Quarter	Percent
2005-01-01	51.6066317443269
2005-04-01	51.3819528244560
2005-07-01	51.9996080465952
2005-10-01	52.2585340213790
2006-01-01	51.9647171205664
2006-04-01	52.3809939154708
2006-07-01	52.3402857829073
2006-10-01	52.5910786060945
2007-01-01	52.0563873742766
2007-04-01	52.4635999874237
2007-07-01	52.5199048975016
2007-10-01	53.2325429535257
2008-01-01	52.4978410929563
2008-04-01	52.9479929677482
2008-07-01	52.7772016525032
2008-10-01	51.9776977293748
2009-01-01	51.5780750412348
2009-04-01	51.5810654929190
2009-07-01	51.9603512082522
2009-10-01	52.3922007493896
2010-01-01	51.6211618616524
2010-04-01	52.5431956122183
2010-07-01	52.2772674014117
2010-10-01	51.7495015215990
2011-01-01	51.8047385571620
2011-04-01	52.3557016058913
2011-07-01	52.8873639047976
2011-10-01	52.9849925699164
2012-01-01	52.5574246770673
2012-04-01	53.4492649250750
2012-07-01	53.7118352335708
2012-10-01	52.9597690911680
2013-01-01	52.6662069163842
2013-04-01	53.0345855474506
2013-07-01	53.0401922940802
2013-10-01	53.4321356723079
2014-01-01	52.7831427627955
2014-04-01	52.8187302024496
2014-07-01	53.0905013286879
2014-10-01	53.4146584918076
2015-01-01	53.1981888594458
2015-04-01	53.4488194374689
2015-07-01	53.5648628503343
2015-10-01	53.9314519244704
2016-01-01	53.3758453829767
2016-04-01	53.7751015378276
2016-07-01	54.2969046962042
2016-10-01	54.3856516864708
2017-01-01	53.9972984661531
2017-04-01	54.3104683255752
2017-07-01	54.4886558141107
2017-10-01	54.5379100498336
2018-01-01	54.6720617232783
2018-04-01	55.0411855777119