Quarter	Percent
2005-01-01	55.2419126713182
2005-04-01	56.0815502427920
2005-07-01	56.3844902885102
2005-10-01	56.1703701221945
2006-01-01	55.6699281781964
2006-04-01	56.5979208927192
2006-07-01	56.8913151112942
2006-10-01	56.8015061112815
2007-01-01	56.1175833584619
2007-04-01	56.9887449893887
2007-07-01	57.1331996599105
2007-10-01	56.9864346796899
2008-01-01	56.3122010719138
2008-04-01	57.0628225153591
2008-07-01	57.0183675860281
2008-10-01	56.4027079258337
2009-01-01	55.0525694621171
2009-04-01	55.3829029518091
2009-07-01	55.3442241239933
2009-10-01	55.0328456500442
2010-01-01	54.3055064124902
2010-04-01	55.1844968296954
2010-07-01	55.2825845297308
2010-10-01	54.9466338393381
2011-01-01	54.4814495198429
2011-04-01	55.2689911389276
2011-07-01	55.3404066065921
2011-10-01	55.2137935857091
2012-01-01	54.5153198093910
2012-04-01	55.3818411865264
2012-07-01	55.4488399503716
2012-10-01	55.2016799093603
2013-01-01	54.4899520992035
2013-04-01	55.3445431985288
2013-07-01	55.4249753094952
2013-10-01	55.2911207460140
2014-01-01	54.7416143852507
2014-04-01	55.5058853471035
2014-07-01	55.6361796493341
2014-10-01	55.5478375661842
2015-01-01	55.0929478605635
2015-04-01	55.8043259083470
2015-07-01	55.9812763589096
2015-10-01	55.9635943979585
2016-01-01	55.6020875096506
2016-04-01	56.3033725138951
2016-07-01	56.4740853056571
2016-10-01	56.3335235246497
2017-01-01	55.9752340287684
2017-04-01	56.7501635133141
2017-07-01	56.9761273997455
2017-10-01	56.8581562705391
2018-01-01	56.5440996116710
2018-04-01	57.2680026597723