Month Percent 1996-01-31 6.27 1996-02-29 6.42 1996-03-31 5.85 1996-04-30 6.16 1996-05-31 5.93 1996-06-30 5.45 1996-07-31 5.8 1996-08-31 6 1996-09-30 5.8 1996-10-31 6.35 1996-11-30 5.95 1996-12-31 5.78 1997-01-31 6.22 1997-02-28 5.72 1997-03-31 6 1997-04-30 5.9 1997-05-31 6.15 1997-06-30 6.375 1997-07-31 6.875 1997-08-31 6.975 1997-09-30 7.015 1997-10-31 6.955 1997-11-30 7.3 1997-12-31 7.3 1998-01-31 7.25 1998-02-28 7.2 1998-03-31 7.225 1998-04-30 7.35 1998-05-31 7.075 1998-06-30 7.45 1998-07-31 7.425 1998-08-31 7 1998-09-30 7.425 1998-10-31 6.875 1998-11-30 6.625 1998-12-31 5.45 1999-01-31 6.025 1999-02-28 5.65 1999-03-31 5.95 1999-04-30 5.1 1999-05-31 5.2 1999-06-30 4.95 1999-07-31 5.1 1999-08-31 4.775 1999-09-30 5.325 1999-10-31 5.05 1999-11-30 5.55 1999-12-31 3.3 2000-01-31 6.05 2000-02-29 5.975 2000-03-31 5.7 2000-04-30 5.75 2000-05-31 6.05 2000-06-30 5.225 2000-07-31 5.7 2000-08-31 5.7 2000-09-30 5.95 2000-10-31 5.85 2000-11-30 5.9 2000-12-31 4.75 2001-01-31 5.95 2001-02-28 5.685 2001-03-31 6.225 2001-04-30 5.125 2001-05-31 5.7 2001-06-30 4.85 2001-07-31 5.55 2001-08-31 4.3 2001-09-30 5.05 2001-10-31 3.9 2001-11-30 4.25 2001-12-31 4.75 2002-01-31 3.65 2002-02-28 3.8 2002-03-31 3.3 2002-04-30 4.75 2002-05-31 4.05 2002-06-30 3.275 2002-07-31 4.45 2002-08-31 4 2002-09-30 3.4 2002-10-31 3.375 2002-11-30 3.95 2002-12-31 4.575 2003-01-31 3.65 2003-02-28 3.525 2003-03-31 4.1 2003-04-30 3.65 2003-05-31 3.9 2003-06-30 3.25 2003-07-31 3.5 2003-08-31 3.3 2003-09-30 3.5 2003-10-31 3.05 2003-11-30 3.625 2003-12-31 3.35 2004-01-31 3.4 2004-02-29 3.575 2004-03-31 3.65 2004-04-30 3.95 2004-05-31 4.325 2004-06-30 4.65 2004-07-31 4.2 2004-08-31 4.725 2004-09-30 4.8 2004-10-31 4.67 2004-11-30 4.905 2004-12-31 4.775 2005-01-31 4.695 2005-02-28 4.9 2005-03-31 4.75 2005-04-30 4.805 2005-05-31 4.745 2005-06-30 4.885 2005-07-31 4.655 2005-08-31 4.675 2005-09-30 4.375 2005-10-31 4.355 2005-11-30 4.585 2005-12-31 4.69 2006-01-31 4.625 2006-02-28 4.49 2006-03-31 4.63 2006-04-30 4.395 2006-05-31 4.595 2006-06-30 4.475 2006-07-31 4.475 2006-08-31 4.675 2006-09-30 4.815 2006-10-31 4.84 2006-11-30 5.055 2006-12-31 4.9 2007-01-31 5.27 2007-02-28 5.225 2007-03-31 5.225 2007-04-30 5.245 2007-05-31 5.52 2007-06-30 5.875 2007-07-31 5.695 2007-08-31 6.1 2007-09-30 5.875 2007-10-31 5.785 2007-11-30 5.815 2007-12-31 5.975 2008-01-31 5.425 2008-02-29 5.265 2008-03-31 5.175 2008-04-30 5.065 2008-05-31 5.07 2008-06-30 5.34 2008-07-31 5.04 2008-08-31 5.025 2008-09-30 4.75 2008-10-31 4.05 2008-11-30 2.4 2008-12-31 1.75 2009-01-31 1.475 2009-02-28 0.775 2009-03-31 0.675 2009-04-30 0.455 2009-05-31 0.49 2009-06-30 0.5 2009-07-31 0.36 2009-08-31 0.445 2009-09-30 0.475 2009-10-31 0.445 2009-11-30 0.46 2009-12-31 0.455 2010-01-31 0.455 2010-02-28 0.485 2010-03-31 0.455 2010-04-30 0.465 2010-05-31 0.475 2010-06-30 0.525 2010-07-31 0.53 2010-08-31 0.52 2010-09-30 0.585 2010-10-31 0.56 2010-11-30 0.525 2010-12-31 0.525 2011-01-31 0.5 2011-02-28 0.49 2011-03-31 0.495 2011-04-30 0.535 2011-05-31 0.52 2011-06-30 0.535 2011-07-31 0.53 2011-08-31 0.525 2011-09-30 0.485 2011-10-31 0.495 2011-11-30 0.435 2011-12-31 0.1 2012-01-31 0.435 2012-02-29 0.45 2012-03-31 0.405 2012-04-30 0.395 2012-05-31 0.475 2012-06-30 0.48 2012-07-31 0.415 2012-08-31 0.43 2012-09-30 0.425 2012-10-31 0.365 2012-11-30 0.44 2012-12-31 0.265 2013-01-31 0.405 2013-02-28 0.365 2013-03-31 0.455 2013-04-30 0.395 2013-05-31 0.44 2013-06-30 0.35 2013-07-31 0.38 2013-08-31 0.355 2013-09-30 0.32 2013-10-31 0.3 2013-11-30 0.35 2013-12-31 -0.25 2014-01-31 0.375 2014-02-28 0.3 2014-03-31 0.125 2014-04-30 0.085 2014-05-31 0.445 2014-06-30 0.19 2014-07-31 0.09 2014-08-31 0.39 2014-09-30 0.435 2014-10-31 0.46 2014-11-30 0.48 2014-12-31 0 2015-01-31 0.495 2015-02-28 0.425 2015-03-31 0.46 2015-04-30 0.465 2015-05-31 0.495 2015-06-30 0.46 2015-07-31 0.435 2015-08-31 0.485 2015-09-30 0.24 2015-10-31 0.4 2015-11-30 0.42 2015-12-31 -0.175 2016-01-31 0.4 2016-02-29 0.475 2016-03-31 0.34 2016-04-30 0.415 2016-05-31 0.47 2016-06-30 0.505 2016-07-31 0.46 2016-08-31 0.16 2016-09-30 0.11 2016-10-31 0.18 2016-11-30 0.085 2016-12-31 0.015 2017-01-31 0.225 2017-02-28 0.1 2017-03-31 0.01 2017-04-30 0.175 2017-05-31 0.2 2017-06-30 0.195 2017-07-31 0.21 2017-08-31 0.165 2017-09-30 0.115 2017-10-31 0.24 2017-11-30 0.45 2017-12-31 0.44 2018-01-31 0.455 2018-02-28 0.44 2018-03-31 0.45 2018-04-30 0.455 2018-05-31 0.48 2018-06-30 0.49