Quarter	Percent
2005-01-01	77.0074241941386
2005-04-01	76.6594978140232
2005-07-01	76.5851549401036
2005-10-01	76.3935980381211
2006-01-01	77.7343038773984
2006-04-01	77.5518055232295
2006-07-01	77.2548874681252
2006-10-01	76.9314546320877
2007-01-01	77.7977149216972
2007-04-01	77.2672409365393
2007-07-01	76.8361829047585
2007-10-01	77.6483016118751
2008-01-01	78.5244509293640
2008-04-01	78.0444017717231
2008-07-01	77.7730843658840
2008-10-01	77.9227495342124
2009-01-01	77.8928453463157
2009-04-01	77.5528820871656
2009-07-01	77.1379770483053
2009-10-01	76.7464687617463
2010-01-01	77.5536952103678
2010-04-01	77.5279332320307
2010-07-01	78.2146831272836
2010-10-01	78.0756013745704
2011-01-01	78.9721928160408
2011-04-01	78.4015595903979
2011-07-01	78.5951950535775
2011-10-01	78.2445750404665
2012-01-01	78.5713288348826
2012-04-01	77.9704416882159
2012-07-01	77.5044488216855
2012-10-01	78.0762971012053
2013-01-01	78.6311091271224
2013-04-01	77.8901380756956
2013-07-01	77.6413759391919
2013-10-01	78.1261042508471
2014-01-01	78.2265363865220
2014-04-01	77.7611672849909
2014-07-01	76.9704893620548
2014-10-01	77.5390355574809
2015-01-01	78.0616096089391
2015-04-01	77.6779858080848
2015-07-01	77.5242063174277
2015-10-01	77.5329349145975
2016-01-01	77.6342166941454
2016-04-01	77.2300193518333
2016-07-01	77.3373859587495
2016-10-01	77.2052139038624
2017-01-01	78.0062943164615
2017-04-01	77.5394384180328
2017-07-01	77.3826610624780
2017-10-01	77.5849032190484
2018-01-01	77.4693021991641
2018-04-01	77.5921826730420
2018-07-01	76.9676080213499