Quarterly Percent
1998-04-01 36.5
1998-10-01 36.1
1999-04-01 36.6
1999-10-01 36.9
2000-04-01 35.4
2000-10-01 36.5
2001-04-01 35.9
2001-10-01 37.8
2002-01-01 38.7
2002-04-01 42.9
2002-07-01 42.5
2002-10-01 42.9
2003-01-01 42.2
2003-04-01 40.8
2003-07-01 48.2
2003-10-01 41.9
2004-01-01 48.0
2004-04-01 44.7
2004-07-01 47.5
2004-10-01 46.1
2005-01-01 47.1
2005-04-01 46.9
2005-07-01 50.6
2005-10-01 48.8
2006-01-01 51.9
2006-04-01 53.5
2006-07-01 54.2
2006-10-01 54.2
2007-01-01 57.6
2007-04-01 57.1
2007-07-01 58.2
2007-10-01 59.1
2008-01-01 59.7
2008-04-01 59.4
2008-07-01 59.4
2008-10-01 57.7
2009-01-01 57.9
2009-04-01 56.7
2009-07-01 47.8
2009-10-01 47.6
2010-01-01 47.2
2010-04-01 49.5
2010-07-01 47.0
2010-10-01 47.5
2011-01-01 48.6
2011-04-01 50.4
2011-07-01 50.7
2011-10-01 52.5
2012-01-01 50.9
2012-04-01 52.3
2012-07-01 54.7
2012-10-01 53.2
2013-01-01 53.2
2013-04-01 55.2
2013-07-01 56.6
2013-10-01 54.2
2014-01-01 56.0
2014-04-01 57.3
2014-07-01 55.8
2014-10-01 56.5
2015-01-01 58.7
2015-04-01 59.0
2015-07-01 59.6
2015-10-01 60.3
2016-01-01 60.2
2016-04-01 62.1
2016-07-01 60.7
2016-10-01 62.4
2017-01-01 60.1
2017-04-01 62.1
2017-07-01 62.9
2017-10-01 63.9
2018-01-01 63.0
2018-04-01 65.3