Quarter	US dollars
1986-09-30	24
1986-12-31	31
1987-03-31	22
1987-06-30	30
1987-09-30	18
1987-12-31	22
1988-03-31	25
1988-06-30	28
1988-09-30	17
1988-12-31	17
1989-03-31	17
1989-06-30	19
1989-09-30	21
1989-12-31	19
1990-03-31	29
1990-06-30	25
1990-09-30	25
1990-12-31	18
1991-03-31	14
1991-06-30	14
1991-09-30	10
1991-12-31	14
1992-03-31	10
1992-06-30	16
1992-09-30	15
1992-12-31	16
1993-03-31	16
1993-06-30	9
1993-09-30	9
1993-12-31	20
1994-03-31	19
1994-06-30	21
1994-09-30	20
1994-12-31	18
1995-03-31	15
1995-06-30	22
1995-09-30	22
1995-12-31	18
1996-03-31	25
1996-06-30	23
1996-09-30	47
1996-12-31	31
1997-03-31	14
1997-06-30	16
1997-09-30	20
1997-12-31	25
1998-03-31	21
1998-06-30	29
1998-09-30	25
1998-12-31	32
1999-03-31	32
1999-06-30	35
1999-09-30	38
1999-12-31	37
2000-03-31	40
2000-06-30	60
2000-09-30	58
2000-12-31	64
2001-03-31	75
2001-06-30	65
2001-09-30	64
2001-12-31	65
2002-03-31	50
2002-06-30	53
2002-09-30	49
2002-12-31	51
2003-03-31	54
2003-06-30	77
2003-09-30	66
2003-12-31	65
2004-03-31	44
2004-06-30	40
2004-09-30	37
2004-12-31	31
2005-03-31	35
2005-06-30	42
2005-09-30	36
2005-12-31	34
2006-03-31	36
2006-06-30	40
2006-09-30	41
2006-12-31	50
2007-03-31	44
2007-06-30	92
2007-09-30	97
2007-12-31	118
2008-03-31	99
2008-06-30	110
2008-09-30	242
2008-12-31	137
2009-03-31	93
2009-06-30	124
2009-09-30	111
2009-12-31	133
2010-03-31	102
2010-06-30	187
2010-09-30	222
2010-12-31	202
2011-03-31	179
2011-06-30	231
2011-09-30	231
2011-12-31	325
2012-03-31	384
2012-06-30	391
2012-09-30	340
2012-12-31	340
2013-03-31	402
2013-06-30	388
2013-09-30	389
2013-12-31	402
2014-03-31	417
2014-06-30	454
2014-09-30	452
2014-12-31	419
2015-03-31	405
2015-06-30	374
2015-09-30	348
2015-12-31	326
2016-03-31	305
2016-06-30	339
2016-09-30	324
2016-12-31	318
2017-03-31	336
2017-06-30	370
2017-09-30	303
2017-12-31	230
2018-03-31	278
2018-06-30	331
2018-09-30	300
2018-12-31	297
2019-03-31	294
2019-06-30	335
2019-09-30	329
2019-12-31	313
2020-03-31	311
2020-06-30	374
2020-09-30	419
2020-12-31	490
2021-03-31	500
2021-06-30	528
2021-09-30	567
2021-12-31	475
2022-03-31	516
2022-06-30	362
2022-09-30	365
2022-12-31	332
2023-03-31	336
2023-06-30	307
2023-09-30	295