Quarter	Percent
1999-01-01	37.4692309231724
1999-04-01	37.9398143507288
1999-07-01	38.2709853556695
1999-10-01	38.4126984126984
2000-01-01	38.0227256715547
2000-04-01	38.3455389791581
2000-07-01	38.8422007255139
2000-10-01	39.1213536884378
2001-01-01	38.4186639063620
2001-04-01	38.4324270490987
2001-07-01	38.7739035983697
2001-10-01	38.5196781302037
2002-01-01	38.3172347728906
2002-04-01	38.6170743884174
2002-07-01	38.8247282608696
2002-10-01	38.8769481460747
2003-01-01	38.6249687265449
2003-04-01	39.3036719485567
2003-07-01	39.6144515508150
2003-10-01	39.6538577305107
2004-01-01	39.0977594695067
2004-04-01	39.1665996137753
2004-07-01	39.2935094195391
2004-10-01	39.3321394075982
2005-01-01	38.9499954715158
2005-04-01	39.1774891774892
2005-07-01	39.5532684115651
2005-10-01	39.4557617522013
2006-01-01	39.1360847797399
2006-04-01	39.6572407883462
2006-07-01	39.7997963689150
2006-10-01	39.8610424838908
2007-01-01	39.4013377589007
2007-04-01	39.7890699904123
2007-07-01	39.8542091553420
2007-10-01	39.4769261839846
2008-01-01	38.8357949609036
2008-04-01	39.1085455482880
2008-07-01	39.6810791134121
2008-10-01	39.2354511262992
2009-01-01	38.1119695420164
2009-04-01	38.4754126599722
2009-07-01	38.3655961953821
2009-10-01	38.3643333806616
2010-01-01	37.7329586381114
2010-04-01	38.3477263732584
2010-07-01	38.7988347661920
2010-10-01	38.6458756603007
2011-01-01	37.8968636728229
2011-04-01	38.7376300560398
2011-07-01	39.2334225333483
2011-10-01	39.2102154698383
2012-01-01	38.6421778969148
2012-04-01	39.5393434930738
2012-07-01	40.1557047527702
2012-10-01	39.9058636145513
2013-01-01	39.0038823048631
2013-04-01	40.2010409955926
2013-07-01	40.8151573433728
2013-10-01	41.0875638283720
2014-01-01	41.7663444207767
2014-04-01	42.2514275169918
2014-07-01	42.9008166112684