Quarter	Percent
2005-01-01	48.9432781883320
2005-04-01	49.9625522281135
2005-07-01	50.4674254451998
2005-10-01	50.7062648255969
2006-01-01	51.0623641791159
2006-04-01	51.2329924757392
2006-07-01	51.9340590094622
2006-10-01	52.0561420320724
2007-01-01	51.6918570609454
2007-04-01	52.3875545283179
2007-07-01	51.9695146164917
2007-10-01	53.0359562217793
2008-01-01	52.4614972441912
2008-04-01	52.9447519249178
2008-07-01	52.0790428649308
2008-10-01	52.0775555084683
2009-01-01	52.3625235093225
2009-04-01	52.8156872772903
2009-07-01	54.8302892294304
2009-10-01	54.0808431350607
2010-01-01	52.8928752935073
2010-04-01	54.1299326254009
2010-07-01	53.4449734483583
2010-10-01	52.3857105459487
2011-01-01	52.6085496399958
2011-04-01	53.7607139445916
2011-07-01	53.9281423265194
2011-10-01	55.2478320277143
2012-01-01	54.2211933943741
2012-04-01	55.7497327340567
2012-07-01	55.6588403464730
2012-10-01	55.1740990060621
2013-01-01	54.5167277251493
2013-04-01	55.8721044248840
2013-07-01	55.8400327744506
2013-10-01	55.9201405853375
2014-01-01	54.6020719129486
2014-04-01	54.8480964017162
2014-07-01	54.3602428065203
2014-10-01	54.5106928272047
2015-01-01	54.4025736637460
2015-04-01	55.2211819313389
2015-07-01	55.0496554448875
2015-10-01	56.2490524596755
2016-01-01	55.3725251432361
2016-04-01	55.4859530539625
2016-07-01	55.6815311915975
2016-10-01	55.3985092780731
2017-01-01	55.1307675264931
2017-04-01	55.3310465987211
2017-07-01	54.9249738067654
2017-10-01	55.6443398000125
2018-01-01	55.1525462001366
2018-04-01	56.1953877399399