Quarter	Percent, Seasonally Adjusted
1999-04-01	86.7046350788124
1999-07-01	87.1400817649621
1999-10-01	87.2631169319150
2000-01-01	87.1749532682651
2000-04-01	87.4757046943027
2000-07-01	87.5425312925378
2000-10-01	87.5699824085190
2001-01-01	87.6377579530857
2001-04-01	87.5869675559526
2001-07-01	87.2850260254310
2001-10-01	87.2753782824573
2002-01-01	87.1144733957348
2002-04-01	87.2038652146350
2002-07-01	87.4817429358684
2002-10-01	87.7363550214808
2003-01-01	87.4889568819947
2003-04-01	87.6163625459146
2003-07-01	87.5879764675774
2003-10-01	87.4501505909958
2004-01-01	87.6818147587447
2004-04-01	87.5134633445610
2004-07-01	87.5892463826800
2004-10-01	87.8787014502990
2005-01-01	87.8956474948815
2005-04-01	87.6566034325774
2005-07-01	87.8748696919231
2005-10-01	87.8233851050226
2006-01-01	87.8904351202040
2006-04-01	87.8340423219515
2006-07-01	87.9513043282196
2006-10-01	87.9750839539966
2007-01-01	87.9224566668136
2007-04-01	88.3170987437366
2007-07-01	88.3072619520315
2007-10-01	88.1115625800841
2008-01-01	88.1131507507900
2008-04-01	87.9935149712234
2008-07-01	87.4002517267260
2008-10-01	87.1697813686459
2009-01-01	86.7979200694294
2009-04-01	85.4201452604306
2009-07-01	85.2674409914026
2009-10-01	85.2846851824187
2010-01-01	84.7263641138702
2010-04-01	85.2978922396333
2010-07-01	85.7078252530220
2010-10-01	85.7163976727476
2011-01-01	85.9762958560783
2011-04-01	85.8563378578002
2011-07-01	85.7484506000066
2011-10-01	85.8607365467712
2012-01-01	86.3493663168468
2012-04-01	86.5116935407329
2012-07-01	86.6283964856035
2012-10-01	86.7913106419530
2013-01-01	86.3034046485471
2013-04-01	86.5154390453678
2013-07-01	86.8762999457904
2013-10-01	87.1361017007651
2014-01-01	87.6796351850914
2014-04-01	88.0757469541247
2014-07-01	88.3065924934415
2014-10-01	88.0971578108763
2015-01-01	88.3720286136905
2015-04-01	88.0367553702230
2015-07-01	88.1667951953723
2015-10-01	88.6694274349112
2016-01-01	88.8055595347864
2016-04-01	89.1882328122428
2016-07-01	89.0522360291568
2016-10-01	88.9328251793546
2017-01-01	89.0763529077937
2017-04-01	89.5768564059085
2017-07-01	89.7765684454913
2017-10-01	89.8873749975072
2018-01-01	89.7398936249116
2018-04-01	89.7405020859502