Month Percent 1996-01-31 5.7891 1996-02-29 6.2562 1996-03-31 6.0114 1996-04-30 5.9335 1996-05-31 5.96 1996-06-30 5.7465 1996-07-31 5.7291 1996-08-31 5.6967 1996-09-30 5.7243 1996-10-31 5.7622 1996-11-30 5.9514 1996-12-31 5.9195 1997-01-31 5.9455 1997-02-28 5.9598 1997-03-31 6.1539 1997-04-30 6.2968 1997-05-31 6.552 1997-06-30 6.8924 1997-07-31 6.972 1997-08-31 6.9883 1997-09-30 7.0539 1997-10-31 7.0761 1997-11-30 7.1425 1997-12-31 7.1714 1998-01-31 7.1917 1998-02-28 7.207 1998-03-31 7.2191 1998-04-30 7.171 1998-05-31 7.1584 1998-06-30 7.2636 1998-07-31 7.2811 1998-08-31 7.4063 1998-09-30 7.2982 1998-10-31 7.2105 1998-11-30 6.6845 1998-12-31 6.1714 1999-01-31 5.8498 1999-02-28 5.4518 1999-03-31 5.2678 1999-04-30 5.1233 1999-05-31 5.1339 1999-06-30 4.8766 1999-07-31 4.8423 1999-08-31 4.8331 1999-09-30 5.0068 1999-10-31 5.165 1999-11-30 5.2591 1999-12-31 5.16 2000-01-31 5.507 2000-02-29 5.8517 2000-03-31 5.8004 2000-04-30 5.8347 2000-05-31 5.8707 2000-06-30 5.802 2000-07-31 5.8379 2000-08-31 5.818 2000-09-30 5.8724 2000-10-31 5.8305 2000-11-30 5.8277 2000-12-31 5.7234 2001-01-31 5.7909 2001-02-28 5.6345 2001-03-31 5.5289 2001-04-30 5.3116 2001-05-31 5.1476 2001-06-30 5.0064 2001-07-31 5.1105 2001-08-31 4.8109 2001-09-30 4.7355 2001-10-31 4.4263 2001-11-30 3.848 2001-12-31 3.9537 2002-01-31 3.8614 2002-02-28 3.8565 2002-03-31 3.9078 2002-04-30 3.831 2002-05-31 3.8307 2002-06-30 3.7667 2002-07-31 3.7626 2002-08-31 3.8464 2002-09-30 3.8383 2002-10-31 3.8776 2002-11-30 3.8195 2002-12-31 3.9158 2003-01-31 3.8241 2003-02-28 3.6498 2003-03-31 3.6045 2003-04-30 3.5978 2003-05-31 3.5675 2003-06-30 3.5752 2003-07-31 3.3678 2003-08-31 3.3435 2003-09-30 3.44 2003-10-31 3.4243 2003-11-30 3.655 2003-12-31 3.7112 2004-01-31 3.6964 2004-02-29 3.9 2004-03-31 3.9446 2004-04-30 3.936 2004-05-31 4.1974 2004-06-30 4.3852 2004-07-31 4.4611 2004-08-31 4.6719 2004-09-30 4.7068 2004-10-31 4.7107 2004-11-30 4.7052 2004-12-31 4.7126 2005-01-31 4.724 2005-02-28 4.7193 2005-03-31 4.7114 2005-04-30 4.7212 2005-05-31 4.7198 2005-06-30 4.7216 2005-07-31 4.7038 2005-08-31 4.4734 2005-09-30 4.4702 2005-10-31 4.465 2005-11-30 4.4593 2005-12-31 4.4755 2006-01-31 4.4619 2006-02-28 4.4408 2006-03-31 4.4404 2006-04-30 4.4433 2006-05-31 4.4943 2006-06-30 4.5377 2006-07-31 4.5221 2006-08-31 4.7123 2006-09-30 4.7802 2006-10-31 4.8027 2006-11-30 5.0057 2006-12-31 5.0708 2007-01-31 5.1939 2007-02-28 5.2735 2007-03-31 