Quarter Percent 2005-01-01 40.5904592896582 2005-04-01 39.9925430128268 2005-07-01 39.7078347585620 2005-10-01 39.9797471456791 2006-01-01 40.4064412429121 2006-04-01 39.8181528477121 2006-07-01 39.5264781466191 2006-10-01 39.7589022532316 2007-01-01 40.2999685719618 2007-04-01 39.7416533686244 2007-07-01 39.5510618678791 2007-10-01 39.7475185442836 2008-01-01 40.1946829611819 2008-04-01 39.5518180014603 2008-07-01 39.4143492980043 2008-10-01 39.7858197109921 2009-01-01 40.2428935913323 2009-04-01 39.7864905344487 2009-07-01 39.6611108206312 2009-10-01 40.0623283021382 2010-01-01 40.4009912644873 2010-04-01 39.8770893314791 2010-07-01 39.8257164533016 2010-10-01 40.2769969396715 2011-01-01 40.5746052944904 2011-04-01 40.0379482607273 2011-07-01 39.9329338946094 2011-10-01 40.1503169375331 2012-01-01 40.5707976723250 2012-04-01 39.9153551517238 2012-07-01 39.8352106276411 2012-10-01 40.1147695292743 2013-01-01 40.5215608304632 2013-04-01 39.9361714374073 2013-07-01 39.9158015846748 2013-10-01 40.2132298324844 2014-01-01 40.5502854676754 2014-04-01 40.1391779358298 2014-07-01 40.0255719404858 2014-10-01 40.2622690604758 2015-01-01 40.5837868241534 2015-04-01 40.1442473521951 2015-07-01 40.0597256131202 2015-10-01 40.1802406499653 2016-01-01 40.3904260124192 2016-04-01 39.9416293014065 2016-07-01 39.7519911614242 2016-10-01 40.0208018571525 2017-01-01 40.2598925467564 2017-04-01 39.8078859973134 2017-07-01 39.6111902695932 2017-10-01 39.8905011912618 2018-01-01 40.0767575086196 2018-04-01 39.5845768514286