82.3790221425610
2016-10-01	83.5195583604673
2017-01-01	83.9465009494990
2017-04-01	83.7998769164252
2017-07-01	84.9819465891926
2017-10-01	85.0989021052660
2018-01-01	85.8062081576311
2018-04-01	85.1417154544042