Quarterly Percent
1998-01-01 47.7
1998-04-01 49.2
1998-07-01 49.5
1998-10-01 48.4
1999-01-01 49.7
1999-04-01 49.5
1999-07-01 49.0
1999-10-01 47
2000-01-01 48
2000-04-01 50.4
2000-07-01 47.9
2000-10-01 47.7
2001-01-01 48.2
2001-04-01 48.5
2001-07-01 46.4
2001-10-01 47.1
2002-01-01 47.3
2002-04-01 47.6
2002-07-01 46.3
2002-10-01 47.2
2003-01-01 49.6
2003-04-01 51.7
2003-07-01 50.9
2003-10-01 52
2004-01-01 52.8
2004-04-01 52.9
2004-07-01 51.8
2004-10-01 53.3
2005-01-01 54.1
2005-04-01 53.7
2005-07-01 53.8
2005-10-01 54.3
2006-01-01 54.6
2006-04-01 54.1
2006-07-01 54.2
2006-10-01 55
2007-01-01 55
2007-04-01 56.3
2007-07-01 54.4
2007-10-01 55.6
2008-01-01 55.3
2008-04-01 56.3
2008-07-01 57
2008-10-01 57
2009-01-01 59
2009-04-01 59.9
2009-07-01 60.2
2009-10-01 60.5
2010-01-01 61.5
2010-04-01 62.5
2010-07-01 61.9
2010-10-01 62.2
2011-01-01 60.1
2011-04-01 61.3
2011-07-01 57.8
2011-10-01 59.2
2012-01-01 61.1
2012-04-01 61.5
2012-07-01 58.5
2012-10-01 62
2013-01-01 63.5
2013-04-01 64.8
2013-07-01 62
2013-10-01 64.8
2014-01-01 65.2
2014-04-01 66.7
2014-07-01 63.1
2014-10-01 66
2015-01-01 66.5
2015-04-01 67.5
2015-07-01 64.8
2015-10-01 64.3
2016-01-01 66.1
2016-04-01 65.7
2016-07-01 63.9
2016-10-01 64.2
2017-01-01 64.8
2017-04-01 65.8
2017-07-01 63.5
2017-10-01 63.7
2018-01-01 64.3
2018-04-01 65.1