Quarterly Percent
1999-01-01 27.9
2000-01-01 36.4
2000-04-01 34.3
2000-07-01 31.2
2000-10-01 32
2001-01-01 37.2
2001-04-01 38
2001-07-01 37.8
2001-10-01 40.1
2002-01-01 42.6
2002-04-01 41
2002-07-01 40.2
2002-10-01 43.8
2003-01-01 44.4
2003-04-01 40.3
2003-07-01 39.9
2003-10-01 39
2004-01-01 41.4
2004-04-01 38.9
2004-07-01 36.1
2004-10-01 34.1
2005-01-01 37.2
2005-04-01 37.9
2005-07-01 34.6
2005-10-01 33.2
2006-01-01 33.8
2006-04-01 29.7
2006-07-01 26
2006-10-01 23.9
2007-01-01 24.1
2007-04-01 20.7
2007-07-01 18.1
2007-10-01 16.9
2008-01-01 17.2
2008-04-01 15.1
2008-07-01 13.8
2008-10-01 14.9
2009-01-01 18.7
2009-04-01 18.6
2009-07-01 20.9
2009-10-01 22.5
2010-01-01 24.4
2010-04-01 21.7
2010-07-01 21.8
2010-10-01 21.8
2011-01-01 25.7
2011-04-01 23.3
2011-07-01 21.9
2011-10-01 23.7
2012-01-01 25.6
2012-04-01 23
2012-07-01 23.1
2012-10-01 24.6
2013-01-01 26.9
2013-04-01 24.3
2013-07-01 24.6
2013-10-01 25.8
2014-01-01 26.3
2014-04-01 22.3
2014-07-01 21.3
2014-10-01 20.8
2015-01-01 23.3
2015-04-01 20.4
2015-07-01 19.0
2015-10-01 20.0
2016-01-01 19.0
2016-04-01 17.2
2016-07-01 17.8
2016-10-01 15.8
2017-01-01 14.6
2017-04-01 15.4
2017-07-01 14.1
2017-10-01 14.3
2018-01-01 11.3
2018-04-01 11.0