Quarterly Percent
1999-04-01 55.2
1999-07-01 57.6
1999-10-01 57.5
2000-01-01 56.3
2000-04-01 55.8
2000-07-01 57.9
2000-10-01 56.6
2001-01-01 55.8
2001-04-01 55.5
2001-07-01 57.8
2001-10-01 57.4
2002-01-01 55.9
2002-04-01 55.6
2002-07-01 56.9
2002-10-01 56.4
2003-01-01 55.3
2003-04-01 54.2
2003-07-01 55.9
2003-10-01 56.4
2004-01-01 55.6
2004-04-01 55.0
2004-07-01 56.2
2004-10-01 55.6
2005-01-01 54.9
2005-04-01 53.3
2005-07-01 55.1
2005-10-01 53.9
2006-01-01 52.9
2006-04-01 52.7
2006-07-01 54.9
2006-10-01 54.1
2007-01-01 52.1
2007-04-01 51.3
2007-07-01 53.5
2007-10-01 53.6
2008-01-01 52.1
2008-04-01 51.6
2008-07-01 52.9
2008-10-01 51.6
2009-01-01 48.7
2009-04-01 47.3
2009-07-01 48.2
2009-10-01 47.3
2010-01-01 45.5
2010-04-01 46.3
2010-07-01 48.7
2010-10-01 46.8
2011-01-01 45.2
2011-04-01 45.5
2011-07-01 46.5
2011-10-01 46
2012-01-01 44.6
2012-04-01 45.5
2012-07-01 47.4
2012-10-01 47.3
2013-01-01 45.6
2013-04-01 44.8
2013-07-01 47.4
2013-10-01 47.2
2014-01-01 46.1
2014-04-01 47.3
2014-07-01 49.5
2014-10-01 49.1
2015-01-01 48.6
2015-04-01 48.7
2015-07-01 51.4
2015-10-01 51.3
2016-01-01 50.2
2016-04-01 50.0
2016-07-01 51.6
2016-10-01 51.6
2017-01-01 50.4
2017-04-01 50.1
2017-07-01 51.0
2017-10-01 51.1
2018-01-01 50.4
2018-04-01 50.1