Quarter	Percent
2005-01-01	42.4663564941324
2005-04-01	42.4205442912185
2005-07-01	41.7245676235596
2005-10-01	42.4486018863040
2006-01-01	43.3638329856424
2006-04-01	43.8576753358995
2006-07-01	42.5498787906509
2006-10-01	43.5722663719421
2007-01-01	44.2168941967111
2007-04-01	43.5542471014387
2007-07-01	43.8623563416394
2007-10-01	45.7994746629811
2008-01-01	46.4593479351762
2008-04-01	46.5792143658810
2008-07-01	45.8908250546447
2008-10-01	47.4562151513364
2009-01-01	47.2119642200886
2009-04-01	47.1531455425724
2009-07-01	46.8518479131662
2009-10-01	48.2037126857445
2010-01-01	50.7145027815984
2010-04-01	51.1161195836147
2010-07-01	52.1675399256085
2010-10-01	53.1406457011366
2011-01-01	53.0663995241524
2011-04-01	53.9728386676462
2011-07-01	54.0457367403301
2011-10-01	54.6859034336354
2012-01-01	54.6570668626464
2012-04-01	54.3044186364330
2012-07-01	54.8140305096152
2012-10-01	54.8225602778724
2013-01-01	54.9803389609848
2013-04-01	54.9303249577504
2013-07-01	54.1429725971683
2013-10-01	55.4756395992972
2014-01-01	55.6306939966697
2014-04-01	55.1510357338784
2014-07-01	55.7605362866180
2014-10-01	56.0811752733245
2015-01-01	55.2087094762345
2015-04-01	55.5576757489077
2015-07-01	56.0406057040937
2015-10-01	56.4831250596596
2016-01-01	55.4470637422726
2016-04-01	56.0686181687237
2016-07-01	56.1706242651032
2016-10-01	56.8115880459085
2017-01-01	56.1082116534730
2017-04-01	56.8187282129594
2017-07-01	57.3232772379716
2017-10-01	58.0428031198112
2018-01-01	58.0968724310587
2018-04-01	57.7510462482790
2018-07-01	57.1686546724203