Quarterly Percent
1999-01-01 34.4
1999-04-01 35.7
1999-07-01 37.9
1999-10-01 36.9
2000-01-01 36.3
2000-04-01 37.5
2000-07-01 40
2000-10-01 39
2001-01-01 38.7
2001-04-01 39.6
2001-07-01 42
2001-10-01 40.5
2002-01-01 39.6
2002-04-01 40.4
2002-07-01 41.2
2002-10-01 39.1
2003-01-01 38.8
2003-04-01 39.9
2003-07-01 41.9
2003-10-01 40.2
2004-01-01 40
2004-04-01 40.1
2004-07-01 42.6
2004-10-01 41.1
2005-01-01 42.1
2005-04-01 43
2005-07-01 46.5
2005-10-01 43.5
2006-01-01 42.3
2006-04-01 43.7
2006-07-01 47
2006-10-01 44.4
2007-01-01 43.9
2007-04-01 44.5
2007-07-01 46.1
2007-10-01 42.4
2008-01-01 40.9
2008-04-01 39.8
2008-07-01 41.3
2008-10-01 35.3
2009-01-01 31.2
2009-04-01 29.2
2009-07-01 30
2009-10-01 27.1
2010-01-01 25.4
2010-04-01 26
2010-07-01 26.9
2010-10-01 24
2011-01-01 22.2
2011-04-01 22.1
2011-07-01 23.7
2011-10-01 20.3
2012-01-01 18.3
2012-04-01 18.5
2012-07-01 20.1
2012-10-01 17.2
2013-01-01 16.2
2013-04-01 17.3
2013-07-01 18.9
2013-10-01 17
2014-01-01 16.4
2014-04-01 17.2
2014-07-01 18.6
2014-10-01 17.5
2015-01-01 16.9
2015-04-01 17.9
2015-07-01 20.3
2015-10-01 19.2
2016-01-01 18.6
2016-04-01 19.1
2016-07-01 20.8
2016-10-01 19.3
2017-01-01 19.3
2017-04-01 20.5
2017-07-01 23.8
2017-10-01 21.2
2018-01-01 20.8
2018-04-01 22.8
2018-07-01 24.7