Quarter	US dollars
1986-09-30	57
1986-12-31	48
1987-03-31	37
1987-06-30	34
1987-09-30	44
1987-12-31	67
1988-03-31	42
1988-06-30	48
1988-09-30	48
1988-12-31	47
1989-03-31	60
1989-06-30	57
1989-09-30	56
1989-12-31	64
1990-03-31	50
1990-06-30	74
1990-09-30	108
1990-12-31	82
1991-03-31	90
1991-06-30	75
1991-09-30	93
1991-12-31	83
1992-03-31	85
1992-06-30	361
1992-09-30	141
1992-12-31	223
1993-03-31	159
1993-06-30	138
1993-09-30	67
1993-12-31	113
1994-03-31	100
1994-06-30	44
1994-09-30	60
1994-12-31	81
1995-03-31	73
1995-06-30	122
1995-09-30	168
1995-12-31	178
1996-03-31	450
1996-06-30	209
1996-09-30	169
1996-12-31	173
1997-03-31	125
1997-06-30	166
1997-09-30	119
1997-12-31	107
1998-03-31	112
1998-06-30	99
1998-09-30	79
1998-12-31	97
1999-03-31	85
1999-06-30	97
1999-09-30	134
1999-12-31	148
2000-03-31	125
2000-06-30	145
2000-09-30	272
2000-12-31	229
2001-03-31	397
2001-06-30	495
2001-09-30	505
2001-12-31	451
2002-03-31	429
2002-06-30	775
2002-09-30	425
2002-12-31	199
2003-03-31	178
2003-06-30	191
2003-09-30	200
2003-12-31	152
2004-03-31	137
2004-06-30	175
2004-09-30	438
2004-12-31	746
2005-03-31	718
2005-06-30	919
2005-09-30	1413
2005-12-31	1468
2006-03-31	1544
2006-06-30	1915
2006-09-30	2104
2006-12-31	2740
2007-03-31	3194
2007-06-30	3645
2007-09-30	4441
2007-12-31	5166
2008-03-31	5983
2008-06-30	9122
2008-09-30	11887
2008-12-31	9630
2009-03-31	6270
2009-06-30	5931
2009-09-30	5443
2009-12-31	5668
2010-03-31	4506
2010-06-30	4512
2010-09-30	4894
2010-12-31	5810
2011-03-31	6780
2011-06-30	8928
2011-09-30	10356
2011-12-31	6634
2012-03-31	10820
2012-06-30	11478
2012-09-30	10749
2012-12-31	10881
2013-03-31	11774
2013-06-30	11296
2013-09-30	9190
2013-12-31	7395
2014-03-31	8944
2014-06-30	10205
2014-09-30	7437
2014-12-31	8991
2015-03-31	9205
2015-06-30	8220
2015-09-30	8527
2015-12-31	7142
2016-03-31	7295
2016-06-30	7762
2016-09-30	6672
2016-12-31	7069
2017-03-31	7785
2017-06-30	7032
2017-09-30	8327
2017-12-31	5845
2018-03-31	6846
2018-06-30	6783
2018-09-30	6116
2018-12-31	7071
2019-03-31	6153
2019-06-30	6088
2019-09-30	6441
2019-12-31	6996
2020-03-31	6660
2020-06-30	7045
2020-09-30	7125
2020-12-31	7075
2021-03-31	4719
2021-06-30	4320
2021-09-30	7726
2021-12-31	7460
2022-03-31	8392
2022-06-30	9097
2022-09-30	9601
2022-12-31	8742
2023-03-31	8415
2023-06-30	8030
2023-09-30	7848