Quarterly Percent
1998-01-01 43.5
1998-04-01 44.5
1998-07-01 44.9
1998-10-01 45.4
1999-01-01 44.9
1999-04-01 45.6
1999-07-01 45.7
1999-10-01 45.8
2000-01-01 45.3
2000-04-01 46.2
2000-07-01 46.7
2000-10-01 47
2001-01-01 46.8
2001-04-01 47.1
2001-07-01 47.5
2001-10-01 47.7
2002-01-01 47.4
2002-04-01 48
2002-07-01 48.1
2002-10-01 48.1
2003-01-01 47.8
2003-04-01 48.7
2003-07-01 48.6
2003-10-01 48.3
2004-01-01 50.7
2004-04-01 50.6
2004-07-01 50.5
2004-10-01 51.4
2005-01-01 50.5
2005-04-01 50.4
2005-07-01 49.7
2005-10-01 51.3
2006-01-01 50.9
2006-04-01 51
2006-07-01 50.1
2006-10-01 51.2
2007-01-01 49.9
2007-04-01 50.5
2007-07-01 50.7
2007-10-01 51.5
2008-01-01 51.6
2008-04-01 52.1
2008-07-01 51.3
2008-10-01 51.6
2009-01-01 51.2
2009-04-01 51.5
2009-07-01 50.4
2009-10-01 51.4
2010-01-01 51.1
2010-04-01 51.4
2010-07-01 50.2
2010-10-01 51.6
2011-01-01 51.4
2011-04-01 51.3
2011-07-01 50.6
2011-10-01 52.5
2012-01-01 53.3
2012-04-01 53.7
2012-07-01 52.7
2012-10-01 54
2013-01-01 54
2013-04-01 53.5
2013-07-01 52.6
2013-10-01 54.2
2014-01-01 54.4
2014-04-01 54.1
2014-07-01 53.7
2014-10-01 55.4
2015-01-01 54.4
2015-04-01 54.4
2015-07-01 53.1
2015-10-01 54.5
2016-01-01 54.4
2016-04-01 55.7
2016-07-01 54.8
2016-10-01 55.9
2017-01-01 55.8
2017-04-01 56.0
2017-07-01 55.7
2017-10-01 56.3
2018-01-01 56.2
2018-04-01 57.0