Quarter	Percent
2005-01-01	53.6020495747550
2005-04-01	53.7340947053522
2005-07-01	54.3046341881372
2005-10-01	55.4168935429526
2006-01-01	55.4103189688947
2006-04-01	55.8888931869946
2006-07-01	56.2842442904836
2006-10-01	56.4734815526338
2007-01-01	55.3634196112125
2007-04-01	55.5446095360077
2007-07-01	55.0376867851683
2007-10-01	56.3943060340592
2008-01-01	55.6139494320656
2008-04-01	55.8155903137159
2008-07-01	54.3689829148358
2008-10-01	54.0821374155337
2009-01-01	54.3640451526760
2009-04-01	54.2304266521414
2009-07-01	55.7232104651874
2009-10-01	56.0955466026963
2010-01-01	55.0435634198022
2010-04-01	56.1629444298163
2010-07-01	55.1915925598105
2010-10-01	54.2272722404875
2011-01-01	54.5491073012285
2011-04-01	54.9845220882064
2011-07-01	55.9821031019790
2011-10-01	56.1319833443037
2012-01-01	56.0569884626338
2012-04-01	57.0795786764494
2012-07-01	57.2209514491823
2012-10-01	55.9851760290548
2013-01-01	55.4852728942903
2013-04-01	56.8322797957237
2013-07-01	56.5145399862209
2013-10-01	57.2155789040829
2014-01-01	56.5202734944851
2014-04-01	56.5397717710710
2014-07-01	56.3544305069919
2014-10-01	56.3151519248959
2015-01-01	56.0028969344807
2015-04-01	55.7312778347750
2015-07-01	56.5826961907348
2015-10-01	55.9714903404731
2016-01-01	55.0330764495394
2016-04-01	56.1839041123195
2016-07-01	56.4625064490258
2016-10-01	56.7293815687452
2017-01-01	56.2692142411780
2017-04-01	56.3860915212613
2017-07-01	55.9526369198438
2017-10-01	55.3703853330356
2018-01-01	56.0465074371225
2018-04-01	56.0539431888589