Quarter	Percent, Not Seasonally adjusted
1999-01-01	60.1924517100000
1999-04-01	61.8943750400000
1999-07-01	63.0411057600000
1999-10-01	63.0898282100000
2000-01-01	62.1072437800000
2000-04-01	64.5749455200000
2000-07-01	64.3568480300000
2000-10-01	64.1359654300000
2001-01-01	62.4213766600000
2001-04-01	63.8192371800000
2001-07-01	64.3618991600000
2001-10-01	63.5928018900000
2002-01-01	63.5472043700000
2002-04-01	64.6421953100000
2002-07-01	65.9028612100000
2002-10-01	63.9258967700000
2003-01-01	62.1965081100000
2003-04-01	63.7798597200000
2003-07-01	65.2939501900000
2003-10-01	64.6526463700000
2004-01-01	63.3713600700000
2004-04-01	65.5819594800000
2004-07-01	65.8603288800000
2004-10-01	64.7908372700000
2005-01-01	64.4105434200000
2005-04-01	65.9781324900000
2005-07-01	66.7697102100000
2005-10-01	66.2981360500000
2006-01-01	64.8588560100000
2006-04-01	65.5455878200000
2006-07-01	67.1309241300000
2006-10-01	66.4489681300000
2007-01-01	66.4189159000000
2007-04-01	68.2883879100000
2007-07-01	68.7038291000000
2007-10-01	67.6785982100000
2008-01-01	67.5237322000000
2008-04-01	69.3802772200000
2008-07-01	69.5706190100000
2008-10-01	67.9075442300000
2009-01-01	65.4150146700000
2009-04-01	66.9858186100000
2009-07-01	67.8453876000000
2009-10-01	67.2315453366667
2010-01-01	66.1673625700000
2010-04-01	68.2429232900000
2010-07-01	69.1451353333333
2010-10-01	68.5242994333333
2011-01-01	67.8448614033333
2011-04-01	69.2464122733333
2011-07-01	70.1152399466667
2011-10-01	69.6293118233333
2012-01-01	68.8555382700000
2012-04-01	70.6938481533333
2012-07-01	71.3918622666667
2012-10-01	70.5603589966667
2013-01-01	69.8065439666667
2013-04-01	70.3182527433333
2013-07-01	70.8413837166667
2013-10-01	70.5951576333333
2014-01-01	70.0560288066666
2014-04-01	70.9076539166667
2014-07-01	71.6442086500000
2014-10-01	71.3689958100000
2015-01-01	70.3600705333333
2015-04-01	71.0212419233333
2015-07-01	71.8652196700000