Quarter	Percent
1999-04-01	56.6749161019475
2000-01-01	56.9768339768340
2000-04-01	57.7214148967608
2000-07-01	57.9326799733183
2000-10-01	58.2014241073716
2001-01-01	57.9476300000000
2001-04-01	58.1636300000000
2001-07-01	58.1775200000000
2001-10-01	58.3019600000000
2002-01-01	57.6886100000000
2002-04-01	58.3235500000000
2002-07-01	58.0081900000000
2002-10-01	57.6592300000000
2003-01-01	56.8516500000000
2003-04-01	57.0592600000000
2003-07-01	57.0724600000000
2003-10-01	56.7024400000000
2004-01-01	56.2145900000000
2004-04-01	56.4359400000000
2004-07-01	56.5606800000000
2004-10-01	56.1339000000000
2005-01-01	55.6820200000000
2005-04-01	56.1383700000000
2005-07-01	56.3398400000000
2005-10-01	56.2185000000000
2006-01-01	56.2237500000000
2006-04-01	56.7503700000000
2006-07-01	57.1316200000000
2006-10-01	57.3320400000000
2007-01-01	57.2191300000000
2007-04-01	57.7721500000000
2007-07-01	58.0945900000000
2007-10-01	57.8287900000000
2008-01-01	57.7051100000000
2008-04-01	58.3733100000000
2008-07-01	58.3215000000000
2008-10-01	58.6153200000000
2009-01-01	58.1364100000000
2009-04-01	57.9585600000000
2009-07-01	57.7070400000000
2009-10-01	57.3892100000000
2010-01-01	55.7754600000000
2010-04-01	55.8720100000000
2010-07-01	55.9739000000000
2010-10-01	55.7915600000000
2011-01-01	55.1616200000000
2011-04-01	55.1037800000000
2011-07-01	55.5681300000000
2011-10-01	55.5998100000000
2012-01-01	55.3306100000000
2012-04-01	55.3832100000000
2012-07-01	55.3415700000000
2012-10-01	55.0041400000000
2013-01-01	54.3516000000000
2013-04-01	54.3526800000000
2013-07-01	54.3919600000000
2013-10-01	54.2906900000000
2014-01-01	53.8843000000000
2014-04-01	54.2255400000000
2014-07-01	54.5408400000000