Quarter	US dollars
1986-09-30	267
1986-12-31	269
1987-03-31	316
1987-06-30	319
1987-09-30	307
1987-12-31	376
1988-03-31	364
1988-06-30	335
1988-09-30	302
1988-12-31	344
1989-03-31	300
1989-06-30	279
1989-09-30	277
1989-12-31	313
1990-03-31	289
1990-06-30	230
1990-09-30	251
1990-12-31	270
1991-03-31	228
1991-06-30	224
1991-09-30	233
1991-12-31	224
1992-03-31	199
1992-06-30	197
1992-09-30	204
1992-12-31	153
1993-03-31	138
1993-06-30	124
1993-09-30	129
1993-12-31	100
1994-03-31	113
1994-06-30	103
1994-09-30	101
1994-12-31	101
1995-03-31	127
1995-06-30	117
1995-09-30	117
1995-12-31	173
1996-03-31	120
1996-06-30	110
1996-09-30	107
1996-12-31	115
1997-03-31	101
1997-06-30	117
1997-09-30	104
1997-12-31	151
1998-03-31	160
1998-06-30	142
1998-09-30	148
1998-12-31	143
1999-03-31	106
1999-06-30	78
1999-09-30	79
1999-12-31	79
2000-03-31	101
2000-06-30	101
2000-09-30	84
2000-12-31	90
2001-03-31	93
2001-06-30	82
2001-09-30	88
2001-12-31	93
2002-03-31	87
2002-06-30	92
2002-09-30	93
2002-12-31	99
2003-03-31	99
2003-06-30	95
2003-09-30	95
2003-12-31	94
2004-03-31	96
2004-06-30	99
2004-09-30	108
2004-12-31	104
2005-03-31	96
2005-06-30	77
2005-09-30	101
2005-12-31	140
2006-03-31	227
2006-06-30	228
2006-09-30	247
2006-12-31	200
2007-03-31	164
2007-06-30	160
2007-09-30	194
2007-12-31	180
2008-03-31	199
2008-06-30	177
2008-09-30	148
2008-12-31	143
2009-03-31	129
2009-06-30	123
2009-09-30	123
2009-12-31	122
2010-03-31	111
2010-06-30	98
2010-09-30	107
2010-12-31	99
2011-03-31	135
2011-06-30	113
2011-09-30	93
2011-12-31	96
2012-03-31	84
2012-06-30	57
2012-09-30	64
2012-12-31	44
2013-03-31	36
2013-06-30	17
2013-09-30	12
2013-12-31	6
2014-03-31	7
2014-06-30	2
2014-09-30	2
2014-12-31	2
2015-03-31	2
2015-06-30	10
2015-09-30	10
2015-12-31	9
2016-03-31	10
2016-06-30	9
2016-09-30	9
2016-12-31	9
2017-03-31	9
2017-06-30	10
2017-09-30	10
2017-12-31	10
2018-03-31	9
2018-06-30	9
2018-09-30	9
2018-12-31	9
2019-03-31	9
2019-06-30	10
2019-09-30	12
2019-12-31	9
2020-03-31	20
2020-06-30	20
2020-09-30	10
2020-12-31	10
2021-03-31	10
2021-06-30	8
2021-09-30	8
2021-12-31	8
2022-03-31	8
2022-06-30	7
2022-09-30	7
2022-12-31	8
2023-03-31	8
2023-06-30	8
2023-09-30	8