Quarter	Percent
1998-04-01	45.3160017929180
1998-10-01	46.3469296279695
1999-04-01	45.8812868146806
1999-10-01	45.0602191433487
2000-04-01	44.2063998541344
2000-10-01	43.2035737077218
2001-04-01	44.0327282986927
2001-10-01	44.6752514334054
2002-01-01	44.9517623459738
2002-04-01	45.7282110091743
2002-07-01	48.3299837305005
2002-10-01	46.4927370030581
2003-01-01	47.2168534982605
2003-04-01	46.6692448999323
2003-07-01	48.0730223123732
2003-10-01	47.2479721900348
2004-01-01	47.0163806552262
2004-04-01	48.1279251170047
2004-07-01	48.2899736919030
2004-10-01	47.6371431355354
2005-01-01	48.4803631340043
2005-04-01	48.2908516103537
2005-07-01	50.0345201696420
2005-10-01	49.3234567901234
2006-01-01	51.3912436421661
2006-04-01	50.8020324798246
2006-07-01	54.5354973613462
2006-10-01	52.7631185900627
2007-01-01	52.1682393093756
2007-04-01	53.6739610519976
2007-07-01	55.8723147962256
2007-10-01	55.1696446496687
2008-01-01	54.1127728375101
2008-04-01	54.7089733225546
2008-07-01	54.2340339531124
2008-10-01	51.7279708973323
2009-01-01	47.6419930285011
2009-04-01	45.3249948738979
2009-07-01	43.7256510149682
2009-10-01	41.6957145786344
2010-01-01	40.1362683438155
2010-04-01	41.5408805031447
2010-07-01	43.3962264150943
2010-10-01	43.7316561844864
2011-01-01	43.3118971061093
2011-04-01	44.0192926045016
2011-07-01	45.3054662379421
2011-10-01	45.7770632368703
2012-01-01	44.9275362318841
2012-04-01	46.0608041843740
2012-07-01	48.0658167157023
2012-10-01	47.5972540045767
2013-01-01	47.2447859495060
2013-04-01	47.5192096597146
2013-07-01	49.2425905598244
2013-10-01	49.4511525795829
2014-01-01	47.7661702600578
2014-04-01	48.3702302814551
2014-07-01	49.2316258351893