Quarter	Percent
2005-01-01	59.5025969256962
2005-04-01	60.1750322003730
2005-07-01	60.4388091004959
2005-10-01	60.3603904048786
2006-01-01	60.0013680144092
2006-04-01	60.6501682388287
2006-07-01	60.9486073609302
2006-10-01	60.8158515810773
2007-01-01	60.3336349662382
2007-04-01	60.8536550557808
2007-07-01	61.0426718797232
2007-10-01	61.0867519927817
2008-01-01	60.6788073380005
2008-04-01	61.3963588652947
2008-07-01	61.4003618806584
2008-10-01	61.3184280097748
2009-01-01	60.9818318770199
2009-04-01	61.5787902323855
2009-07-01	61.7975536096364
2009-10-01	61.4919015348424
2010-01-01	61.1696513461010
2010-04-01	61.7344639665452
2010-07-01	61.7985265732100
2010-10-01	61.4734784215630
2011-01-01	61.2222772624172
2011-04-01	61.8940784062276
2011-07-01	61.9582194865816
2011-10-01	61.8785871957989
2012-01-01	61.5415773860744
2012-04-01	62.2985556053870
2012-07-01	62.3652088603161
2012-10-01	62.3224424107433
2013-01-01	62.0031029522166
2013-04-01	62.6491329112616
2013-07-01	62.6567271470305
2013-10-01	62.6101645949572
2014-01-01	62.3636901670894
2014-04-01	62.7932531050056
2014-07-01	62.8141112189868
2014-10-01	62.8866643968325
2015-01-01	62.4940160738935
2015-04-01	63.0705883807129
2015-07-01	63.0863687772357
2015-10-01	63.2702366050890
2016-01-01	63.0783343758437
2016-04-01	63.5094370036866
2016-07-01	63.7718416283492
2016-10-01	63.6765732031032
2017-01-01	63.5369687625986
2017-04-01	64.0056373292036
2017-07-01	64.2234650171426
2017-10-01	64.2035615597220
2018-01-01	64.0410005171813
2018-04-01	64.5159961770162