Quarterly Percent
1999-01-01 48.5
1999-04-01 48.8
1999-07-01 49.3
1999-10-01 49.5
2000-01-01 49.3
2000-04-01 49.4
2000-07-01 49.9
2000-10-01 50.3
2001-01-01 49.8
2001-04-01 49.6
2001-07-01 50
2001-10-01 49.7
2002-01-01 49.6
2002-04-01 49.8
2002-07-01 49.9
2002-10-01 50.1
2003-01-01 50.2
2003-04-01 50.9
2003-07-01 51.2
2003-10-01 51.3
2004-01-01 50.7
2004-04-01 50.5
2004-07-01 50.6
2004-10-01 51
2005-01-01 50.6
2005-04-01 50.9
2005-07-01 51.2
2005-10-01 51.2
2006-01-01 51
2006-04-01 51
2006-07-01 51.1
2006-10-01 51.1
2007-01-01 50.6
2007-04-01 50.7
2007-07-01 50.8
2007-10-01 50.6
2008-01-01 49.8
2008-04-01 50
2008-07-01 50.7
2008-10-01 50.8
2009-01-01 49.4
2009-04-01 49.6
2009-07-01 49.6
2009-10-01 49.8
2010-01-01 49.8
2010-04-01 50.2
2010-07-01 50.6
2010-10-01 50.3
2011-01-01 49.7
2011-04-01 50.3
2011-07-01 50.6
2011-10-01 50.8
2012-01-01 50.5
2012-04-01 51.8
2012-07-01 52.8
2012-10-01 52.3
2013-01-01 51.6
2013-04-01 52.3
2013-07-01 52.9
2013-10-01 53.6
2014-01-01 54.9
2014-04-01 55.5
2014-07-01 56.4
2014-10-01 56.8
2015-01-01 56.7
2015-04-01 57.6
2015-07-01 58.4
2015-10-01 58.4
2016-01-01 58.8
2016-04-01 60.1
2016-07-01 60.8
2016-10-01 61.2
2017-01-01 60.6
2017-04-01 61.1
2017-07-01 61.7
2017-10-01 61.7
2018-01-01 61.6
2018-04-01 62.5