Quarter	US dollars
1986-09-30	6
1986-12-31	6
1987-03-31	6
1987-06-30	26
1987-09-30	21
1987-12-31	63
1988-03-31	38
1988-06-30	14
1988-09-30	75
1988-12-31	13
1989-03-31	20
1989-06-30	12
1989-09-30	30
1989-12-31	40
1990-03-31	25
1990-06-30	21
1990-09-30	34
1990-12-31	43
1991-03-31	50
1991-06-30	36
1991-09-30	29
1991-12-31	47
1992-03-31	32
1992-06-30	40
1992-09-30	45
1992-12-31	28
1993-03-31	16
1993-06-30	10
1993-09-30	44
1993-12-31	52
1994-03-31	32
1994-06-30	40
1994-09-30	48
1994-12-31	55
1995-03-31	115
1995-06-30	142
1995-09-30	123
1995-12-31	133
1996-03-31	117
1996-06-30	67
1996-09-30	88
1996-12-31	193
1997-03-31	453
1997-06-30	389
1997-09-30	343
1997-12-31	152
1998-03-31	126
1998-06-30	89
1998-09-30	105
1998-12-31	13
1999-03-31	74
1999-06-30	47
1999-09-30	15
1999-12-31	33
2000-03-31	65
2000-06-30	32
2000-09-30	128
2000-12-31	147
2001-03-31	133
2001-06-30	180
2001-09-30	136
2001-12-31	5
2002-03-31	21
2002-06-30	3
2002-09-30	0
2002-12-31	2
2003-03-31	1
2003-06-30	1
2003-09-30	2
2003-12-31	2
2004-03-31	2
2004-06-30	2
2004-09-30	2
2004-12-31	1
2005-03-31	11
2005-06-30	39
2005-09-30	142
2005-12-31	153
2006-03-31	220
2006-06-30	208
2006-09-30	208
2006-12-31	179
2007-03-31	188
2007-06-30	256
2007-09-30	244
2007-12-31	122
2008-03-31	93
2008-06-30	89
2008-09-30	33
2008-12-31	4
2009-03-31	5
2009-06-30	6
2009-09-30	6
2009-12-31	6
2010-03-31	5
2010-06-30	10
2010-09-30	16
2010-12-31	7
2011-03-31	15
2011-06-30	158
2011-09-30	82
2011-12-31	70
2012-03-31	81
2012-06-30	159
2012-09-30	63
2012-12-31	22
2013-03-31	11
2013-06-30	11
2013-09-30	19
2013-12-31	92
2014-03-31	97
2014-06-30	74
2014-09-30	77
2014-12-31	78
2015-03-31	13
2015-06-30	12
2015-09-30	10
2015-12-31	10
2016-03-31	24
2016-06-30	9
2016-09-30	8
2016-12-31	8
2017-03-31	10
2017-06-30	12
2017-09-30	32
2017-12-31	126
2018-03-31	89
2018-06-30	86
2018-09-30	73
2018-12-31	4
2019-03-31	68
2019-06-30	62
2019-09-30	3
2019-12-31	3
2020-03-31	9
2020-06-30	45
2020-09-30	77
2020-12-31	4
2021-03-31	52
2021-06-30	53
2021-09-30	19
2021-12-31	22
2022-03-31	27
2022-06-30	20
2022-09-30	15
2022-12-31	27
2023-03-31	15
2023-06-30	15
2023-09-30	19