Quarter	US dollars
1986-09-30	71
1986-12-31	65
1987-03-31	70
1987-06-30	75
1987-09-30	57
1987-12-31	56
1988-03-31	63
1988-06-30	49
1988-09-30	53
1988-12-31	48
1989-03-31	36
1989-06-30	47
1989-09-30	58
1989-12-31	57
1990-03-31	56
1990-06-30	62
1990-09-30	93
1990-12-31	57
1991-03-31	61
1991-06-30	53
1991-09-30	50
1991-12-31	54
1992-03-31	55
1992-06-30	57
1992-09-30	53
1992-12-31	49
1993-03-31	43
1993-06-30	34
1993-09-30	31
1993-12-31	49
1994-03-31	47
1994-06-30	49
1994-09-30	48
1994-12-31	52
1995-03-31	60
1995-06-30	80
1995-09-30	46
1995-12-31	70
1996-03-31	60
1996-06-30	45
1996-09-30	85
1996-12-31	83
1997-03-31	72
1997-06-30	85
1997-09-30	112
1997-12-31	77
1998-03-31	64
1998-06-30	43
1998-09-30	43
1998-12-31	93
1999-03-31	38
1999-06-30	51
1999-09-30	46
1999-12-31	42
2000-03-31	64
2000-06-30	82
2000-09-30	65
2000-12-31	88
2001-03-31	93
2001-06-30	102
2001-09-30	124
2001-12-31	129
2002-03-31	164
2002-06-30	191
2002-09-30	156
2002-12-31	134
2003-03-31	81
2003-06-30	54
2003-09-30	81
2003-12-31	102
2004-03-31	103
2004-06-30	90
2004-09-30	109
2004-12-31	116
2005-03-31	131
2005-06-30	136
2005-09-30	107
2005-12-31	107
2006-03-31	122
2006-06-30	212
2006-09-30	156
2006-12-31	232
2007-03-31	240
2007-06-30	285
2007-09-30	349
2007-12-31	275
2008-03-31	269
2008-06-30	280
2008-09-30	366
2008-12-31	267
2009-03-31	236
2009-06-30	260
2009-09-30	298
2009-12-31	300
2010-03-31	306
2010-06-30	286
2010-09-30	288
2010-12-31	291
2011-03-31	336
2011-06-30	634
2011-09-30	369
2011-12-31	317
2012-03-31	332
2012-06-30	313
2012-09-30	265
2012-12-31	240
2013-03-31	269
2013-06-30	309
2013-09-30	360
2013-12-31	291
2014-03-31	365
2014-06-30	285
2014-09-30	245
2014-12-31	235
2015-03-31	229
2015-06-30	228
2015-09-30	246
2015-12-31	244
2016-03-31	216
2016-06-30	234
2016-09-30	143
2016-12-31	154
2017-03-31	160
2017-06-30	155
2017-09-30	158
2017-12-31	114
2018-03-31	106
2018-06-30	131
2018-09-30	150
2018-12-31	152
2019-03-31	128
2019-06-30	91
2019-09-30	144
2019-12-31	174
2020-03-31	162
2020-06-30	165
2020-09-30	145
2020-12-31	172
2021-03-31	161
2021-06-30	175
2021-09-30	164
2021-12-31	146
2022-03-31	132
2022-06-30	126
2022-09-30	142
2022-12-31	132
2023-03-31	165
2023-06-30	161
2023-09-30	73