Quarter	Percent
2005-01-01	53.4598506278759
2005-04-01	54.1583411915658
2005-07-01	54.3725435400346
2005-10-01	54.4415602221040
2006-01-01	54.3649551067662
2006-04-01	55.1354994103940
2006-07-01	55.2369514007515
2006-10-01	55.3862578700555
2007-01-01	55.1761424655186
2007-04-01	55.7910101728773
2007-07-01	55.7728748760108
2007-10-01	55.9645111986579
2008-01-01	55.8084087932806
2008-04-01	56.4321922386529
2008-07-01	56.2521611142401
2008-10-01	56.5668754444709
2009-01-01	56.5552851547740
2009-04-01	57.1767203282106
2009-07-01	56.9158411952440
2009-10-01	56.9777533537498
2010-01-01	57.0674065638960
2010-04-01	57.6064210037479
2010-07-01	57.5685531793164
2010-10-01	57.3449849411070
2011-01-01	57.3958988839825
2011-04-01	58.0297929117268
2011-07-01	57.9499770594784
2011-10-01	58.1497712911872
2012-01-01	58.1319658107814
2012-04-01	58.8561572719077
2012-07-01	58.8751773813880
2012-10-01	59.3006958348315
2013-01-01	59.1930757372276
2013-04-01	59.6583501029799
2013-07-01	59.7936996326838
2013-10-01	60.0085252509747
2014-01-01	59.9051447587976
2014-04-01	60.5367572185904
2014-07-01	60.5677852804802
2014-10-01	60.8376094494892
2015-01-01	60.6503092157223
2015-04-01	61.1365129166508
2015-07-01	61.2816989113250
2015-10-01	61.5203934475229
2016-01-01	61.6584401328679
2016-04-01	62.1193764984052
2016-07-01	62.2066359483505
2016-10-01	62.4726782151674
2017-01-01	62.4841530503485
2017-04-01	63.0332061360830
2017-07-01	63.2501348028151
2017-10-01	63.4822724141678
2018-01-01	63.3557974015908
2018-04-01	63.8752327723641