5.2725 2007-04-30 5.2697 2007-05-31 5.4817 2007-06-30 5.5429 2007-07-31 5.7689 2007-08-31 5.8295 2007-09-30 5.8268 2007-10-31 5.7463 2007-11-30 5.7323 2007-12-31 5.5632 2008-01-31 5.4791 2008-02-29 5.2621 2008-03-31 5.2639 2008-04-30 5.0623 2008-05-31 5.057 2008-06-30 5.1031 2008-07-31 5.1165 2008-08-31 5.0805 2008-09-30 4.952 2008-10-31 4.4574 2008-11-30 2.7963 2008-12-31 1.8283 2009-01-31 1.3621 2009-02-28 0.9098 2009-03-31 0.6755 2009-04-30 0.565 2009-05-31 0.5058 2009-06-30 0.4959 2009-07-31 0.4415 2009-08-31 0.4498 2009-09-30 0.4384 2009-10-31 0.457 2009-11-30 0.4531 2009-12-31 0.4705 2010-01-31 0.4975 2010-02-28 0.496 2010-03-31 0.5085 2010-04-30 0.495 2010-05-31 0.4961 2010-06-30 0.5057 2010-07-31 0.5307 2010-08-31 0.521 2010-09-30 0.5273 2010-10-31 0.5398 2010-11-30 0.5409 2010-12-31 0.5567 2011-01-31 0.5375 2011-02-28 0.5175 2011-03-31 0.5239 2011-04-30 0.5383 2011-05-31 0.5265 2011-06-30 0.5323 2011-07-31 0.5317 2011-08-31 0.523 2011-09-30 0.5218 2011-10-31 0.5124 2011-11-30 0.4784 2011-12-31 0.459 2012-01-31 0.464 2012-02-29 0.4598 2012-03-31 0.4714 2012-04-30 0.4621 2012-05-31 0.4482 2012-06-30 0.4668 2012-07-31 0.4655 2012-08-31 0.4357 2012-09-30 0.4623 2012-10-31 0.4357 2012-11-30 0.4259 2012-12-31 0.4445 2013-01-31 0.4509 2013-02-28 0.4308 2013-03-31 0.4498 2013-04-30 0.4633 2013-05-31 0.446 2013-06-30 0.4528 2013-07-31 0.4517 2013-08-31 0.4338 2013-09-30 0.4538 2013-10-31 0.4446 2013-11-30 0.4324 2013-12-31 0.4145 2014-01-31 0.4323 2014-02-28 0.4245 2014-03-31 0.435 2014-04-30 0.4175 2014-05-31 0.4203 2014-06-30 0.4533 2014-07-31 0.465 2014-08-31 0.447 2014-09-30 0.4825 2014-10-31 0.48 2014-11-30 0.4758 2014-12-31 0.4598 2015-01-31 0.4905 2015-02-28 0.4755 2015-03-31 0.4943 2015-04-30 0.5068 2015-05-31 0.5039 2015-06-30 0.5048 2015-07-31 0.5163 2015-08-31 0.5133 2015-09-30 0.5127 2015-10-31 0.5159 2015-11-30 0.5121 2015-12-31 0.5226 2016-01-31 0.535 2016-02-29 0.5312 2016-03-31 0.5314 2016-04-30 0.5257 2016-05-31 0.5253 2016-06-30 0.5186 2016-07-31 0.4757 2016-08-31 0.315 2016-09-30 0.2711 2016-10-31 0.2705 2016-11-30 0.2648 2016-12-31 0.2573 2017-01-31 0.2593 2017-02-28 0.254 2017-03-31 0.2226 2017-04-30 0.2331 2017-05-31 0.2357 2017-06-30 0.2364 2017-07-31 0.2464 2017-08-31 0.218 2017-09-30 0.2207 2017-10-31 0.263 2017-11-30 0.4645 2017-12-31 0.4584 2018-01-31 0.4727 2018-02-28 0.4688 2018-03-31 0.4714 2018-04-30 0.4808 2018-05-31 0.4845 2018-06-30 0.4845