Quarterly Percent
1999-01-01 45.7
2000-01-01 41.1
2000-04-01 41.1
2000-07-01 40.6
2000-10-01 38.8
2001-01-01 38.3
2001-04-01 40.8
2001-07-01 40.2
2001-10-01 38.9
2002-01-01 38.4
2002-04-01 39.7
2002-07-01 38.9
2002-10-01 38
2003-01-01 38.3
2003-04-01 39.5
2003-07-01 40.5
2003-10-01 40.4
2004-01-01 38.3
2004-04-01 38.9
2004-07-01 39.2
2004-10-01 39.8
2005-01-01 39
2005-04-01 39.9
2005-07-01 42.4
2005-10-01 42.1
2006-01-01 40.6
2006-04-01 41.4
2006-07-01 43.8
2006-10-01 44.2
2007-01-01 43.3
2007-04-01 44.7
2007-07-01 45.1
2007-10-01 45.9
2008-01-01 46.1
2008-04-01 46.7
2008-07-01 46.9
2008-10-01 47.3
2009-01-01 46.8
2009-04-01 46.7
2009-07-01 48.8
2009-10-01 47.6
2010-01-01 48
2010-04-01 48
2010-07-01 49.5
2010-10-01 50.1
2011-01-01 50.4
2011-04-01 51.4
2011-07-01 52.4
2011-10-01 52.2
2012-01-01 51.9
2012-04-01 53.9
2012-07-01 54.2
2012-10-01 54.1
2013-01-01 54.7
2013-04-01 55.7
2013-07-01 56.5
2013-10-01 56.8
2014-01-01 55.8
2014-04-01 56.5
2014-07-01 58
2014-10-01 58.5
2015-01-01 56.9
2015-04-01 55.9
2015-07-01 58.3
2015-10-01 59.1
2016-01-01 58.2
2016-04-01 57.4
2016-07-01 58.6
2016-10-01 60.4
2017-01-01 59.9
2017-04-01 60.1
2017-07-01 61.4
2017-10-01 61.8
2018-01-01 60.2
2018-04-01 61.4