Quarter	Percent
2005-01-01	86.2091192845246
2005-04-01	87.2057096099438
2005-07-01	87.4918707299417
2005-10-01	87.3141336327818
2006-01-01	86.6010625957496
2006-04-01	87.6644029511156
2006-07-01	87.8963636535026
2006-10-01	87.8850135060177
2007-01-01	87.1893146050614
2007-04-01	88.1982686184780
2007-07-01	88.2483094542785
2007-10-01	88.0267133620111
2008-01-01	87.2152818292568
2008-04-01	87.9266776272030
2008-07-01	87.7834964672538
2008-10-01	86.9045119918421
2009-01-01	84.7701241222003
2009-04-01	84.9668313918994
2009-07-01	84.8784675267606
2009-10-01	84.5893871479973
2010-01-01	83.6265388509708
2010-04-01	84.8951523060546
2010-07-01	85.0748426969484
2010-10-01	84.8092331000162
2011-01-01	84.2621636218011
2011-04-01	85.2540673498370
2011-07-01	85.3486635414311
2011-10-01	85.1297753314306
2012-01-01	84.3882209385836
2012-04-01	85.3271224201051
2012-07-01	85.3835409061513
2012-10-01	85.1161737011214
2013-01-01	84.1337460587042
2013-04-01	85.1116872403898
2013-07-01	85.1249354149957
2013-10-01	85.1376019721108
2014-01-01	84.4667633625104
2014-04-01	85.4249600393769
2014-07-01	85.6513646720735
2014-10-01	85.5661545082053
2015-01-01	85.0787966704526
2015-04-01	85.8916552501811
2015-07-01	86.0873588285577
2015-10-01	86.0339329014162
2016-01-01	85.6281149370477
2016-04-01	86.4283870943335
2016-07-01	86.5061730525779
2016-10-01	86.4216836380137
2017-01-01	86.0359125428837
2017-04-01	86.9287838738833
2017-07-01	87.1043220651256
2017-10-01	87.1097167415455
2018-01-01	86.8208040273920
2018-04-01	87.4642201479963