Quarter	Percent
1999-04-01	48.9243161172444
2000-01-01	49.3878620883652
2000-04-01	50.1659539158741
2000-07-01	50.5037502469364
2000-10-01	50.7164308256134
2001-01-01	50.6400100000000
2001-04-01	50.9746700000000
2001-07-01	51.0455800000000
2001-10-01	51.1366400000000
2002-01-01	50.8359300000000
2002-04-01	51.2678400000000
2002-07-01	51.3757700000000
2002-10-01	51.1759800000000
2003-01-01	50.6579400000000
2003-04-01	50.7001000000000
2003-07-01	50.7935700000000
2003-10-01	50.4166300000000
2004-01-01	50.0891900000000
2004-04-01	50.2917600000000
2004-07-01	50.5323000000000
2004-10-01	50.2402800000000
2005-01-01	49.8760600000000
2005-04-01	50.3803500000000
2005-07-01	50.6014400000000
2005-10-01	50.5627000000000
2006-01-01	50.6265800000000
2006-04-01	51.0696100000000
2006-07-01	51.3730800000000
2006-10-01	51.6430700000000
2007-01-01	51.7249900000000
2007-04-01	52.3564300000000
2007-07-01	52.5966200000000
2007-10-01	52.5586500000000
2008-01-01	52.5471600000000
2008-04-01	53.0059000000000
2008-07-01	53.2536400000000
2008-10-01	53.4826200000000
2009-01-01	53.3534900000000
2009-04-01	53.0354000000000
2009-07-01	52.8855700000000
2009-10-01	52.6752400000000
2010-01-01	50.9787800000000
2010-04-01	51.2148200000000
2010-07-01	51.3242500000000
2010-10-01	51.2548300000000
2011-01-01	50.8201400000000
2011-04-01	50.9049100000000
2011-07-01	51.1279100000000
2011-10-01	51.2579900000000
2012-01-01	50.9631800000000
2012-04-01	51.0784500000000
2012-07-01	51.1644200000000
2012-10-01	50.9291800000000
2013-01-01	50.3636200000000
2013-04-01	50.3737900000000
2013-07-01	50.3610800000000
2013-10-01	50.1937300000000
2014-01-01	49.5440100000000
2014-04-01	49.7745700000000
2014-07-01	50.1473800000000