Month Percent 1996-01-31 5.8009 1996-02-29 6.27 1996-03-31 6.0043 1996-04-30 5.935 1996-05-31 5.9748 1996-06-30 5.748 1996-07-31 5.7474 1996-08-31 5.6995 1996-09-30 5.7367 1996-10-31 5.7752 1996-11-30 5.919 1996-12-31 5.8675 1997-01-31 5.9114 1997-02-28 5.948 1997-03-31 5.9432 1997-04-30 5.952 1997-05-31 6.1473 1997-06-30 6.2538 1997-07-31 6.523 1997-08-31 6.8865 1997-09-30 6.9714 1997-10-31 6.9883 1997-11-30 7.1318 1997-12-31 7.1531 1998-01-31 7.1838 1998-02-28 7.2005 1998-03-31 7.2105 1998-04-30 7.1545 1998-05-31 7.1524 1998-06-30 7.233 1998-07-31 7.2478 1998-08-31 7.4053 1998-09-30 7.2902 1998-10-31 7.2477 1998-11-30 6.6807 1998-12-31 6.2107 1999-01-31 5.8785 1999-02-28 5.4928 1999-03-31 5.3141 1999-04-30 5.1433 1999-05-31 5.1382 1999-06-30 4.857 1999-07-31 4.8505 1999-08-31 4.8417 1999-09-30 4.9777 1999-10-31 5.1295 1999-11-30 5.2343 1999-12-31 5.0248 2000-01-31 5.434 2000-02-29 5.864 2000-03-31 5.7704 2000-04-30 5.8733 2000-05-31 5.8619 2000-06-30 5.7945 2000-07-31 5.8448 2000-08-31 5.8311 2000-09-30 5.8795 2000-10-31 5.8293 2000-11-30 5.847 2000-12-31 5.7929 2001-01-31 5.7882 2001-02-28 5.661 2001-03-31 5.5057 2001-04-30 5.2863 2001-05-31 5.209 2001-06-30 4.9169 2001-07-31 5.1525 2001-08-31 4.7741 2001-09-30 4.77 2001-10-31 4.4807 2001-11-30 3.8139 2001-12-31 4.1039 2002-01-31 3.8602 2002-02-28 3.845 2002-03-31 3.9468 2002-04-30 3.7681 2002-05-31 3.8116 2002-06-30 3.67 2002-07-31 3.6996 2002-08-31 3.8595 2002-09-30 3.8098 2002-10-31 3.8761 2002-11-30 3.7595 2002-12-31 3.98 2003-01-31 3.7739 2003-02-28 3.6175 2003-03-31 3.6207 2003-04-30 3.58 2003-05-31 3.573 2003-06-30 3.5436 2003-07-31 3.3491 2003-08-31 3.3425 2003-09-30 3.4459 2003-10-31 3.3728 2003-11-30 3.614 2003-12-31 3.7333 2004-01-31 3.6693 2004-02-29 3.8725 2004-03-31 3.9524 2004-04-30 3.85 2004-05-31 4.1924 2004-06-30 4.3507 2004-07-31 4.4457 2004-08-31 4.669 2004-09-30 4.7107 2004-10-31 4.7112 2004-11-30 4.7068 2004-12-31 4.7271 2005-01-31 4.7158 2005-02-28 4.715 2005-03-31 4.7038 2005-04-30 4.7264 2005-05-31 4.7225 2005-06-30 4.7339 2005-07-31 4.7126 2005-08-31 4.4895 2005-09-30 4.495 2005-10-31 4.4624 2005-11-30 4.4707 2005-12-31 4.5168 2006-01-31 4.4645 2006-02-28 4.4398 2006-03-31 4.4559 2006-04-30 4.455 2006-05-31 4.4898 2006-06-30 4.5298 2006-07-31 4.516 2006-08-31 4.7048 2006-09-30 4.7717 2006-10-31 4.7945 2006-11-30 4.9998 2006-12-31 5.0684 2007-01-31 5.1841 2007-02-28 5.2625 2007-03-31 