Quarterly Percent
1998-01-01 67.6
1998-04-01 66.9
1998-07-01 65.4
1998-10-01 64.4
1999-01-01 66.6
1999-04-01 66.2
1999-07-01 65.6
1999-10-01 65.7
2000-01-01 66.8
2000-04-01 66
2000-07-01 64.8
2000-10-01 65.2
2001-01-01 67.3
2001-04-01 67.5
2001-07-01 67.4
2001-10-01 67.3
2002-01-01 69
2002-04-01 69.1
2002-07-01 68.8
2002-10-01 69.1
2003-01-01 70.1
2003-04-01 69.9
2003-07-01 69.1
2003-10-01 71.5
2004-01-01 68.3
2004-04-01 68.1
2004-07-01 67.7
2004-10-01 68.9
2005-01-01 71.1
2005-04-01 71.9
2005-07-01 71.5
2005-10-01 70.5
2006-01-01 71.5
2006-04-01 73.9
2006-07-01 74.1
2006-10-01 73.1
2007-01-01 75.2
2007-04-01 74.9
2007-07-01 74.1
2007-10-01 74
2008-01-01 74
2008-04-01 74.5
2008-07-01 74.5
2008-10-01 74.9
2009-01-01 75.6
2009-04-01 76.4
2009-07-01 77.1
2009-10-01 76.2
2010-01-01 76.8
2010-04-01 77
2010-07-01 77.6
2010-10-01 76
2011-01-01 77.3
2011-04-01 78.1
2011-07-01 77.9
2011-10-01 75.6
2012-01-01 75.9
2012-04-01 76.6
2012-07-01 76.2
2012-10-01 75.3
2013-01-01 76.3
2013-04-01 77.3
2013-07-01 76.9
2013-10-01 75.9
2014-01-01 77.1
2014-04-01 77
2014-07-01 76.8
2014-10-01 76.7
2015-01-01 78.2
2015-04-01 78.4
2015-07-01 78.9
2015-10-01 77.8
2016-01-01 77.9
2016-04-01 77.0
2016-07-01 77.2
2016-10-01 76.9
2017-01-01 77.9
2017-04-01 78.0
2017-07-01 77.7
2017-10-01 78.0
2018-01-01 77.8
2018-04-01 78.3