Quarterly Percent
1999-01-01 49.6
2000-01-01 47
2000-04-01 47.5
2000-07-01 48
2000-10-01 47.4
2001-01-01 46.2
2001-04-01 46.4
2001-07-01 46.5
2001-10-01 45.5
2002-01-01 44.3
2002-04-01 44.6
2002-07-01 44.6
2002-10-01 44.1
2003-01-01 43.3
2003-04-01 44.1
2003-07-01 44.4
2003-10-01 44.2
2004-01-01 43.4
2004-04-01 44
2004-07-01 44.9
2004-10-01 45.1
2005-01-01 44.1
2005-04-01 44.6
2005-07-01 46
2005-10-01 45.9
2006-01-01 44.9
2006-04-01 46.1
2006-07-01 47.6
2006-10-01 47.5
2007-01-01 47.2
2007-04-01 48.4
2007-07-01 49.2
2007-10-01 49.5
2008-01-01 49.4
2008-04-01 50.1
2008-07-01 51
2008-10-01 51
2009-01-01 50
2009-04-01 50.4
2009-07-01 50.9
2009-10-01 50.4
2010-01-01 49.1
2010-04-01 50
2010-07-01 50.6
2010-10-01 50.2
2011-01-01 49.6
2011-04-01 50.3
2011-07-01 50.6
2011-10-01 50.3
2012-01-01 49.6
2012-04-01 50.3
2012-07-01 50.7
2012-10-01 50.4
2013-01-01 49.3
2013-04-01 50
2013-07-01 50.7
2013-10-01 50.6
2014-01-01 50.2
2014-04-01 51
2014-07-01 51.9
2014-10-01 51.7
2015-01-01 51.1
2015-04-01 51.6
2015-07-01 52.4
2015-10-01 52.6
2016-01-01 52.1
2016-04-01 52.7
2016-07-01 53.0
2016-10-01 53.2
2017-01-01 53.2
2017-04-01 53.9
2017-07-01 54.0
2017-10-01 53.7
2018-01-01 53.7
2018-04-01 54.4