Quarterly Percent
1998-01-01 12.0
1998-04-01 9.5
1998-07-01 10.4
1998-10-01 10.9
1999-01-01 10.3
1999-04-01 9.2
1999-07-01 8.7
1999-10-01 8.4
2000-01-01 10.1
2000-04-01 8.3
2000-07-01 8.7
2000-10-01 8.4
2001-01-01 9.5
2001-04-01 9.0
2001-07-01 9.0
2001-10-01 10.2
2002-01-01 10.6
2002-04-01 10.5
2002-07-01 12.1
2002-10-01 13.5
2003-01-01 14.2
2003-04-01 13.5
2003-07-01 14.8
2003-10-01 15.8
2004-01-01 15.6
2004-04-01 14.1
2004-07-01 16.1
2004-10-01 16
2005-01-01 16.2
2005-04-01 15.5
2005-07-01 16.7
2005-10-01 16.5
2006-01-01 16
2006-04-01 14.9
2006-07-01 17
2006-10-01 18.2
2007-01-01 18.3
2007-04-01 15.4
2007-07-01 16.1
2007-10-01 17
2008-01-01 16.7
2008-04-01 14.4
2008-07-01 17.2
2008-10-01 18.4
2009-01-01 20.3
2009-04-01 18.9
2009-07-01 19.5
2009-10-01 22.6
2010-01-01 23.2
2010-04-01 20.7
2010-07-01 23.8
2010-10-01 23.3
2011-01-01 28
2011-04-01 27.3
2011-07-01 30.3
2011-10-01 35.3
2012-01-01 36.3
2012-04-01 35.7
2012-07-01 39.2
2012-10-01 40.5
2013-01-01 42.5
2013-04-01 37.4
2013-07-01 36.4
2013-10-01 36.1
2014-01-01 37.5
2014-04-01 35.6
2014-07-01 32.2
2014-10-01 34
2015-01-01 34.4
2015-04-01 29.8
2015-07-01 30.8
2015-10-01 32.8
2016-01-01 31.0
2016-04-01 26.9
2016-07-01 26.1
2016-10-01 27.7
2017-01-01 25.1
2017-04-01 22.7
2017-07-01 24.2
2017-10-01 23.5
2018-01-01 21.9
2018-04-01 19.4