Quarter	Percent
2005-01-01	47.2970463736644
2005-04-01	47.5637532093184
2005-07-01	47.2156360944890
2005-10-01	48.3108203246004
2006-01-01	48.2505448049458
2006-04-01	48.1181976623725
2006-07-01	47.9466022555640
2006-10-01	50.6365584056316
2007-01-01	50.1719951137416
2007-04-01	50.1234119143797
2007-07-01	49.9379104442559
2007-10-01	52.0270131876556
2008-01-01	52.0980347745771
2008-04-01	52.1162212102254
2008-07-01	52.1587827438104
2008-10-01	54.2698463019714
2009-01-01	52.3900305669334
2009-04-01	52.2591231866169
2009-07-01	52.0887983113764
2009-10-01	54.4125439777614
2010-01-01	55.6891172960022
2010-04-01	56.6869477038968
2010-07-01	58.4655771413389
2010-10-01	60.0513519786469
2011-01-01	59.6200027842873
2011-04-01	60.7073610059430
2011-07-01	60.5263383505703
2011-10-01	61.6381875738573
2012-01-01	60.9571051726115
2012-04-01	61.1338914060073
2012-07-01	61.0477421663698
2012-10-01	61.6244574365246
2013-01-01	62.1250028798110
2013-04-01	62.6601141340920
2013-07-01	62.3953724161700
2013-10-01	63.3372876832352
2014-01-01	62.9848407406734
2014-04-01	63.2189231448866
2014-07-01	63.4786585732806
2014-10-01	63.9460653818118
2015-01-01	62.4048467496132
2015-04-01	62.8814009466062
2015-07-01	63.5991553653413
2015-10-01	64.7283321872375
2016-01-01	62.8360164733524
2016-04-01	63.7787324026167
2016-07-01	63.9129413922828
2016-10-01	64.6240267709750
2017-01-01	62.9731285626055
2017-04-01	64.0707065218994
2017-07-01	64.3408751175579
2017-10-01	65.1525797416700
2018-01-01	64.4449579224020
2018-04-01	64.9963568318498
2018-07-01	64.0844486762902