Quarterly Percent
1999-04-01 76.1
2000-04-01 77.7
2001-04-01 76.7
2002-04-01 76.2
2003-01-01 73.3
2003-04-01 75.6
2003-07-01 77.7
2003-10-01 73.1
2004-01-01 73.2
2004-04-01 74.7
2004-07-01 73.8
2004-10-01 72.3
2005-01-01 74.5
2005-04-01 75.8
2005-07-01 74.9
2005-10-01 75.4
2006-01-01 75.1
2006-04-01 76.2
2006-07-01 75.9
2006-10-01 74.3
2007-01-01 75.8
2007-04-01 77.5
2007-07-01 76.3
2007-10-01 74.4
2008-01-01 73.9
2008-04-01 75.9
2008-07-01 75.8
2008-10-01 74.5
2009-01-01 71.2
2009-04-01 71
2009-07-01 73.1
2009-10-01 73
2010-01-01 71.4
2010-04-01 72
2010-07-01 72
2010-10-01 71
2011-01-01 71.2
2011-04-01 73.8
2011-07-01 72.1
2011-10-01 69.6
2012-01-01 70.5
2012-04-01 74
2012-07-01 73.4
2012-10-01 72.9
2013-01-01 71.5
2013-04-01 74
2013-07-01 75.4
2013-10-01 73.9
2014-01-01 72.5
2014-04-01 75.4
2014-07-01 76.1
2014-10-01 75.5
2015-01-01 74.9
2015-04-01 76.9
2015-07-01 76.5
2015-10-01 77.4
2016-01-01 75.9
2016-04-01 77.8
2016-07-01 78.4
2016-10-01 77.2
2017-01-01 77.1
2017-04-01 77.2
2017-07-01 76.2
2017-10-01 76.5
2018-01-01 75.3
2018-04-01 76.1