Quarterly (Feb,May,Aug,Nov)	Number
1996-02-29	40
1996-05-31	40
1996-08-31	40
1996-11-30	41
1997-02-28	41
1997-05-31	41
1997-08-31	42
1997-11-30	42
1998-02-28	42
1998-05-31	45
1998-08-31	47
1998-11-30	48
1999-02-28	42
1999-05-31	40
1999-08-31	39
1999-11-30	35
2000-02-29	34
2000-05-31	29
2000-08-31	29
2000-11-30	30
2001-02-28	29
2001-05-31	26
2001-08-31	26
2001-11-30	28
2002-02-28	27
2002-05-31	26
2002-08-31	25
2002-11-30	25
2003-02-28	25
2003-05-31	25
2003-08-31	25
2003-11-30	24
2004-02-29	25
2004-05-31	24
2004-08-31	23
2004-11-30	23
2005-02-28	22
2005-05-31	22
2005-08-31	22
2005-11-30	22
2006-02-28	22
2006-05-31	22
2006-08-31	22
2006-11-30	22
2007-02-28	22
2007-05-31	22
2007-08-31	22
2007-11-30	18
2008-02-29	23
2008-05-31	23
2008-08-31	22
2008-11-30	21
2009-02-28	21
2009-05-31	20
2009-08-31	20
2009-11-30	20
2010-02-28	19
2010-05-31	19
2010-08-31	19
2010-11-30	19
2011-02-28	18
2011-05-31	17
2011-08-31	16
2011-11-30	16
2012-02-29	16
2012-05-31	16
2012-08-31	16
2012-11-30	16
2013-02-28	16
2013-05-31	16
2013-08-31	16
2013-11-30	16
2014-02-28	16
2014-05-31	16
2014-08-31	16
2014-11-30	16
2015-02-28	16
2015-05-31	16
2015-08-31	16
2015-11-30	16
2016-02-29	16
2016-05-31	16
2016-08-31	16
2016-11-30	15
2017-02-28	15
2017-05-31	15
2017-08-31	15
2017-11-30	15
2018-02-28	15
2018-05-31	15