Quarter	Percent
2003-04-01	52.4287763886042
2004-04-01	53.2588558383455
2005-01-01	54.2324467929342
2005-04-01	54.8595243797454
2005-07-01	54.9976646708755
2005-10-01	55.1723890194050
2006-01-01	55.0940481772290
2006-04-01	55.9012733946259
2006-07-01	56.0970793122277
2006-10-01	56.3135846096666
2007-01-01	56.1046109783127
2007-04-01	56.7445224213132
2007-07-01	56.9108541436800
2007-10-01	57.1239705294595
2008-01-01	56.9919620774938
2008-04-01	57.4796533764921
2008-07-01	57.1297145677039
2008-10-01	57.4657124248459
2009-01-01	56.9603015513335
2009-04-01	57.2755202518878
2009-07-01	56.6618411063310
2009-10-01	56.6749086639313
2010-01-01	56.8561895130036
2010-04-01	57.2172005358802
2010-07-01	57.1102777565973
2010-10-01	56.9727902851557
2011-01-01	57.0309906729200
2011-04-01	57.5399802410648
2011-07-01	57.3767564749523
2011-10-01	57.8661203726237
2012-01-01	57.8302503089623
2012-04-01	58.3175609164284
2012-07-01	58.4615243202272
2012-10-01	59.1702765061655
2013-01-01	59.0640077808644
2013-04-01	59.3519214416017
2013-07-01	59.5849896000831
2013-10-01	59.9033716165116
2014-01-01	59.9686967019238
2014-04-01	60.6132989183616
2014-07-01	60.7506256905695
2014-10-01	61.1056834207588
2015-01-01	60.8304318373787
2015-04-01	61.4038842242148
2015-07-01	61.4217302848084
2015-10-01	61.8665835545477
2016-01-01	61.9232421516178
2016-04-01	62.3568218040849
2016-07-01	62.3855047093298
2016-10-01	62.7388545969850
2017-01-01	62.8131547625577
2017-04-01	63.4746692662523
2017-07-01	63.5691849103193
2017-10-01	64.0172127523166
2018-01-01	63.8547827597532