Quarter Percent 1998-03-31 5.1 1998-06-30 6.4 1998-09-30 4.5 1998-12-31 7.1 1999-03-31 7.4 1999-06-30 4.4 1999-09-30 2.8 1999-12-31 6.5 2000-03-31 13.6 2000-06-30 17.4 2000-09-30 16.8 2000-12-31 9 2001-03-31 10.8 2001-06-30 14.4 2001-09-30 11.7 2001-12-31 4.6 2002-03-31 0.9 2002-06-30 8.1 2002-09-30 11.1 2002-12-31 14.4 2003-03-31 13.3 2003-06-30 9.9 2003-09-30 4.5 2003-12-31 1.3 2004-03-31 5.6 2004-06-30 7.9 2004-09-30 11.7 2004-12-31 10 2005-03-31 12.1 2005-06-30 21.6 2005-09-30 18.6 2005-12-31 9.1 2006-03-31 10.9 2006-06-30 17.5 2006-09-30 20.9 2006-12-31 15.4 2007-03-31 9.4 2007-06-30 15.2 2007-09-30 21.2 2007-12-31 17.4 2008-03-31 16 2008-06-30 15.3 2008-09-30 8.3 2008-12-31 3.3 2009-03-31 2.6 2009-06-30 -0.7 2009-09-30 -6.6 2009-12-31 -6.2 2010-03-31 -4.7 2010-06-30 -3.7 2010-09-30 -4.5 2010-12-31 -4.1 2011-03-31 -1.7 2011-06-30 -2.3 2011-09-30 -1 2011-12-31 -0.6 2012-03-31 -3.3 2012-06-30 -3.1 2012-09-30 -2.4 2012-12-31 -3.9 2013-03-31 -3.1 2013-06-30 -3.2 2013-09-30 -2.4 2013-12-31 -0.1 2014-03-31 -2.6 2014-06-30 -2.9 2014-09-30 -0.6 2014-12-31 -1.7 2015-03-31 -0.1 2015-06-30 -0.2 2015-09-30 0.4 2015-12-31 2.1 2016-03-31 3.9 2016-06-30 5.9 2016-09-30 4 2016-12-31 1.6 2017-03-31 2.4 2017-06-30 4.6 2017-09-30 3.4 2017-12-31 1.9 2018-03-31 2.2 2018-06-30 3.9 2018-09-30 4 2018-12-31 6.3 2019-03-31 7 2019-06-30 5.9 2019-09-30 5.8 2019-12-31 1.3 2020-03-31 12.9 2020-06-30 21.2 2020-09-30 3.9 2020-12-31 -2.3 2021-03-31 0.9 2021-06-30 1.9 2021-09-30 -2.4 2021-12-31 -3.1 2022-03-31 1.8 2022-06-30 2 2022-09-30 0.5 2022-12-31 1.2 2023-03-31 0.2 2023-06-30 -0.7 2023-09-30 0.7 2023-12-31 1.2