Quarter	Percent
2005-01-01	77.3817264353671
2005-04-01	77.0982959154555
2005-07-01	77.9249031463296
2005-10-01	78.0335695920620
2006-01-01	77.6066932195371
2006-04-01	78.3203164472817
2006-07-01	77.9993964786024
2006-10-01	78.0630458415495
2007-01-01	77.0026259811449
2007-04-01	77.6661731457288
2007-07-01	77.4431755671318
2007-10-01	78.1777448440979
2008-01-01	76.9269246471043
2008-04-01	77.6808645094218
2008-07-01	77.2358372730069
2008-10-01	75.8454866987592
2009-01-01	74.7738232643108
2009-04-01	74.4894707204009
2009-07-01	74.6902934578040
2009-10-01	75.1260255890616
2010-01-01	74.1746408935867
2010-04-01	75.2126832459517
2010-07-01	74.7898342362826
2010-10-01	73.6994641312884
2011-01-01	73.5945941484528
2011-04-01	74.2322348616163
2011-07-01	74.7219118950905
2011-10-01	74.9759273386273
2012-01-01	74.3119390330033
2012-04-01	75.3857617978187
2012-07-01	75.5376946888453
2012-10-01	74.4495172276619
2013-01-01	73.8718091497472
2013-04-01	74.6803568745060
2013-07-01	74.6928012919591
2013-10-01	75.2827495080734
2014-01-01	74.4454461652300
2014-04-01	74.3199554585084
2014-07-01	74.5275949963042
2014-10-01	74.6939359671194
2015-01-01	74.3119190425977
2015-04-01	74.6623253923507
2015-07-01	74.6928478980768
2015-10-01	75.0150961918669
2016-01-01	74.0180696158076
2016-04-01	74.5512360757012
2016-07-01	75.1602898839538
2016-10-01	75.1821624463919
2017-01-01	74.8895340499837
2017-04-01	75.0331487644231
2017-07-01	75.1392291499020
2017-10-01	74.9471288556195
2018-01-01	74.7137611562052
2018-04-01	74.9046850942980