Quarterly Percent
1999-04-01 35.4
2000-04-01 37.9
2001-04-01 35.3
2002-04-01 37.6
2003-01-01 39.7
2003-04-01 39.7
2003-07-01 39.7
2003-10-01 39.7
2004-01-01 38.3
2004-04-01 38.3
2004-07-01 38.3
2004-10-01 38.3
2005-01-01 38.3
2005-04-01 38.3
2005-07-01 38.3
2005-10-01 38.3
2006-01-01 38.7
2006-04-01 38.7
2006-07-01 38.7
2006-10-01 38.7
2007-01-01 32
2007-04-01 39.5
2007-07-01 38.1
2007-10-01 32.5
2008-01-01 31.1
2008-04-01 44.2
2008-07-01 42.8
2008-10-01 36.5
2009-01-01 48.1
2009-04-01 51.4
2009-07-01 44.8
2009-10-01 41.9
2010-01-01 46.8
2010-04-01 50.2
2010-07-01 46.6
2010-10-01 47
2011-01-01 46
2011-04-01 43.4
2011-07-01 50.7
2011-10-01 47.7
2012-01-01 48.9
2012-04-01 44.9
2012-07-01 47.1
2012-10-01 48.8
2013-01-01 51.7
2013-04-01 49.7
2013-07-01 45.7
2013-10-01 45.9
2014-01-01 44.2
2014-04-01 52.9
2014-07-01 50.8
2014-10-01 51.3
2015-01-01 47.1
2015-04-01 46.3
2015-07-01 37.8
2015-10-01 40.9
2016-01-01 46.3
2016-04-01 48.8
2016-07-01 44.6
2016-10-01 45.8
2017-01-01 48.6
2017-04-01 46.0
2017-07-01 43.9
2017-10-01 43.1
2018-01-01 43.6
2018-04-01 43.9