Quarterly Percent
1998-01-01 71.3
1999-01-01 71.6
1999-04-01 70.9
1999-07-01 71.3
1999-10-01 71
2000-01-01 71.3
2000-04-01 70.7
2000-07-01 71.1
2000-10-01 71
2001-01-01 70.7
2001-04-01 70.9
2001-07-01 71.1
2001-10-01 71.2
2002-01-01 71.6
2002-04-01 71.4
2002-07-01 71.8
2002-10-01 71.7
2003-01-01 71.7
2003-04-01 72.1
2003-07-01 72.4
2003-10-01 72
2004-01-01 69.4
2004-04-01 70.3
2004-07-01 71.3
2004-10-01 70.6
2005-01-01 70.1
2005-04-01 71.3
2005-07-01 72.7
2005-10-01 71.7
2006-01-01 71.3
2006-04-01 72.2
2006-07-01 73.5
2006-10-01 72.5
2007-01-01 72.4
2007-04-01 73.3
2007-07-01 74.9
2007-10-01 73.4
2008-01-01 73.2
2008-04-01 73.7
2008-07-01 74.6
2008-10-01 74
2009-01-01 73.3
2009-04-01 74.2
2009-07-01 75.4
2009-10-01 74.4
2010-01-01 73.5
2010-04-01 74.2
2010-07-01 75.4
2010-10-01 74.6
2011-01-01 73.8
2011-04-01 74.4
2011-07-01 75.3
2011-10-01 74.7
2012-01-01 73.9
2012-04-01 75.1
2012-07-01 76.2
2012-10-01 75.2
2013-01-01 74.7
2013-04-01 75.5
2013-07-01 76.5
2013-10-01 75.3
2014-01-01 74.7
2014-04-01 75.4
2014-07-01 76.2
2014-10-01 75.3
2015-01-01 74.7
2015-04-01 75.3
2015-07-01 76.4
2015-10-01 75.7
2016-01-01 75.2
2016-04-01 76.1
2016-07-01 77.4
2016-10-01 76.1
2017-01-01 75.5
2017-04-01 76.3
2017-07-01 77.1
2017-10-01 76.8
2018-01-01 76.0
2018-04-01 76.6