Quarter	Percent
2005-01-01	52.1865278501032
2005-04-01	53.0641941250372
2005-07-01	51.1682925422075
2005-10-01	52.0372921036573
2006-01-01	52.5668298786988
2006-04-01	52.1907167802914
2006-07-01	50.6275416612724
2006-10-01	51.0983461095076
2007-01-01	52.1794853202517
2007-04-01	52.5809635774756
2007-07-01	51.6515656574685
2007-10-01	50.1268719154982
2008-01-01	52.3475520069703
2008-04-01	52.2553833938776
2008-07-01	51.4240186448657
2008-10-01	52.9651770372248
2009-01-01	54.4925231042680
2009-04-01	54.1289654322703
2009-07-01	52.1549981063369
2009-10-01	51.5055318811440
2010-01-01	53.7768166753432
2010-04-01	52.7396690690087
2010-07-01	51.5706916587053
2010-10-01	53.5763901242545
2011-01-01	54.8162537144083
2011-04-01	53.4929754125831
2011-07-01	52.5848398527345
2011-10-01	51.5713080851191
2012-01-01	54.2177429191751
2012-04-01	52.4137402630100
2012-07-01	51.3777128973944
2012-10-01	52.9578160248938
2013-01-01	54.9657942214644
2013-04-01	53.4351721548120
2013-07-01	53.0021343877600
2013-10-01	53.1234774457451
2014-01-01	54.7033398105502
2014-04-01	54.4050149212140
2014-07-01	53.4756287886500
2014-10-01	55.1693676247822
2015-01-01	56.3526435628221
2015-04-01	55.6664540740291
2015-07-01	54.5764485340303
2015-10-01	54.1388891810430
2016-01-01	56.8912299770768
2016-04-01	56.1275581335466
2016-07-01	54.2039165791893
2016-10-01	55.8800589430343
2017-01-01	57.0349539955611
2017-04-01	56.4589086568780
2017-07-01	55.6224715045252
2017-10-01	55.7823955626189
2018-01-01	57.5924920581042
2018-04-01	56.0598713183840