Quarter	Percent
1995-01-01	66.4387464400000
1995-04-01	65.9453303000000
1995-07-01	65.0766609900000
1995-10-01	64.8984198600000
1996-01-01	63.4680134700000
1996-04-01	64.4011142100000
1996-07-01	65.4273030000000
1996-10-01	64.0926640900000
1997-01-01	61.5934065900000
1997-04-01	63.3717737500000
1997-07-01	60.6476399600000
1997-10-01	61.3026819900000
1998-01-01	59.6300326400000
1998-04-01	58.5444743900000
1998-07-01	59.9892299400000
1998-10-01	59.8060344800000
1999-01-01	61.1645299100000
1999-04-01	60.4122621600000
1999-07-01	58.4647739200000
1999-10-01	60.5138961700000
2000-01-01	60.2583979300000
2000-04-01	61.2328069300000
2000-07-01	58.2406471200000
2000-10-01	55.1758794000000
2001-01-01	59.5261599200000
2001-04-01	62.6277372300000
2001-07-01	60.0860420700000
2001-10-01	59.2417061600000
2002-01-01	60.8108108100000
2002-04-01	60.8915441200000
2002-07-01	60.7464028800000
2002-10-01	61.0395379800000
2003-01-01	62.0932277900000
2003-04-01	59.5403295800000
2003-07-01	59.8543273400000
2003-10-01	62.4468989000000
2004-01-01	61.5223755800000
2004-04-01	62.2268041200000
2004-07-01	64.5108473200000
2004-10-01	63.7944983800000
2005-01-01	62.6198083100000
2005-04-01	63.6684996100000
2005-07-01	63.8479441400000
2005-10-01	61.5117624400000
2006-01-01	62.6933232700000
2006-04-01	66.8032786900000
2006-07-01	65.9660767000000
2006-10-01	65.5547498200000
2007-01-01	66.9397933700000
2007-04-01	67.5515193900000
2007-07-01	67.3582296000000
2007-10-01	66.9288645700000
2008-01-01	68.6069986500000
2008-04-01	70.0795228600000
2008-07-01	67.5401244700000
2008-10-01	67.5000000000000
2009-01-01	67.4653215600000
2009-04-01	69.4704049800000
2009-07-01	68.6232329400000
2009-10-01	66.6261028300000
2010-01-01	67.0316301700000
2010-04-01	70.1318154600000
2010-07-01	69.9851411600000
2010-10-01	67.8560896500000
2011-01-01	68.3778234100000
2011-04-01	70.6071220100000
2011-07-01	72.5764192100000
2011-10-01	71.3370230100000
2012-01-01	72.3333333333333
2012-04-01	71.8666666666667
2012-07-01	70.1000000000000
2012-10-01	72.1666666666667
2013-01-01	74.1000000000000
2013-04-01	72.6666666666667
2013-07-01	71.9333333333334
2013-10-01	72.6333333333334
2014-01-01	73.8333333333333
2014-04-01	74.0666666666666
2014-07-01	72.1666666666667
2014-10-01	71.5333333333333
2015-01-01	72.9000000000000
2015-04-01	74.4333333333333
2015-07-01	74.0333333333333
2015-10-01	71.5000000000000
2016-01-01	72.1000000000000
2016-04-01	74.4333333333334
2016-07-01	73.8666666666666
2016-10-01	73.1333333333333
2017-01-01	74.1000000000000
2017-04-01	73.7333333333333
2017-07-01	74.6333333333333
2017-10-01	75.2000000000000
2018-01-01	74.7333333333333
2018-04-01	74.2000000000000
2018-07-01	72.9666666666667