Quarterly Percent
1998-04-01 41
1999-01-01 43.3
1999-04-01 43.4
1999-07-01 43.9
1999-10-01 43.5
2000-01-01 43.7
2000-04-01 44.9
2000-07-01 45
2000-10-01 44.4
2001-01-01 44.3
2001-04-01 43.9
2001-07-01 44.2
2001-10-01 44
2002-01-01 44
2002-04-01 44.3
2002-07-01 44.9
2002-10-01 45
2003-01-01 44.7
2003-04-01 44.6
2003-07-01 44.7
2003-10-01 45.8
2004-01-01 45.2
2004-04-01 46
2004-07-01 45.6
2004-10-01 46.3
2005-01-01 46.7
2005-04-01 47.1
2005-07-01 46.6
2005-10-01 47
2006-01-01 46.7
2006-04-01 47
2006-07-01 47.4
2006-10-01 48
2007-01-01 47.8
2007-04-01 48.2
2007-07-01 48.6
2007-10-01 49.8
2008-01-01 49.7
2008-04-01 49.1
2008-07-01 49.9
2008-10-01 49.3
2009-01-01 49.3
2009-04-01 49.4
2009-07-01 49.2
2009-10-01 49.6
2010-01-01 50.1
2010-04-01 49
2010-07-01 49.7
2010-10-01 50.9
2011-01-01 49.4
2011-04-01 50.4
2011-07-01 50.1
2011-10-01 50.1
2012-01-01 49.5
2012-04-01 49.5
2012-07-01 50.3
2012-10-01 50.7
2013-01-01 49.8
2013-04-01 49.8
2013-07-01 51.1
2013-10-01 50.2
2014-01-01 50.1
2014-04-01 51
2014-07-01 51.2
2014-10-01 50.9
2015-01-01 50.9
2015-04-01 50.4
2015-07-01 50.8
2015-10-01 51.0
2016-01-01 50.3
2016-04-01 49.8
2016-07-01 50.3
2016-10-01 51.9
2017-01-01 50.1
2017-04-01 50.8
2017-07-01 51.3
2017-10-01 51.8
2018-01-01 52.0
2018-04-01 51.6