Quarterly Percent
1998-04-01 27.9
1998-10-01 26.8
1999-04-01 26.5
1999-10-01 26.8
2000-04-01 25.8
2000-10-01 27.9
2001-04-01 30.0
2001-10-01 31.2
2002-01-01 32.3
2002-04-01 36.7
2002-07-01 36.3
2002-10-01 37.4
2003-01-01 36.0
2003-04-01 36.6
2003-07-01 42.2
2003-10-01 38.0
2004-01-01 41.7
2004-04-01 40.2
2004-07-01 40.7
2004-10-01 42.2
2005-01-01 41.9
2005-04-01 43.2
2005-07-01 46.6
2005-10-01 46.5
2006-01-01 48.2
2006-04-01 48.6
2006-07-01 50.8
2006-10-01 49.1
2007-01-01 53.4
2007-04-01 53.7
2007-07-01 53.5
2007-10-01 53.1
2008-01-01 55.3
2008-04-01 57.4
2008-07-01 56.1
2008-10-01 56.4
2009-01-01 57.8
2009-04-01 56.4
2009-07-01 48.7
2009-10-01 49.3
2010-01-01 49.6
2010-04-01 50.3
2010-07-01 47.0
2010-10-01 46.8
2011-01-01 47.3
2011-04-01 50.3
2011-07-01 49.4
2011-10-01 51.7
2012-01-01 50.6
2012-04-01 52.2
2012-07-01 54.2
2012-10-01 52.8
2013-01-01 54.4
2013-04-01 55.0
2013-07-01 55.2
2013-10-01 53.6
2014-01-01 57.8
2014-04-01 56.7
2014-07-01 55.3
2014-10-01 55.8
2015-01-01 57.2
2015-04-01 59.2
2015-07-01 60.1
2015-10-01 59.0
2016-01-01 59.0
2016-04-01 63.6
2016-07-01 60.6
2016-10-01 62.4
2017-01-01 60.6
2017-04-01 62.4
2017-07-01 62.4
2017-10-01 63.2
2018-01-01 62.3
2018-04-01 64.2