Quarterly Percent
1998-04-01 32.1
1999-01-01 33.7
1999-04-01 35.1
1999-07-01 33.2
1999-10-01 33.1
2000-01-01 36.6
2000-04-01 35.1
2000-07-01 37.6
2000-10-01 36.3
2001-01-01 34.3
2001-04-01 35.1
2001-07-01 35.5
2001-10-01 35.6
2002-01-01 36.1
2002-04-01 35.1
2002-07-01 37
2002-10-01 35.7
2003-01-01 34.2
2003-04-01 38.7
2003-07-01 38.4
2003-10-01 40
2004-01-01 38.3
2004-04-01 39.3
2004-07-01 39.9
2004-10-01 38.7
2005-01-01 40.8
2005-04-01 41.3
2005-07-01 43.8
2005-10-01 41
2006-01-01 40.6
2006-04-01 38.3
2006-07-01 40.6
2006-10-01 44.1
2007-01-01 44.6
2007-04-01 41
2007-07-01 42.8
2007-10-01 43
2008-01-01 42.9
2008-04-01 41.3
2008-07-01 43.3
2008-10-01 44
2009-01-01 42.2
2009-04-01 41.7
2009-07-01 43.5
2009-10-01 44.2
2010-01-01 44.2
2010-04-01 46.1
2010-07-01 45.1
2010-10-01 46.9
2011-01-01 43.9
2011-04-01 47
2011-07-01 45.9
2011-10-01 47.1
2012-01-01 45.8
2012-04-01 46.6
2012-07-01 46.1
2012-10-01 45.5
2013-01-01 46.5
2013-04-01 48.9
2013-07-01 48.1
2013-10-01 47.4
2014-01-01 47.2
2014-04-01 50
2014-07-01 47.1
2014-10-01 49.5
2015-01-01 47.9
2015-04-01 48.1
2015-07-01 50.4
2015-10-01 49.0
2016-01-01 49.0
2016-04-01 51.8
2016-07-01 51.3
2016-10-01 50.9
2017-01-01 52.7
2017-04-01 53.0
2017-07-01 53.1
2017-10-01 56.5
2018-01-01 55.9
2018-04-01 54.8