Quarterly Percent
1999-01-01 30.1
1999-04-01 31.2
1999-07-01 34.9
1999-10-01 32.7
2000-01-01 27.3
2000-04-01 27.4
2000-07-01 34.7
2000-10-01 29.4
2001-01-01 27.6
2001-04-01 26.4
2001-07-01 28.7
2001-10-01 24.4
2002-01-01 25.8
2002-04-01 27.2
2002-07-01 27.6
2002-10-01 25.4
2003-01-01 23.4
2003-04-01 23.6
2003-07-01 24.6
2003-10-01 25.6
2004-01-01 26
2004-04-01 29.1
2004-07-01 31.6
2004-10-01 27.6
2005-01-01 27.6
2005-04-01 26.8
2005-07-01 33.9
2005-10-01 31
2006-01-01 27.5
2006-04-01 31.8
2006-07-01 32.4
2006-10-01 29.5
2007-01-01 28.2
2007-04-01 31.1
2007-07-01 36.9
2007-10-01 29.8
2008-01-01 29.8
2008-04-01 31.4
2008-07-01 39.6
2008-10-01 32
2009-01-01 27
2009-04-01 30.3
2009-07-01 37.9
2009-10-01 28.7
2010-01-01 29.9
2010-04-01 30.3
2010-07-01 31.5
2010-10-01 28.3
2011-01-01 23.5
2011-04-01 26.2
2011-07-01 28.6
2011-10-01 29.2
2012-01-01 25.9
2012-04-01 20.2
2012-07-01 25.7
2012-10-01 23.1
2013-01-01 21.7
2013-04-01 21.2
2013-07-01 28.5
2013-10-01 20.8
2014-01-01 20.1
2014-04-01 24.1
2014-07-01 27.1
2014-10-01 24.6
2015-01-01 22.1
2015-04-01 29.5
2015-07-01 30.7
2015-10-01 26.0
2016-01-01 22.9
2016-04-01 26.2
2016-07-01 29.3
2016-10-01 25.8
2017-01-01 28.4
2017-04-01 29.7
2017-07-01 33.3
2017-10-01 30.2
2018-01-01 30.6
2018-04-01 31.9