Month Percent 1999-01-31 6.07 1999-02-28 5.73 1999-03-31 5.4 1999-04-30 5.36 1999-05-31 5.25 1999-06-30 5.03 1999-07-31 5.01 1999-08-31 4.93 1999-09-30 4.93 1999-10-31 5.07 1999-11-30 5.21 1999-12-31 5.24 2000-01-31 5.44 2000-02-29 5.68 2000-03-31 5.89 2000-04-30 5.93 2000-05-31 5.98 2000-06-30 6.02 2000-07-31 5.96 2000-08-31 5.99 2000-09-30 5.95 2000-10-31 5.7 2000-11-30 5.65 2000-12-31 5.59 2001-01-31 5.82 2001-02-28 5.7 2001-03-31 5.54 2001-04-30 5.32 2001-05-31 5.09 2001-06-30 5.02 2001-07-31 5.1 2001-08-31 5.01 2001-09-30 4.83 2001-10-31 4.56 2001-11-30 4.2 2001-12-31 4.13 2002-01-31 3.99 2002-02-28 4 2002-03-31 3.87 2002-04-30 3.91 2002-05-31 3.94 2002-06-30 3.91 2002-07-31 4.06 2002-08-31 3.97 2002-09-30 3.91 2002-10-31 3.89 2002-11-30 3.79 2002-12-31 3.82 2003-01-31 3.79 2003-02-28 3.73 2003-03-31 3.61 2003-04-30 3.6 2003-05-31 3.53 2003-06-30 3.52 2003-07-31 3.46 2003-08-31 3.41 2003-09-30 3.46 2003-10-31 3.48 2003-11-30 3.58 2003-12-31 3.7 2004-01-31 3.82 2004-02-29 3.86 2004-03-31 4.12 2004-04-30 3.98 2004-05-31 4.22 2004-06-30 4.37 2004-07-31 4.46 2004-08-31 4.57 2004-09-30 4.71 2004-10-31 4.79 2004-11-30 4.79 2004-12-31 4.76 2005-01-31 4.76 2005-02-28 4.83 2005-03-31 4.83 2005-04-30 4.82 2005-05-31 4.8 2005-06-30 4.77 2005-07-31 4.74 2005-08-31 4.64 2005-09-30 4.56 2005-10-31 4.51 2005-11-30 4.54 2005-12-31 4.53 2006-01-31 4.59 2006-02-28 4.58 2006-03-31 4.6 2006-04-30 4.62 2006-05-31 4.63 2006-06-30 4.63 2006-07-31 4.64 2006-08-31 4.73 2006-09-30 4.85 2006-10-31 4.87 2006-11-30 4.94 2006-12-31 5.04 2007-01-31 5.14 2007-02-28 5.23 2007-03-31 5.33 2007-04-30 5.41 2007-05-31 5.49 2007-06-30 5.56 2007-07-31 5.68 2007-08-31 5.87 2007-09-30 6.04 2007-10-31 5.97 2007-11-30 5.97 2007-12-31 5.93 2008-01-31 5.75 2008-02-29 5.61 2008-03-31 5.57 2008-04-30 5.55 2008-05-31 5.5 2008-06-30 5.53 2008-07-31 5.62 2008-08-31 5.48 2008-09-30 5.5 2008-10-31 5.6 2008-11-30 5.07 2008-12-31 4.23 2009-01-31 3.76 2009-02-28 3.18 2009-03-31 2.73 2009-04-30 2.59 2009-05-31 2.42 2009-06-30 2.26 2009-07-31 2.19 2009-08-31 2.14 2009-09-30 2.17 2009-10-31 2.14 2009-11-30 2.09 2009-12-31 1.85 2010-01-31 1.73 2010-02-28 1.75 2010-03-31 1.74 2010-04-30 1.49 2010-05-31 1.51 2010-06-30 1.6 2010-07-31 1.6 2010-08-31 1.59 2010-09-30 1.57 2010-10-31 1.54 2010-11-30 1.6 2010-12-31 1.66 2011-01-31 0.88 2011-02-28 0.89 2011-03-31 0.9 2011-04-30 0.9 2011-05-31 0.93 2011-06-30 