Quarter	US dollars
1986-09-30	26
1986-12-31	23
1987-03-31	26
1987-06-30	25
1987-09-30	24
1987-12-31	29
1988-03-31	30
1988-06-30	28
1988-09-30	27
1988-12-31	23
1989-03-31	18
1989-06-30	17
1989-09-30	21
1989-12-31	16
1990-03-31	17
1990-06-30	12
1990-09-30	6
1990-12-31	7
1991-03-31	7
1991-06-30	7
1991-09-30	12
1991-12-31	7
1992-03-31	6
1992-06-30	6
1992-09-30	6
1992-12-31	6
1993-03-31	5
1993-06-30	7
1993-09-30	5
1993-12-31	15
1994-03-31	23
1994-06-30	27
1994-09-30	20
1994-12-31	14
1995-03-31	8
1995-06-30	12
1995-09-30	21
1995-12-31	22
1996-03-31	30
1996-06-30	22
1996-09-30	27
1996-12-31	19
1997-03-31	11
1997-06-30	8
1997-09-30	68
1997-12-31	10
1998-03-31	11
1998-06-30	36
1998-09-30	54
1998-12-31	16
1999-03-31	47
1999-06-30	18
1999-09-30	11
1999-12-31	11
2000-03-31	22
2000-06-30	23
2000-09-30	25
2000-12-31	11
2001-03-31	11
2001-06-30	11
2001-09-30	19
2001-12-31	20
2002-03-31	10
2002-06-30	9
2002-09-30	39
2002-12-31	45
2003-03-31	134
2003-06-30	49
2003-09-30	68
2003-12-31	95
2004-03-31	67
2004-06-30	80
2004-09-30	95
2004-12-31	125
2005-03-31	136
2005-06-30	110
2005-09-30	94
2005-12-31	133
2006-03-31	190
2006-06-30	240
2006-09-30	220
2006-12-31	181
2007-03-31	98
2007-06-30	102
2007-09-30	110
2007-12-31	107
2008-03-31	159
2008-06-30	12
2008-09-30	12
2008-12-31	16
2009-03-31	13
2009-06-30	24
2009-09-30	20
2009-12-31	26
2010-03-31	51
2010-06-30	35
2010-09-30	50
2010-12-31	80
2011-03-31	60
2011-06-30	32
2011-09-30	114
2011-12-31	115
2012-03-31	154
2012-06-30	172
2012-09-30	160
2012-12-31	169
2013-03-31	179
2013-06-30	176
2013-09-30	159
2013-12-31	170
2014-03-31	202
2014-06-30	210
2014-09-30	254
2014-12-31	264
2015-03-31	265
2015-06-30	252
2015-09-30	314
2015-12-31	293
2016-03-31	247
2016-06-30	256
2016-09-30	232
2016-12-31	229
2017-03-31	218
2017-06-30	226
2017-09-30	108
2017-12-31	111
2018-03-31	98
2018-06-30	79
2018-09-30	76
2018-12-31	111
2019-03-31	118
2019-06-30	160
2019-09-30	144
2019-12-31	127
2020-03-31	133
2020-06-30	115
2020-09-30	135
2020-12-31	146
2021-03-31	149
2021-06-30	183
2021-09-30	163
2021-12-31	144
2022-03-31	156
2022-06-30	147
2022-09-30	150
2022-12-31	294
2023-03-31	303
2023-06-30	310
2023-09-30	230