Quarter	Percent
1998-01-01	54.9898167006110
1998-04-01	55.5793021248613
1998-07-01	55.3730363807883
1998-10-01	55.3181464334002
1999-01-01	55.3457702782954
1999-04-01	55.3894297635605
1999-07-01	55.6234044725825
1999-10-01	55.5877314625989
2000-01-01	55.9263333740782
2000-04-01	56.1965985840996
2000-07-01	56.6615900091380
2000-10-01	56.7068972500101
2001-01-01	56.7330435661579
2001-04-01	56.7825700670382
2001-07-01	56.8370819322232
2001-10-01	56.7061658967664
2002-01-01	56.3621484601106
2002-04-01	56.3466751714240
2002-07-01	56.1888278825495
2002-10-01	55.2977433144448
2003-01-01	54.8244742177871
2003-04-01	54.9390692404032
2003-07-01	55.0203595193167
2003-10-01	54.7701708096098
2004-01-01	54.5519485673466
2004-04-01	54.4120563156851
2004-07-01	54.1252229046959
2004-10-01	53.8437184636999
2005-01-01	53.5427926590248
2005-04-01	53.6600815550893
2005-07-01	53.5416872712887
2005-10-01	53.4669512966477
2006-01-01	53.7561284200538
2006-04-01	54.0368006008261
2006-07-01	54.0605677485628
2006-10-01	53.5081138705729
2007-01-01	53.5583779406246
2007-04-01	53.7128077553357
2007-07-01	53.9741110541063
2007-10-01	53.9132149901381
2008-01-01	53.9623013914931
2008-04-01	54.0294088621336
2008-07-01	53.6960296787434
2008-10-01	53.4501470036899
2009-01-01	52.2434631487479
2009-04-01	51.9238366121514
2009-07-01	51.1374856826889
2009-10-01	51.0040081347365
2010-01-01	51.0785108444216
2010-04-01	50.7397444519166
2010-07-01	50.8238226160571
2010-10-01	50.6221193598797
2011-01-01	49.7283793964868
2011-04-01	49.7718344510138
2011-07-01	49.7697407598555
2011-10-01	48.1780250347705
2012-01-01	47.4536760310819
2012-04-01	47.5959620142048
2012-07-01	47.1964203671521
2012-10-01	45.9947183098592
2013-01-01	45.1316423181891
2013-04-01	45.8539330358937
2013-07-01	46.5788996920104
2013-10-01	46.5819465456379
2014-01-01	46.0314246375638
2014-04-01	47.3031907340920
2014-07-01	47.9922779922780
2014-10-01	47.0564278005172