Quarter	Percent
1995-01-01	68.6320191200000
1995-04-01	68.8040345800000
1995-07-01	69.6678790800000
1995-10-01	68.7307601200000
1996-01-01	67.8822701700000
1996-04-01	68.1477609300000
1996-07-01	68.8945274200000
1996-10-01	67.9837370400000
1997-01-01	67.0345298400000
1997-04-01	67.0981966200000
1997-07-01	68.9647428700000
1997-10-01	68.0447985700000
1998-01-01	67.1284142300000
1998-04-01	67.6778880800000
1998-07-01	67.8606855500000
1998-10-01	66.6812657400000
1999-01-01	66.7173747700000
1999-04-01	66.3304929300000
1999-07-01	67.5720561400000
1999-10-01	67.5756126100000
2000-01-01	66.1959213800000
2000-04-01	67.2475143900000
2000-07-01	68.1206134700000
2000-10-01	66.7802912900000
2001-01-01	65.8159081600000
2001-04-01	66.9707006400000
2001-07-01	68.4037273400000
2001-10-01	66.4232473800000
2002-01-01	66.2208195600000
2002-04-01	65.9022931200000
2002-07-01	66.6617100400000
2002-10-01	66.4759273900000
2003-01-01	66.1847152600000
2003-04-01	65.6776341600000
2003-07-01	66.8080128700000
2003-10-01	66.6262194800000
2004-01-01	66.4493068600000
2004-04-01	66.9727858400000
2004-07-01	67.5207126100000
2004-10-01	66.3265792600000
2005-01-01	65.9978179400000
2005-04-01	66.6367628300000
2005-07-01	67.8044193700000
2005-10-01	66.7213345200000
2006-01-01	66.6542421800000
2006-04-01	67.6005380600000
2006-07-01	67.4146927100000
2006-10-01	67.2613573700000
2007-01-01	67.7003293100000
2007-04-01	68.1390165100000
2007-07-01	68.5601774300000
2007-10-01	67.5071038700000
2008-01-01	68.0660949200000
2008-04-01	68.3526205300000
2008-07-01	68.0910667400000
2008-10-01	67.6989190100000
2009-01-01	67.6047148900000
2009-04-01	68.3615574500000
2009-07-01	67.9246096800000
2009-10-01	67.1877684200000
2010-01-01	67.1995542600000
2010-04-01	68.4024374700000
2010-07-01	69.1446028500000
2010-10-01	67.8556335100000
2011-01-01	67.5345466800000
2011-04-01	68.6665547100000
2011-07-01	69.0804886200000
2011-10-01	67.6912169500000
2012-01-01	75.1666666666667
2012-04-01	75.9333333333334
2012-07-01	76.5000000000000
2012-10-01	75.9333333333334
2013-01-01	75.9666666666666
2013-04-01	75.4666666666666
2013-07-01	76.5000000000000
2013-10-01	75.9000000000000
2014-01-01	75.9666666666667
2014-04-01	75.7000000000000
2014-07-01	76.3000000000000
2014-10-01	76.3000000000000
2015-01-01	75.6666666666666
2015-04-01	76.1333333333334
2015-07-01	76.7000000000000
2015-10-01	75.9333333333334
2016-01-01	75.2000000000000
2016-04-01	75.6666666666667
2016-07-01	76.3333333333333
2016-10-01	75.4000000000000
2017-01-01	75.2666666666667
2017-04-01	75.9333333333333
2017-07-01	76.0666666666666
2017-10-01	75.2333333333333
2018-01-01	74.5333333333334
2018-04-01	74.8000000000000
2018-07-01	75.0666666666667