Quarterly (Feb,May,Aug,Nov)	Number
1996-02-29	37
1996-05-31	39
1996-08-31	39
1996-11-30	39
1997-02-28	39
1997-05-31	39
1997-08-31	44
1997-11-30	44
1998-02-28	47
1998-05-31	45
1998-08-31	45
1998-11-30	43
1999-02-28	43
1999-05-31	42
1999-08-31	44
1999-11-30	42
2000-02-29	41
2000-05-31	46
2000-08-31	46
2000-11-30	45
2001-02-28	45
2001-05-31	43
2001-08-31	42
2001-11-30	41
2002-02-28	41
2002-05-31	41
2002-08-31	41
2002-11-30	41
2003-02-28	40
2003-05-31	40
2003-08-31	41
2003-11-30	41
2004-02-29	41
2004-05-31	41
2004-08-31	41
2004-11-30	40
2005-02-28	40
2005-05-31	40
2005-08-31	40
2005-11-30	39
2006-02-28	39
2006-05-31	39
2006-08-31	39
2006-11-30	39
2007-02-28	39
2007-05-31	39
2007-08-31	39
2007-11-30	35
2008-02-29	36
2008-05-31	36
2008-08-31	36
2008-11-30	36
2009-02-28	36
2009-05-31	36
2009-08-31	36
2009-11-30	36
2010-02-28	34
2010-05-31	34
2010-08-31	34
2010-11-30	34
2011-02-28	34
2011-05-31	34
2011-08-31	35
2011-11-30	35
2012-02-29	35
2012-05-31	34
2012-08-31	34
2012-11-30	34
2013-02-28	34
2013-05-31	34
2013-08-31	23
2013-11-30	23
2014-02-28	23
2014-05-31	23
2014-08-31	23
2014-11-30	23
2015-02-28	23
2015-05-31	23
2015-08-31	23
2015-11-30	23
2016-02-29	23
2016-05-31	23
2016-08-31	23
2016-11-30	23
2017-02-28	23
2017-05-31	23
2017-08-31	23
2017-11-30	23
2018-02-28	23
2018-05-31	23