Month Percent 1998-09-30 10.3 1998-10-31 10.8 1998-11-30 11.6 1998-12-31 14.4 1999-01-31 14.2 1999-02-28 2.4 1999-03-31 9.4 1999-04-30 10.1 1999-05-31 7.7 1999-06-30 6.9 1999-07-31 4.7 1999-08-31 3.1 1999-09-30 3.4 1999-10-31 8.3 1999-11-30 8.1 1999-12-31 7.5 2000-01-31 6.2 2000-02-29 10.7 2000-03-31 6.7 2000-04-30 6.8 2000-05-31 5.3 2000-06-30 4.5 2000-07-31 3.1 2000-08-31 3.4 2000-09-30 4 2000-10-31 0.6 2000-11-30 1.1 2000-12-31 0.3 2001-01-31 0.7 2001-02-28 1.3 2001-03-31 -0.4 2001-04-30 0.7 2001-05-31 -1.2 2001-06-30 3.9 2001-07-31 6.3 2001-08-31 6.6 2001-09-30 7.2 2001-10-31 3.7 2001-11-30 3.5 2001-12-31 2.1 2002-01-31 1.7 2002-02-28 1.3 2002-03-31 4.2 2002-04-30 2.4 2002-05-31 4.3 2002-06-30 2.2 2002-07-31 0.2 2002-08-31 0.6 2002-09-30 1.2 2002-10-31 4.6 2002-11-30 3.7 2002-12-31 4.3 2003-01-31 5.3 2003-02-28 5.6 2003-03-31 2.6 2003-04-30 1.1 2003-05-31 1.4 2003-06-30 1.2 2003-07-31 1.5 2003-08-31 0.6 2003-09-30 -1.1 2003-10-31 -2.1 2003-11-30 -1.7 2003-12-31 0.7 2004-01-31 -0.6 2004-02-29 -1.3 2004-03-31 1.8 2004-04-30 4 2004-05-31 4 2004-06-30 3.6 2004-07-31 4 2004-08-31 5.1 2004-09-30 6.3 2004-10-31 7.6 2004-11-30 9.4 2004-12-31 5.3 2005-01-31 6.7 2005-02-28 5.5 2005-03-31 1.9 2005-04-30 1.5 2005-05-31 2.3 2005-06-30 0.5 2005-07-31 -1.1 2005-08-31 -1.3 2005-09-30 -4.6 2005-10-31 -6 2005-11-30 -8.3 2005-12-31 -6.6 2006-01-31 -5.9 2006-02-28 -6.8 2006-03-31 -4.7 2006-04-30 -3.7 2006-05-31 -4.4 2006-06-30 -2.4 2006-07-31 -0.5 2006-08-31 -2.2 2006-09-30 1.6 2006-10-31 2.4 2006-11-30 4.4 2006-12-31 1.5 2007-01-31 3.3 2007-02-28 6.8 2007-03-31 9.8 2007-04-30 9 2007-05-31 11.2 2007-06-30 12.3 2007-07-31 9.9 2007-08-31 13.2 2007-09-30 15.7 2007-10-31 17.3 2007-11-30 12.3 2007-12-31 16.4 2008-01-31 13.3 2008-02-29 11.4 2008-03-31 7.9 2008-04-30 8.4 2008-05-31 6.7 2008-06-30 7.2 2008-07-31 5.7 2008-08-31 4.7 2008-09-30 -3.5 2008-10-31 -12.1 2008-11-30 -11 2008-12-31 -9.7 2009-01-31 -12 2009-02-28 -13.9 2009-03-31 -11.4 2009-04-30 -13 2009-05-31 -12.8 2009-06-30 -13.9 2009-07-31 -11.3 2009-08-31 -15.8 2009-09-30 -8.9 2009-10-31 -1.4 2009-11-30 -2.2 2009-12-31 -6.9 2010-01-31 -5.1 2010-02-28 -2.4 2010-03-31 -3 2010-04-30 -9.7 2010-05-31 -10.5 2010-06-30 -13.9 2010-07-31 -14.3 2010-08-31 -10.1 2010-09-30 -14.5 2010-10-31 -13.7 2010-11-30 -12.2 2010-12-31 -10.3 2011-01-31 -11.2 2011-02-28 -13.4 2011-03-31 -15.3 2011-04-30 -9.4 2011-05-31 -7.3 2011-06-30 -1.5 2011-07-31 -4.1 2011-08-31 -4.2 2011-09-30 1 2011-10-31 -1.7 2011-11-30 -6.5 2011-12-31 -7.2 2012-01-31 -9.2 2012-02-29 -8.1 2012-03-31 -6.2 2012-04-30 -4.6 2012-05-31 -3.2 2012-06-30 -4.4 2012-07-31 -2.3 2012-08-31 -1.5 2012-09-30 -5.5 2012-10-31 -6.2 2012-11-30 -0.4 2012-12-31 -0.1 2013-01-31 3.8 2013-02-28 1.8 2013-03-31 4 2013-04-30 2.8 2013-05-31 -3.3 2013-06-30 -6.2 2013-07-31 -4.9 2013-08-31 -9.1 2013-09-30 -8.9 2013-10-31 -5.4 2013-11-30 -6 2013-12-31 -5.3 2014-01-31 -6.5 2014-02-28 -4 2014-03-31 -8.3 2014-04-30 -7.8 2014-05-31 -1.6 2014-06-30 1.1 2014-07-31 0.6 2014-08-31 5.8 2014-09-30 4.5 2014-10-31 0.2 2014-11-30 -0.5 2014-12-31 -2.9 2015-01-31 -2 2015-02-28 -2.5 2015-03-31 -0.1 2015-04-30 2.6 2015-05-31 -3.3 2015-06-30 -5.9 2015-07-31 -7.6 2015-08-31 -9.8 2015-09-30 -6.9 2015-10-31 -4.8 2015-11-30 -3.8 2015-12-31 -1.1 2016-01-31 -1.6 2016-02-29 0.2 2016-03-31 -1.9 2016-04-30 -5.9 2016-05-31 -3.8 2016-06-30 1.3 2016-07-31 2 2016-08-31 2.1 2016-09-30 0.7 2016-10-31 2.5 2016-11-30 2.8 2016-12-31 6 2017-01-31 5.2 2017-02-28 3.7 2017-03-31 4.2 2017-04-30 11 2017-05-31 6.3 2017-06-30 1.2 2017-07-31 -0.9 2017-08-31 0.1 2017-09-30 -0.1 2017-10-31 -1.8 2017-11-30 -2.5 2017-12-31 -9.4 2018-01-31 -6.1 2018-02-28 -7.8 2018-03-31 -8.5 2018-04-30 -12 2018-05-31 -7.7 2018-06-30 -6.1 2018-07-31 -2.6 2018-08-31 -2.8 2018-09-30 -0.6 2018-10-31 -6 2018-11-30 -9.1 2018-12-31 -11.1 2019-01-31 -9.8 2019-02-28 -5.9 2019-03-31 -6.8 2019-04-30 -6.8 2019-05-31 -7.3 2019-06-30 -8.2 2019-07-31 -8.4 2019-08-31 -9.3 2019-09-30 -12.5 2019-10-31 -6.7 2019-11-30 -3.2 2019-12-31 2.8 2020-01-31 -2.9 2020-02-29 -5.2 2020-03-31 -0.9 2020-04-30 -5.7 2020-05-31 -5.5 2020-06-30 -5.3 2020-07-31 -6.1 2020-08-31 -6 2020-09-30 -4.7 2020-10-31 -4.1 2020-11-30 -4.3 2020-12-31 -0.5