Quarterly Percent
1998-01-01 55.1
1998-04-01 56
1998-07-01 56.8
1998-10-01 56.1
1999-01-01 56.5
1999-04-01 55.3
1999-07-01 55.3
1999-10-01 55.8
2000-01-01 55.5
2000-04-01 55.7
2000-07-01 55.4
2000-10-01 54.3
2001-01-01 55.6
2001-04-01 54.9
2001-07-01 55
2001-10-01 55.5
2002-01-01 54.4
2002-04-01 55.3
2002-07-01 56.6
2002-10-01 57.3
2003-01-01 57.6
2003-04-01 58.4
2003-07-01 59
2003-10-01 59.9
2004-01-01 55.3
2004-04-01 56.4
2004-07-01 56.8
2004-10-01 57.1
2005-01-01 57.9
2005-04-01 58.9
2005-07-01 59.4
2005-10-01 59
2006-01-01 59
2006-04-01 59.3
2006-07-01 59.4
2006-10-01 59
2007-01-01 58.2
2007-04-01 58.6
2007-07-01 59.9
2007-10-01 59.6
2008-01-01 59.3
2008-04-01 59.2
2008-07-01 59.2
2008-10-01 59.1
2009-01-01 57.5
2009-04-01 57.9
2009-07-01 58
2009-10-01 57.6
2010-01-01 57
2010-04-01 56.7
2010-07-01 56.8
2010-10-01 55.8
2011-01-01 54.4
2011-04-01 54
2011-07-01 51.4
2011-10-01 49.6
2012-01-01 48.6
2012-04-01 48.1
2012-07-01 47.2
2012-10-01 46.8
2013-01-01 45.5
2013-04-01 46.6
2013-07-01 46.7
2013-10-01 45.1
2014-01-01 44.8
2014-04-01 44.2
2014-07-01 43.8
2014-10-01 43.1
2015-01-01 43.2
2015-04-01 44.5
2015-07-01 45.7
2015-10-01 46.3
2016-01-01 45.4
2016-04-01 45.4
2016-07-01 47.3
2016-10-01 46.7
2017-01-01 47.5
2017-04-01 49.1
2017-07-01 50.7
2017-10-01 50.9
2018-01-01 51.5
2018-04-01 52.8