Quarterly Percent
2000-04-01 39.7
2001-04-01 40.1
2002-04-01 40.8
2003-04-01 42.7
2004-04-01 43.5
2005-01-01 44.6
2005-04-01 45.2
2005-07-01 45.4
2005-10-01 45.7
2006-01-01 45.6
2006-04-01 46.2
2006-07-01 46.8
2006-10-01 46.7
2007-01-01 46.3
2007-04-01 47.2
2007-07-01 47.3
2007-10-01 47.3
2008-01-01 47.1
2008-04-01 48.0
2008-07-01 48.1
2008-10-01 48.3
2009-01-01 48.4
2009-04-01 49.2
2009-07-01 48.9
2009-10-01 49.1
2010-01-01 49.2
2010-04-01 49.5
2010-07-01 49.8
2010-10-01 49.8
2011-01-01 50.1
2011-04-01 50.6
2011-07-01 50.7
2011-10-01 51.1
2012-01-01 51.4
2012-04-01 52.5
2012-07-01 52.9
2012-10-01 53.2
2013-01-01 53.3
2013-04-01 54.1
2013-07-01 54.7
2013-10-01 55.1
2014-01-01 55.1
2014-04-01 55.7
2014-07-01 56.1
2014-10-01 56.6
2015-01-01 56.4
2015-04-01 57.1
2015-07-01 57.6
2015-10-01 57.9
2016-01-01 58.3
2016-04-01 59.1
2016-07-01 59.3
2016-10-01 59.6
2017-01-01 59.7
2017-04-01 60.6
2017-07-01 60.8
2017-10-01 61.2
2018-01-01 61.3
2018-04-01 61.8