Quarterly Percent
1998-04-01 33.5
1999-04-01 35.4
2000-04-01 36.9
2001-01-01 40.4
2001-04-01 46.2
2001-07-01 48.9
2001-10-01 41.2
2002-01-01 39.2
2002-04-01 44
2002-07-01 47.5
2002-10-01 40.4
2003-01-01 38.3
2003-04-01 43.4
2003-07-01 45.6
2003-10-01 37.7
2004-01-01 35.4
2004-04-01 39.5
2004-07-01 44.3
2004-10-01 37.3
2005-01-01 34.9
2005-04-01 40.2
2005-07-01 43.6
2005-10-01 37.1
2006-01-01 34.6
2006-04-01 40.7
2006-07-01 46.5
2006-10-01 39.3
2007-01-01 38
2007-04-01 42.1
2007-07-01 47.9
2007-10-01 40.6
2008-01-01 39
2008-04-01 43.2
2008-07-01 47.3
2008-10-01 39.1
2009-01-01 36.1
2009-04-01 40.4
2009-07-01 41.3
2009-10-01 35.2
2010-01-01 33.8
2010-04-01 39.7
2010-07-01 44
2010-10-01 37.8
2011-01-01 37
2011-04-01 41.9
2011-07-01 45.8
2011-10-01 38.9
2012-01-01 36.6
2012-04-01 41.3
2012-07-01 44.8
2012-10-01 38
2013-01-01 37
2013-04-01 42.2
2013-07-01 46.7
2013-10-01 40.8
2014-01-01 38.5
2014-04-01 43
2014-07-01 48.6
2014-10-01 40.9
2015-01-01 40.0
2015-04-01 44.0
2015-07-01 49.0
2015-10-01 42.6
2016-01-01 41.2
2016-04-01 46.3
2016-07-01 47.9
2016-10-01 42.4
2017-01-01 41.4
2017-04-01 45.6
2017-07-01 49.2
2017-10-01 43.5
2018-01-01 41.8
2018-04-01 46.0