Quarter Percent 2005-01-01 33.7913878353208 2005-04-01 33.4054425529344 2005-07-01 35.1625196611940 2005-10-01 34.9124352290491 2006-01-01 33.8028557776411 2006-04-01 34.3785650820270 2006-07-01 36.0594459747106 2006-10-01 35.6854378676026 2007-01-01 34.6841531280824 2007-04-01 34.0343729597089 2007-07-01 35.0294038647782 2007-10-01 36.6520805698744 2008-01-01 34.4278012992012 2008-04-01 34.3326782710317 2008-07-01 34.4334940742262 2008-10-01 33.3949939400883 2009-01-01 32.0521439152917 2009-04-01 32.1087651216306 2009-07-01 34.6712074658214 2009-10-01 34.7324967292934 2010-01-01 32.8807544593516 2010-04-01 33.1025740993677 2010-07-01 34.6268464312529 2010-10-01 32.5817785738668 2011-01-01 31.3803054660373 2011-04-01 32.8367262572972 2011-07-01 33.6630969436211 2011-10-01 35.2050889196747 2012-01-01 32.0571847503280 2012-04-01 34.0676734915917 2012-07-01 35.0016151621638 2012-10-01 34.0672231452776 2013-01-01 31.5902019152487 2013-04-01 33.6138261388017 2013-07-01 33.1860457924631 2013-10-01 33.9089930228835 2014-01-01 31.8711056332563 2014-04-01 32.1558444563994 2014-07-01 32.6124284623647 2014-10-01 31.3941333625594 2015-01-01 30.1516859269089 2015-04-01 31.0076407673998 2015-07-01 32.2051118225154 2015-10-01 32.9200410106883 2016-01-01 29.9933387091119 2016-04-01 30.9489425323749 2016-07-01 32.5670133857854 2016-10-01 31.2325468777934 2017-01-01 30.0428031847224 2017-04-01 30.3449766468927 2017-07-01 31.2925452717212 2017-10-01 31.3305985971713 2018-01-01 29.5664695765069 2018-04-01 31.4821320036789