Quarterly Percent
1999-04-01 59.3
2000-04-01 58.6
2001-04-01 57.6
2002-04-01 56.5
2003-01-01 56.3
2003-04-01 56.3
2003-07-01 56.3
2003-10-01 56.3
2004-01-01 54.6
2004-04-01 54.6
2004-07-01 54.6
2004-10-01 54.6
2005-01-01 53.7
2005-04-01 53.7
2005-07-01 53.7
2005-10-01 53.7
2006-01-01 50.6
2006-04-01 50.6
2006-07-01 50.6
2006-10-01 50.6
2007-01-01 49.6
2007-04-01 51.7
2007-07-01 49.2
2007-10-01 48
2008-01-01 51.9
2008-04-01 51.2
2008-07-01 52.2
2008-10-01 52.5
2009-01-01 49.4
2009-04-01 50.5
2009-07-01 50.3
2009-10-01 50.2
2010-01-01 50.2
2010-04-01 51.1
2010-07-01 49.8
2010-10-01 49.8
2011-01-01 48.8
2011-04-01 50.3
2011-07-01 50
2011-10-01 49.9
2012-01-01 49.1
2012-04-01 48.9
2012-07-01 46.6
2012-10-01 47.8
2013-01-01 47.7
2013-04-01 47
2013-07-01 48.1
2013-10-01 47.3
2014-01-01 46.7
2014-04-01 47
2014-07-01 46.8
2014-10-01 45.7
2015-01-01 44.6
2015-04-01 45.2
2015-07-01 45.8
2015-10-01 46.2
2016-01-01 46.9
2016-04-01 47.2
2016-07-01 46.0
2016-10-01 45.9
2017-01-01 45.2
2017-04-01 45.7
2017-07-01 43.7
2017-10-01 45.5
2018-01-01 43.9
2018-04-01 45.1