Quarter	US dollars
1986-09-30	65
1986-12-31	54
1987-03-31	46
1987-06-30	46
1987-09-30	42
1987-12-31	38
1988-03-31	42
1988-06-30	40
1988-09-30	40
1988-12-31	37
1989-03-31	36
1989-06-30	35
1989-09-30	39
1989-12-31	31
1990-03-31	27
1990-06-30	35
1990-09-30	39
1990-12-31	35
1991-03-31	30
1991-06-30	31
1991-09-30	45
1991-12-31	35
1992-03-31	32
1992-06-30	57
1992-09-30	47
1992-12-31	44
1993-03-31	38
1993-06-30	26
1993-09-30	17
1993-12-31	17
1994-03-31	15
1994-06-30	16
1994-09-30	15
1994-12-31	13
1995-03-31	10
1995-06-30	9
1995-09-30	9
1995-12-31	8
1996-03-31	9
1996-06-30	9
1996-09-30	12
1996-12-31	16
1997-03-31	14
1997-06-30	26
1997-09-30	29
1997-12-31	21
1998-03-31	40
1998-06-30	50
1998-09-30	58
1998-12-31	56
1999-03-31	25
1999-06-30	34
1999-09-30	29
1999-12-31	28
2000-03-31	31
2000-06-30	36
2000-09-30	21
2000-12-31	38
2001-03-31	27
2001-06-30	7
2001-09-30	9
2001-12-31	8
2002-03-31	8
2002-06-30	9
2002-09-30	9
2002-12-31	29
2003-03-31	28
2003-06-30	9
2003-09-30	8
2003-12-31	12
2004-03-31	8
2004-06-30	7
2004-09-30	8
2004-12-31	7
2005-03-31	7
2005-06-30	8
2005-09-30	7
2005-12-31	7
2006-03-31	8
2006-06-30	7
2006-09-30	43
2006-12-31	55
2007-03-31	29
2007-06-30	44
2007-09-30	69
2007-12-31	45
2008-03-31	33
2008-06-30	63
2008-09-30	54
2008-12-31	48
2009-03-31	8
2009-06-30	15
2009-09-30	33
2009-12-31	31
2010-03-31	9
2010-06-30	29
2010-09-30	26
2010-12-31	21
2011-03-31	14
2011-06-30	13
2011-09-30	25
2011-12-31	26
2012-03-31	12
2012-06-30	10
2012-09-30	11
2012-12-31	33
2013-03-31	12
2013-06-30	9
2013-09-30	24
2013-12-31	28
2014-03-31	21
2014-06-30	11
2014-09-30	12
2014-12-31	12
2015-03-31	12
2015-06-30	14
2015-09-30	12
2015-12-31	10
2016-03-31	10
2016-06-30	9
2016-09-30	9
2016-12-31	9
2017-03-31	8
2017-06-30	13
2017-09-30	20
2017-12-31	21
2018-03-31	202
2018-06-30	198
2018-09-30	183
2018-12-31	190
2019-03-31	179
2019-06-30	184
2019-09-30	189
2019-12-31	185
2020-03-31	255
2020-06-30	309
2020-09-30	240
2020-12-31	245
2021-03-31	241
2021-06-30	134
2021-09-30	129
2021-12-31	135
2022-03-31	117
2022-06-30	91
2022-09-30	103
2022-12-31	61
2023-03-31	45
2023-06-30	15
2023-09-30	18