Month Percent 1996-01-31 6.2586 1996-02-29 6.0792 1996-03-31 5.9552 1996-04-30 5.91 1996-05-31 5.9205 1996-06-30 5.7105 1996-07-31 5.617 1996-08-31 5.6529 1996-09-30 5.6662 1996-10-31 5.7887 1996-11-30 6.1557 1996-12-31 6.18 1997-01-31 6.1286 1997-02-28 5.998 1997-03-31 5.9826 1997-04-30 6.1909 1997-05-31 6.278 1997-06-30 6.4581 1997-07-31 6.7617 1997-08-31 6.9655 1997-09-30 7.0393 1997-10-31 7.0817 1997-11-30 7.2515 1997-12-31 7.2998 1998-01-31 7.2712 1998-02-28 7.2405 1998-03-31 7.2555 1998-04-30 7.2048 1998-05-31 7.1745 1998-06-30 7.4157 1998-07-31 7.4702 1998-08-31 7.3905 1998-09-30 7.1507 1998-10-31 6.8505 1998-11-30 6.4976 1998-12-31 5.9148 1999-01-31 5.4735 1999-02-28 5.2003 1999-03-31 5.0263 1999-04-30 4.9995 1999-05-31 5.0071 1999-06-30 4.8677 1999-07-31 4.8139 1999-08-31 4.9498 1999-09-30 5.1632 1999-10-31 5.3398 1999-11-30 5.3336 1999-12-31 5.5355 2000-01-31 5.8528 2000-02-29 5.9876 2000-03-31 5.9626 2000-04-30 6.0131 2000-05-31 5.9843 2000-06-30 5.9041 2000-07-31 5.8981 2000-08-31 5.9018 2000-09-30 5.8769 2000-10-31 5.8057 2000-11-30 5.7659 2000-12-31 5.6887 2001-01-31 5.6075 2001-02-28 5.5198 2001-03-31 5.3295 2001-04-30 5.1903 2001-05-31 5.0226 2001-06-30 5.0388 2001-07-31 5.0632 2001-08-31 4.8011 2001-09-30 4.5108 2001-10-31 4.2209 2001-11-30 3.803 2001-12-31 3.8432 2002-01-31 3.8607 2002-02-28 3.8843 2002-03-31 3.9535 2002-04-30 3.9871 2002-05-31 3.9632 2002-06-30 3.995 2002-07-31 3.8822 2002-08-31 3.8212 2002-09-30 3.83 2002-10-31 3.7867 2002-11-30 3.7898 2002-12-31 3.853 2003-01-31 3.8186 2003-02-28 3.5835 2003-03-31 3.4936 2003-04-30 3.473 2003-05-31 3.4618 2003-06-30 3.4714 2003-07-31 3.3272 2003-08-31 3.358 2003-09-30 3.528 2003-10-31 3.627 2003-11-30 3.8 2003-12-31 3.8326 2004-01-31 3.8895 2004-02-29 3.9918 2004-03-31 4.1198 2004-04-30 4.2028 2004-05-31 4.3339 2004-06-30 4.5945 2004-07-31 4.6511 2004-08-31 4.7731 2004-09-30 4.7534 2004-10-31 4.7307 2004-11-30 4.708 2004-12-31 4.7029 2005-01-31 4.7045 2005-02-28 4.7323 2005-03-31 4.8105 2005-04-30 4.7636 2005-05-31 4.7265 2005-06-30 4.69 2005-07-31 4.5271 2005-08-31 4.4536 2005-09-30 4.455 2005-10-31 4.4424 2005-11-30 4.4461 2005-12-31 4.46 2006-01-31 4.4274 2006-02-28 4.4195 2006-03-31 4.4217 2006-04-30 4.4575 2006-05-31 4.5267 2006-06-30 4.5675 2006-07-31 4.5605 2006-08-31 4.7745 2006-09-30 4.8698 2006-10-31 4.9766 2006-11-30 5.0668 2006-12-31 5.1211 2007-01-31 5.3386 2007-02-28 5.4128 2007-03-31 