0.94 2011-07-31 0.94 2011-08-31 0.99 2011-09-30 0.97 2011-10-31 1 2011-11-30 1.05 2011-12-31 1.05 2012-01-31 1.16 2012-02-29 1.23 2012-03-31 1.27 2012-04-30 1.25 2012-05-31 1.31 2012-06-30 1.26 2012-07-31 1.31 2012-08-31 1.3 2012-09-30 1.29 2012-10-31 1.38 2012-11-30 1.39 2012-12-31 1.34 2013-01-31 1.36 2013-02-28 1.29 2013-03-31 1.25 2013-04-30 1.22 2013-05-31 1.09 2013-06-30 1.06 2013-07-31 1.02 2013-08-31 0.97 2013-09-30 0.96 2013-10-31 0.88 2013-11-30 0.85 2013-12-31 0.8 2014-01-31 0.79 2014-02-28 0.8 2014-03-31 0.81 2014-04-30 1.16 2014-05-31 1.11 2014-06-30 1.15 2014-07-31 1.18 2014-08-31 1.16 2014-09-30 1.16 2014-10-31 1.15 2014-11-30 1.15 2014-12-31 1.06 2015-01-31 1.04 2015-02-28 1.35 2015-03-31 1.19 2015-04-30 1.22 2015-05-31 0.99 2015-06-30 1.02 2015-07-31 0.98 2015-08-31 0.95 2015-09-30 0.98 2015-10-31 0.9 2015-11-30 0.88 2015-12-31 0.86 2016-01-31 0.88 2016-02-29 0.83 2016-03-31 0.82 2016-04-30 0.82 2016-05-31 0.81 2016-06-30 0.79 2016-07-31 0.76 2016-08-31 0.68 2016-09-30 0.65 2016-10-31 0.62 2016-11-30 0.56 2016-12-31 0.56 2017-01-31 0.5 2017-02-28 0.5 2017-03-31 0.48 2017-04-30 0.47 2017-05-31 0.45 2017-06-30 0.44 2017-07-31 0.42 2017-08-31 0.38 2017-09-30 0.39 2017-10-31 0.41 2017-11-30 0.48 2017-12-31 0.5 2018-01-31 0.52 2018-02-28 0.58 2018-03-31 0.55 2018-04-30 0.61 2018-05-31 0.66 2018-06-30 0.68 2018-07-31 0.69 2018-08-31 0.75 2018-09-30 0.79 2018-10-31 0.81 2018-11-30 0.83 2018-12-31 0.85 2019-01-31 0.91 2019-02-28 0.94 2019-03-31 0.93 2019-04-30 0.95 2019-05-31 0.95 2019-06-30 0.95 2019-07-31 0.97 2019-08-31 0.95 2019-09-30 0.97 2019-10-31 0.97 2019-11-30 0.98 2019-12-31 0.97 2020-01-31 0.97 2020-02-29 0.96 2020-03-31 0.82 2020-04-30 0.68 2020-05-31 0.65 2020-06-30 0.63 2020-07-31 0.56 2020-08-31 0.49 2020-09-30 0.49 2020-10-31 0.44 2020-11-30 0.4 2020-12-31 0.39 2021-01-31 0.38 2021-02-28 0.35 2021-03-31 0.34 2021-04-30 0.32 2021-05-31 0.29 2021-06-30 0.29 2021-07-31 0.23 2021-08-31 0.2 2021-09-30 0.18 2021-10-31 0.18 2021-11-30 0.2 2021-12-31 0.24 2022-01-31 0.31 2022-02-28 0.44 2022-03-31 0.54 2022-04-30 0.66 2022-05-31 0.78 2022-06-30 1 2022-07-31 1.09 2022-08-31 1.4 2022-09-30 1.73 2022-10-31 2.09 2022-11-30 2.65 2022-12-31 3.02 2023-01-31 3.12 2023-02-28 3.42 2023-03-31 3.83 2023-04-30 3.79 2023-05-31 4.02 2023-06-30 4.36 2023-07-31 4.48 2023-08-31 4.76 2023-09-30 5.01 2023-10-31 4.94 2023-11-30 4.97 2023-12-31 5.1