Quarter	Percent
2005-01-01	52.5966956496153
2005-04-01	52.7942811987825
2005-07-01	53.5574395991862
2005-10-01	53.4375022522685
2006-01-01	54.5100935139759
2006-04-01	55.6798791996980
2006-07-01	54.6819161764169
2006-10-01	56.0625553935443
2007-01-01	55.9597951453418
2007-04-01	56.8746868406010
2007-07-01	55.5923097109236
2007-10-01	57.7460525296896
2008-01-01	58.2223917859748
2008-04-01	57.6558230318803
2008-07-01	56.8571172302449
2008-10-01	58.6985039985872
2009-01-01	58.2517041151224
2009-04-01	58.4404381954628
2009-07-01	58.1281665489606
2009-10-01	58.9255457603811
2010-01-01	59.2537618383732
2010-04-01	59.5324289877273
2010-07-01	61.2281029788129
2010-10-01	62.4381850914975
2011-01-01	61.7265801724187
2011-04-01	62.4384574870045
2011-07-01	61.5933820753098
2011-10-01	62.8370819677660
2012-01-01	64.0581492871121
2012-04-01	64.7313356930228
2012-07-01	65.0668513137016
2012-10-01	66.0162905722663
2013-01-01	65.2091289346936
2013-04-01	66.0037004529140
2013-07-01	65.2887197304264
2013-10-01	66.9799967359643
2014-01-01	66.9209723674744
2014-04-01	66.8235658275787
2014-07-01	66.3135794158596
2014-10-01	66.4291045284650
2015-01-01	65.4197284590924
2015-04-01	66.0992078313804
2015-07-01	66.6326776084342
2015-10-01	67.9328179353976
2016-01-01	66.3842806265066
2016-04-01	66.3123757645282
2016-07-01	66.2158614924633
2016-10-01	66.7693444208473
2017-01-01	66.9360313869433
2017-04-01	67.2133059607223
2017-07-01	68.4147327774310
2017-10-01	69.3416351550621
2018-01-01	68.7282237634716
2018-04-01	68.2441312246227
2018-07-01	67.8182817082173