Quarter	Percent
2005-01-01	59.5178237661492
2005-04-01	59.6830820650365
2005-07-01	60.2750825394121
2005-10-01	60.7377151212066
2006-01-01	60.4097764212806
2006-04-01	60.9442787163448
2006-07-01	61.1486924753273
2006-10-01	61.3472002972308
2007-01-01	60.4494405396085
2007-04-01	61.0037680304795
2007-07-01	60.6717558719154
2007-10-01	61.8793392529710
2008-01-01	60.7099807117946
2008-04-01	61.2721628621105
2008-07-01	60.6128058616422
2008-10-01	60.0684991330414
2009-01-01	59.2688849724720
2009-04-01	59.3894552336859
2009-07-01	59.9697624595552
2009-10-01	60.5079193726733
2010-01-01	59.2988057135550
2010-04-01	60.2998632587911
2010-07-01	59.9104442885028
2010-10-01	59.1363141381526
2011-01-01	59.0648621819685
2011-04-01	59.8246525105301
2011-07-01	60.0686062498042
2011-10-01	61.1390229908615
2012-01-01	60.0612152539504
2012-04-01	61.3369382324367
2012-07-01	61.4439825540793
2012-10-01	60.7935201756586
2013-01-01	59.9827926178605
2013-04-01	61.0158827686568
2013-07-01	60.8397893665218
2013-10-01	61.5303254098297
2014-01-01	60.3673438439907
2014-04-01	60.4403901517247
2014-07-01	60.3334563842796
2014-10-01	60.4910105229035
2015-01-01	60.1784602342624
2015-04-01	60.5677645140310
2015-07-01	60.6995000295376
2015-10-01	61.5348806859398
2016-01-01	60.4516733593589
2016-04-01	60.9304960429503
2016-07-01	61.4747115415373
2016-10-01	61.3318064343714
2017-01-01	60.9546702671863
2017-04-01	61.1037459316379
2017-07-01	61.1118363500774
2017-10-01	61.3442861400853
2018-01-01	60.9923783881556
2018-04-01	61.5998018057286