5.3977 2007-04-30 5.4868 2007-05-31 5.6145 2007-06-30 5.7226 2007-07-31 5.8639 2007-08-31 5.8709 2007-09-30 5.7903 2007-10-31 5.7048 2007-11-30 5.6402 2007-12-31 5.4784 2008-01-31 5.2439 2008-02-29 5.1595 2008-03-31 5.1097 2008-04-30 4.9584 2008-05-31 5.0183 2008-06-30 5.1886 2008-07-31 5.198 2008-08-31 5.1928 2008-09-30 5.0118 2008-10-31 4.2202 2008-11-30 2.4068 2008-12-31 1.5379 2009-01-31 1.0912 2009-02-28 0.8365 2009-03-31 0.677 2009-04-30 0.6795 2009-05-31 0.5803 2009-06-30 0.5668 2009-07-31 0.4737 2009-08-31 0.4535 2009-09-30 0.392 2009-10-31 0.4382 2009-11-30 0.45 2009-12-31 0.4705 2010-01-31 0.4983 2010-02-28 0.5073 2010-03-31 0.518 2010-04-30 0.5205 2010-05-31 0.5226 2010-06-30 0.5266 2010-07-31 0.538 2010-08-31 0.5302 2010-09-30 0.53 2010-10-31 0.5421 2010-11-30 0.5473 2010-12-31 0.5702 2011-01-31 0.5798 2011-02-28 0.6171 2011-03-31 0.6098 2011-04-30 0.6203 2011-05-31 0.5715 2011-06-30 0.5543 2011-07-31 0.55 2011-08-31 0.5364 2011-09-30 0.5316 2011-10-31 0.5262 2011-11-30 0.5064 2011-12-31 0.4783 2012-01-31 0.4688 2012-02-29 0.4612 2012-03-31 0.47 2012-04-30 0.4708 2012-05-31 0.4582 2012-06-30 0.4487 2012-07-31 0.4445 2012-08-31 0.4259 2012-09-30 0.4453 2012-10-31 0.4274 2012-11-30 0.4189 2012-12-31 0.4487 2013-01-31 0.45 2013-02-28 0.4333 2013-03-31 0.4468 2013-04-30 0.46 2013-05-31 0.4479 2013-06-30 0.4558 2013-07-31 0.4522 2013-08-31 0.44 2013-09-30 0.4598 2013-10-31 0.4465 2013-11-30 0.4364 2013-12-31 0.4238 2014-01-31 0.4355 2014-02-28 0.4268 2014-03-31 0.4364 2014-04-30 0.426 2014-05-31 0.4265 2014-06-30 0.4624 2014-07-31 0.4815 2014-08-31 0.4795 2014-09-30 0.4977 2014-10-31 0.4893 2014-11-30 0.4955 2014-12-31 0.4871 2015-01-31 0.495 2015-02-28 0.4905 2015-03-31 0.5077 2015-04-30 0.526 2015-05-31 0.5363 2015-06-30 0.5386 2015-07-31 0.5539 2015-08-31 0.5548 2015-09-30 0.5595 2015-10-31 0.5605 2015-11-30 0.5714 2015-12-31 0.5993 2016-01-31 0.5908 2016-02-29 0.5776 2016-03-31 0.5698 2016-04-30 0.5657 2016-05-31 0.5563 2016-06-30 0.5418 2016-07-31 0.4071 2016-08-31 0.3361 2016-09-30 0.2948 2016-10-31 0.2898 2016-11-30 0.3055 2016-12-31 0.3115 2017-01-31 0.3193 2017-02-28 0.3113 2017-03-31 0.2804 2017-04-30 0.2675 2017-05-31 0.2726 2017-06-30 0.2784 2017-07-31 0.294 2017-08-31 0.2589 2017-09-30 0.3031 2017-10-31 0.4066 2017-11-30 0.4873 2017-12-31 0.4932 2018-01-31 0.4941 2018-02-28 0.5008 2018-03-31 0.5579 2018-04-30 0.6255 2018-05-31 0.539 2018-06-30 0.5679