5.2582 2007-04-30 5.2497 2007-05-31 5.4536 2007-06-30 5.5345 2007-07-31 5.77 2007-08-31 5.8402 2007-09-30 5.8265 2007-10-31 5.748 2007-11-30 5.7427 2007-12-31 5.6011 2008-01-31 5.5027 2008-02-29 5.2667 2008-03-31 5.2703 2008-04-30 5.0643 2008-05-31 5.0605 2008-06-30 5.0952 2008-07-31 5.1 2008-08-31 5.0563 2008-09-30 4.9155 2008-10-31 4.4674 2008-11-30 2.8313 2008-12-31 1.8548 2009-01-31 1.4319 2009-02-28 0.948 2009-03-31 0.6859 2009-04-30 0.5525 2009-05-31 0.4929 2009-06-30 0.4834 2009-07-31 0.438 2009-08-31 0.449 2009-09-30 0.4432 2009-10-31 0.4577 2009-11-30 0.4536 2009-12-31 0.47 2010-01-31 0.4973 2010-02-28 0.4938 2010-03-31 0.505 2010-04-30 0.489 2010-05-31 0.4897 2010-06-30 0.5016 2010-07-31 0.53 2010-08-31 0.5195 2010-09-30 0.5273 2010-10-31 0.5402 2010-11-30 0.538 2010-12-31 0.5438 2011-01-31 0.526 2011-02-28 0.5023 2011-03-31 0.5161 2011-04-30 0.5344 2011-05-31 0.521 2011-06-30 0.5318 2011-07-31 0.5293 2011-08-31 0.522 2011-09-30 0.5189 2011-10-31 0.51 2011-11-30 0.4677 2011-12-31 0.4478 2012-01-31 0.4621 2012-02-29 0.4629 2012-03-31 0.4723 2012-04-30 0.4584 2012-05-31 0.4445 2012-06-30 0.4705 2012-07-31 0.4709 2012-08-31 0.4324 2012-09-30 0.4648 2012-10-31 0.4322 2012-11-30 0.4255 2012-12-31 0.4426 2013-01-31 0.45 2013-02-28 0.4275 2013-03-31 0.4515 2013-04-30 0.4629 2013-05-31 0.445 2013-06-30 0.4503 2013-07-31 0.4509 2013-08-31 0.4298 2013-09-30 0.4493 2013-10-31 0.44 2013-11-30 0.4252 2013-12-31 0.4023 2014-01-31 0.4309 2014-02-28 0.4233 2014-03-31 0.4288 2014-04-30 0.41 2014-05-31 0.4183 2014-06-30 0.4493 2014-07-31 0.4557 2014-08-31 0.4378 2014-09-30 0.4809 2014-10-31 0.4793 2014-11-30 0.4705 2014-12-31 0.4555 2015-01-31 0.4895 2015-02-28 0.469 2015-03-31 0.4895 2015-04-30 0.5035 2015-05-31 0.5039 2015-06-30 0.5048 2015-07-31 0.5163 2015-08-31 0.5115 2015-09-30 0.5066 2015-10-31 0.5157 2015-11-30 0.51 2015-12-31 0.511 2016-01-31 0.529 2016-02-29 0.5279 2016-03-31 0.5269 2016-04-30 0.5198 2016-05-31 0.5178 2016-06-30 0.515 2016-07-31 0.491 2016-08-31 0.3043 2016-09-30 0.2536 2016-10-31 0.2602 2016-11-30 0.2539 2016-12-31 0.2495 2017-01-31 0.2531 2017-02-28 0.2495 2017-03-31 0.2213 2017-04-30 0.2325 2017-05-31 0.2355 2017-06-30 0.2352 2017-07-31 0.2407 2017-08-31 0.2089 2017-09-30 0.2126 2017-10-31 0.2393 2017-11-30 0.4618 2017-12-31 0.4584 2018-01-31 0.4695 2018-02-28 0.4648 2018-03-31 0.4602 2018-04-30 0.4748 2018-05-31 0.4805 2018-06-30 0.4819