Quarterly Percent
1999-04-01 53.9
2000-04-01 53.7
2001-04-01 53.4
2002-04-01 52.8
2003-04-01 52.2
2004-04-01 50.5
2005-01-01 51.9
2005-04-01 51.5
2005-07-01 53.7
2005-10-01 52.6
2006-01-01 53.3
2006-04-01 52.2
2006-07-01 53.3
2006-10-01 53.8
2007-01-01 54.4
2007-04-01 51.7
2007-07-01 55.5
2007-10-01 54.4
2008-01-01 55.5
2008-04-01 53.3
2008-07-01 55.5
2008-10-01 54.6
2009-01-01 54.5
2009-04-01 52.8
2009-07-01 56.3
2009-10-01 53.6
2010-01-01 53.8
2010-04-01 52.3
2010-07-01 54.5
2010-10-01 54.3
2011-01-01 54.6
2011-04-01 53.6
2011-07-01 54.9
2011-10-01 56
2012-01-01 53.3
2012-04-01 51.9
2012-07-01 54
2012-10-01 53.7
2013-01-01 53
2013-04-01 52.1
2013-07-01 53.9
2013-10-01 52.5
2014-01-01 52
2014-04-01 50.2
2014-07-01 53.1
2014-10-01 52.8
2015-01-01 51.7
2015-04-01 48.2
2015-07-01 50.3
2015-10-01 51.6
2016-01-01 50.3
2016-04-01 48.9
2016-07-01 51.9
2016-10-01 52.6
2017-01-01 50.9
2017-04-01 49.8
2017-07-01 51.8
2017-10-01 52.6
2018-01-01 51.7
2018-04-01 51.6