Quarterly Percent
1998-04-01 59.4
1999-04-01 57.7
2000-04-01 59.3
2001-01-01 53.5
2001-04-01 47.6
2001-07-01 45.5
2001-10-01 53.2
2002-01-01 54
2002-04-01 49.5
2002-07-01 46.5
2002-10-01 53.7
2003-01-01 55.3
2003-04-01 49.4
2003-07-01 48.4
2003-10-01 56
2004-01-01 56.6
2004-04-01 51.5
2004-07-01 48
2004-10-01 55.3
2005-01-01 56.7
2005-04-01 44.2
2005-07-01 46.2
2005-10-01 53.4
2006-01-01 54.2
2006-04-01 44.3
2006-07-01 44.1
2006-10-01 52.1
2007-01-01 51.7
2007-04-01 44.9
2007-07-01 43.6
2007-10-01 50.9
2008-01-01 50.9
2008-04-01 42.3
2008-07-01 43.5
2008-10-01 51.9
2009-01-01 52.3
2009-04-01 43.1
2009-07-01 46.9
2009-10-01 53.6
2010-01-01 52.9
2010-04-01 43.8
2010-07-01 44.8
2010-10-01 52.1
2011-01-01 50.8
2011-04-01 42.5
2011-07-01 43.8
2011-10-01 51
2012-01-01 51.4
2012-04-01 43.2
2012-07-01 44
2012-10-01 51.1
2013-01-01 49.6
2013-04-01 41.5
2013-07-01 42.2
2013-10-01 48.7
2014-01-01 48.2
2014-04-01 40.6
2014-07-01 40.6
2014-10-01 48.7
2015-01-01 47.6
2015-04-01 41.1
2015-07-01 41.7
2015-10-01 49.0
2016-01-01 47.3
2016-04-01 40.0
2016-07-01 43.8
2016-10-01 49.6
2017-01-01 48.1
2017-04-01 41.6
2017-07-01 42.3
2017-10-01 49.1
2018-01-01 49.0
2018-04-01 42.1