Quarter	Percent
1995-01-01	82.1568824900000
1995-04-01	82.1075962100000
1995-07-01	82.8288882200000
1995-10-01	81.8406974400000
1996-01-01	80.8669216400000
1996-04-01	81.4735821600000
1996-07-01	81.4067454600000
1996-10-01	80.5907575000000
1997-01-01	79.3589258700000
1997-04-01	79.6081005100000
1997-07-01	80.2937348900000
1997-10-01	80.2321297000000
1998-01-01	78.9737869500000
1998-04-01	78.8275417100000
1998-07-01	79.0950639900000
1998-10-01	78.8691554900000
1999-01-01	77.7797752800000
1999-04-01	76.8983957200000
1999-07-01	78.0996114400000
1999-10-01	78.5452002100000
2000-01-01	77.4841895500000
2000-04-01	77.8379307400000
2000-07-01	78.4569480000000
2000-10-01	78.5744483000000
2001-01-01	77.7507547800000
2001-04-01	77.7648137300000
2001-07-01	77.0874751500000
2001-10-01	75.7079354600000
2002-01-01	75.4135954100000
2002-04-01	75.4381674400000
2002-07-01	75.8276533600000
2002-10-01	76.2297068100000
2003-01-01	76.0351216400000
2003-04-01	75.7522265900000
2003-07-01	75.6512705800000
2003-10-01	75.6087856100000
2004-01-01	76.5013468500000
2004-04-01	76.8326363100000
2004-07-01	75.6423351900000
2004-10-01	76.0701150300000
2005-01-01	75.9679052700000
2005-04-01	76.8322981400000
2005-07-01	76.7231376200000
2005-10-01	76.5731030200000
2006-01-01	76.9555862900000
2006-04-01	77.6025719500000
2006-07-01	77.0596753300000
2006-10-01	78.0168808500000
2007-01-01	79.0303030300000
2007-04-01	78.8317862800000
2007-07-01	78.8074496800000
2007-10-01	79.0964261600000
2008-01-01	79.8237095700000
2008-04-01	80.1502864400000
2008-07-01	79.3764810400000
2008-10-01	79.2044867500000
2009-01-01	78.1746031700000
2009-04-01	77.8089281900000
2009-07-01	77.5739772200000
2009-10-01	76.6217084100000
2010-01-01	77.2575250800000
2010-04-01	79.4958935100000
2010-07-01	79.0653415100000
2010-10-01	78.6210770200000
2011-01-01	78.3265705900000
2011-04-01	80.2523351500000
2011-07-01	79.8167684600000
2011-10-01	79.5577056000000
2012-01-01	80.7666666666667
2012-04-01	82.2666666666667
2012-07-01	82.2666666666667
2012-10-01	81.1000000000000
2013-01-01	81.0666666666666
2013-04-01	81.4333333333334
2013-07-01	82.4333333333334
2013-10-01	82.0333333333334
2014-01-01	82.3000000000000
2014-04-01	81.9333333333333
2014-07-01	81.8666666666667
2014-10-01	82.7666666666667
2015-01-01	82.7333333333333
2015-04-01	83.7666666666667
2015-07-01	83.2000000000000
2015-10-01	83.7666666666667
2016-01-01	82.9666666666667
2016-04-01	83.4000000000000
2016-07-01	83.8666666666666
2016-10-01	83.4333333333334
2017-01-01	83.6000000000000
2017-04-01	84.2666666666667
2017-07-01	83.6666666666667
2017-10-01	83.6333333333334
2018-01-01	83.2000000000000
2018-04-01	84.0000000000000
2018-07-01	83.5333333333334