Quarter	Percent
2005-01-01	52.1828099066280
2005-04-01	53.1992719621794
2005-07-01	55.2095123523176
2005-10-01	53.0100836199974
2006-01-01	52.1657422411204
2006-04-01	53.4253239776428
2006-07-01	55.4120911554883
2006-10-01	53.0642071422220
2007-01-01	52.0133039509849
2007-04-01	53.2141071123207
2007-07-01	54.8844846924782
2007-10-01	52.7768532787946
2008-01-01	51.7033849199666
2008-04-01	53.3764708540046
2008-07-01	55.0294846322950
2008-10-01	52.1459821739852
2009-01-01	50.5770569963068
2009-04-01	52.0807076081642
2009-07-01	53.2524135191830
2009-10-01	50.5496484412211
2010-01-01	49.6619486355188
2010-04-01	51.2758677491606
2010-07-01	52.6089866976748
2010-10-01	50.1813136859220
2011-01-01	49.5160172738548
2011-04-01	50.8885959923119
2011-07-01	52.4972574159805
2011-10-01	50.5378828466352
2012-01-01	49.1902675744384
2012-04-01	51.0405005882971
2012-07-01	52.5530591960111
2012-10-01	50.2710264750381
2013-01-01	49.3158571399426
2013-04-01	50.8728609355785
2013-07-01	52.5420932013282
2013-10-01	49.6848267696271
2014-01-01	49.3430589167644
2014-04-01	50.5574171199700
2014-07-01	52.4708984663351
2014-10-01	49.9444024239984
2015-01-01	49.2540109770433
2015-04-01	50.3267647184384
2015-07-01	51.9796258079966
2015-10-01	50.0712141890986
2016-01-01	49.0876721260322
2016-04-01	50.6867472975697
2016-07-01	52.1530558855581
2016-10-01	50.1497237146407
2017-01-01	49.2507843605702
2017-04-01	50.8457751052109
2017-07-01	52.3099279623480
2017-10-01	49.8122675696503
2018-01-01	49.4765697101587
2018-04-01	50.8808613031660