Quarterly Percent
1999-04-01 46.8
1999-07-01 58.4
1999-10-01 49.3
2000-01-01 47.3
2000-04-01 46.7
2000-07-01 57.5
2000-10-01 48.8
2001-01-01 46.8
2001-04-01 44.8
2001-07-01 55.9
2001-10-01 47.6
2002-01-01 46.7
2002-04-01 44.6
2002-07-01 54.2
2002-10-01 47.1
2003-01-01 45.6
2003-04-01 45.5
2003-07-01 54.6
2003-10-01 48.1
2004-01-01 46.6
2004-04-01 44.7
2004-07-01 54.2
2004-10-01 49.8
2005-01-01 47.3
2005-04-01 47.6
2005-07-01 55.2
2005-10-01 49.4
2006-01-01 47.6
2006-04-01 48.2
2006-07-01 56.6
2006-10-01 49.9
2007-01-01 61.1
2007-04-01 64.4
2007-07-01 68.3
2007-10-01 62.9
2008-01-01 60.4
2008-04-01 62.7
2008-07-01 65.9
2008-10-01 58.4
2009-01-01 56.9
2009-04-01 59.4
2009-07-01 58.8
2009-10-01 54.4
2010-01-01 48.9
2010-04-01 52.5
2010-07-01 53.5
2010-10-01 52.0
2011-01-01 48.3
2011-04-01 50.3
2011-07-01 50.0
2011-10-01 47.9
2012-01-01 46.8
2012-04-01 50.0
2012-07-01 51.1
2012-10-01 46.7
2013-01-01 45.0
2013-04-01 50.1
2013-07-01 51.5
2013-10-01 45.9
2014-01-01 42.8
2014-04-01 45.0
2014-07-01 50.1
2014-10-01 45.4
2015-01-01 41.9
2015-04-01 44.0
2015-07-01 48.2
2015-10-01 44.2
2016-01-01 41.9
2016-04-01 51.0
2016-07-01 52.2
2016-10-01 48.5
2017-01-01 45.2
2017-04-01 48.1
2017-07-01 45.2
2017-10-01 43.5
2018-01-01 40.7
2018-04-01 45.8