Quarter	Percent
1999-04-01	66.9983521358854
2000-01-01	66.0515210682119
2000-04-01	66.9480314960630
2000-07-01	66.9649609276531
2000-10-01	66.4062007687945
2001-01-01	66.1206301387058
2001-04-01	66.9868173258004
2001-07-01	66.8906613075426
2001-10-01	67.0979086855492
2002-01-01	66.9308537194209
2002-04-01	67.5881435257410
2002-07-01	67.3382820784730
2002-10-01	66.6043264135652
2003-01-01	65.8905127569978
2003-04-01	66.3735991579469
2003-07-01	66.8214750139328
2003-10-01	66.1341259520713
2004-01-01	65.3392330383481
2004-04-01	66.3737479260124
2004-07-01	66.3756532431602
2004-10-01	65.9952097279371
2005-01-01	65.0892258968268
2005-04-01	65.4485656860954
2005-07-01	66.2041263465401
2005-10-01	65.8370352339804
2006-01-01	65.1748418665712
2006-04-01	65.9069269221614
2006-07-01	66.3561383729900
2006-10-01	66.4615020417826
2007-01-01	66.7237106101735
2007-04-01	67.5554770734004
2007-07-01	67.9671457905544
2007-10-01	68.5729306618377
2008-01-01	68.8067520372526
2008-04-01	69.1174765162936
2008-07-01	69.1226649702157
2008-10-01	68.6812870546250
2009-01-01	68.5312679288583
2009-04-01	68.2735746554583
2009-07-01	67.6261043032203
2009-10-01	67.2641669975608
2010-01-01	66.6101886366204
2010-04-01	66.9594100095704
2010-07-01	66.5115496748150
2010-10-01	66.4023232436055
2011-01-01	66.5387823185988
2011-04-01	66.7479494568832
2011-07-01	66.5819848677307
2011-10-01	66.4375652938912
2012-01-01	66.5278842993316
2012-04-01	67.2616123574041
2012-07-01	66.6666666666666
2012-10-01	66.1177617680516
2013-01-01	65.8316687361658
2013-04-01	66.2234185733513
2013-07-01	66.2785706620882
2013-10-01	66.1426585391937
2014-01-01	65.5060253812520
2014-04-01	66.3564324841780
2014-07-01	65.7654792196777