Quarter	Percent
1999-01-01	49.5742661649445
2000-01-01	46.9659398042457
2000-04-01	47.5436625806853
2000-07-01	47.9795659723919
2000-10-01	47.4050575132372
2001-01-01	46.1792566769162
2001-04-01	46.4048137692556
2001-07-01	46.5240399544561
2001-10-01	45.4687333046240
2002-01-01	44.2777481452747
2002-04-01	44.5924013874324
2002-07-01	44.6097955827370
2002-10-01	44.1199922834544
2003-01-01	43.2544273238387
2003-04-01	44.0506410773325
2003-07-01	44.4204919701754
2003-10-01	44.2430868664977
2004-01-01	43.3607372986968
2004-04-01	44.0000514533977
2004-07-01	44.8540696741050
2004-10-01	45.0642552386692
2005-01-01	44.0709381052227
2005-04-01	44.6436459313603
2005-07-01	45.9959188772748
2005-10-01	45.9223468287047
2006-01-01	37.6277103417353
2006-04-01	38.5363058513119
2006-07-01	39.8574751985453
2006-10-01	39.8712786040119
2007-01-01	39.6876721707827
2007-04-01	40.6916257798044
2007-07-01	41.4441245662846
2007-10-01	41.7174553909434
2008-01-01	41.6666666666667
2008-04-01	42.2643003766022
2008-07-01	43.0680388824396
2008-10-01	43.0856905964315
2009-01-01	42.3026707190025
2009-04-01	42.6039193756100
2009-07-01	43.0712254693807
2009-10-01	42.6635762514302
2010-01-01	41.5007971036289
2010-04-01	42.3168404533947
2010-07-01	42.8560886819061
2010-10-01	42.5001912380203
2011-01-01	41.9610682330442
2011-04-01	42.5856375941658
2011-07-01	42.8910243974414
2011-10-01	42.6400985380428
2012-01-01	42.0568737725650
2012-04-01	42.6378105484010
2012-07-01	42.9485008086018
2012-10-01	42.7014774558265
2013-01-01	41.7711352541530
2013-04-01	42.4490911575782
2013-07-01	43.0299384825701
2013-10-01	42.9561832278100
2014-01-01	42.5860244311299
2014-04-01	43.2795942024220
2014-07-01	44.0199071511179