Quarter	Percent
2005-01-01	59.6139516487380
2005-04-01	59.4295618335359
2005-07-01	59.0315935066588
2005-10-01	59.3039778944266
2006-01-01	60.4619342654243
2006-04-01	60.6172316235530
2006-07-01	59.8163189321125
2006-10-01	60.2069966405704
2007-01-01	60.9233105487399
2007-04-01	60.3372891942536
2007-07-01	60.3072641186154
2007-10-01	61.6698643539250
2008-01-01	62.4487790222042
2008-04-01	62.2427133684438
2008-07-01	61.7589399784732
2008-10-01	62.6292112850729
2009-01-01	62.5047199271297
2009-04-01	62.2935704626480
2009-07-01	61.9659508423500
2009-10-01	62.4039059771944
2010-01-01	64.0877983862794
2010-04-01	64.2812090119048
2010-07-01	65.1713467590174
2010-10-01	65.5722902097902
2011-01-01	65.9905962533172
2011-04-01	66.1374404903258
2011-07-01	66.2439552733622
2011-10-01	66.3807480914176
2012-01-01	66.5164618011946
2012-04-01	66.0673082549444
2012-07-01	66.0954095886690
2012-10-01	66.3985822997593
2013-01-01	66.7615060097331
2013-04-01	66.3679385882000
2013-07-01	65.8621666040938
2013-10-01	66.7588211071718
2014-01-01	66.9122943898443
2014-04-01	66.4313200720827
2014-07-01	66.3536385686028
2014-10-01	66.8131434975926
2015-01-01	66.6282054783435
2015-04-01	66.5907409619978
2015-07-01	66.7967103049750
2015-10-01	67.0105542772916
2016-01-01	66.5594100365090
2016-04-01	66.6881939748828
2016-07-01	66.7998348354604
2016-10-01	67.0651195813012
2017-01-01	67.1204350164006
2017-04-01	67.2420076148915
2017-07-01	67.4044776440855
2017-10-01	67.8458868332190
2018-01-01	67.8286309671872
2018-04-01	67.6962434078650
2018-07-01	67.0844177802143