Quarter	Percent
2005-01-01	56.7103502925447
2005-04-01	56.8340491102450
2005-07-01	57.4811101762856
2005-10-01	57.8368761296596
2006-01-01	57.5324655902750
2006-04-01	57.9530711976075
2006-07-01	58.1274040695011
2006-10-01	58.3324625134612
2007-01-01	57.3919682962435
2007-04-01	57.9311277184152
2007-07-01	57.5917335920334
2007-10-01	58.7660425713417
2008-01-01	57.6352548258076
2008-04-01	58.2841904549545
2008-07-01	57.5856871784548
2008-10-01	56.9580102640836
2009-01-01	56.1807933661335
2009-04-01	56.3146742717586
2009-07-01	56.8624095643260
2009-10-01	57.3629919125512
2010-01-01	56.1844945155424
2010-04-01	57.1813111687925
2010-07-01	56.7879750381060
2010-10-01	55.8361319544250
2011-01-01	55.6788383376836
2011-04-01	56.5002828774316
2011-07-01	56.7844803567439
2011-10-01	57.6866644772210
2012-01-01	56.6970213701061
2012-04-01	57.9445921417228
2012-07-01	57.9737089248497
2012-10-01	57.2046516630758
2013-01-01	56.4430496215687
2013-04-01	57.4786680112807
2013-07-01	57.3436546987976
2013-10-01	57.9893067584301
2014-01-01	56.8854155354225
2014-04-01	56.9380823568453
2014-07-01	56.7927764913923
2014-10-01	56.9282851749365
2015-01-01	56.6727954966862
2015-04-01	57.0754077458482
2015-07-01	57.2017748308432
2015-10-01	57.9069032378513
2016-01-01	56.8168734781733
2016-04-01	57.2916299429337
2016-07-01	57.7702014962102
2016-10-01	57.6097846615807
2017-01-01	57.2123721597105
2017-04-01	57.2861366560060
2017-07-01	57.3021286410930
2017-10-01	57.4354545648326
2018-01-01	57.0995381935095
2018-04-01	57.7915150835295