Quarter	US dollars
1986-09-30	149
1986-12-31	97
1987-03-31	74
1987-06-30	72
1987-09-30	82
1987-12-31	65
1988-03-31	76
1988-06-30	81
1988-09-30	53
1988-12-31	58
1989-03-31	70
1989-06-30	88
1989-09-30	83
1989-12-31	84
1990-03-31	68
1990-06-30	70
1990-09-30	75
1990-12-31	64
1991-03-31	71
1991-06-30	100
1991-09-30	86
1991-12-31	92
1992-03-31	102
1992-06-30	105
1992-09-30	119
1992-12-31	158
1993-03-31	163
1993-06-30	162
1993-09-30	184
1993-12-31	172
1994-03-31	193
1994-06-30	271
1994-09-30	378
1994-12-31	451
1995-03-31	316
1995-06-30	470
1995-09-30	624
1995-12-31	381
1996-03-31	381
1996-06-30	484
1996-09-30	411
1996-12-31	475
1997-03-31	396
1997-06-30	350
1997-09-30	396
1997-12-31	451
1998-03-31	469
1998-06-30	252
1998-09-30	277
1998-12-31	191
1999-03-31	174
1999-06-30	164
1999-09-30	178
1999-12-31	112
2000-03-31	112
2000-06-30	144
2000-09-30	213
2000-12-31	187
2001-03-31	177
2001-06-30	189
2001-09-30	180
2001-12-31	171
2002-03-31	187
2002-06-30	286
2002-09-30	237
2002-12-31	161
2003-03-31	413
2003-06-30	253
2003-09-30	377
2003-12-31	458
2004-03-31	518
2004-06-30	316
2004-09-30	430
2004-12-31	476
2005-03-31	369
2005-06-30	329
2005-09-30	379
2005-12-31	336
2006-03-31	166
2006-06-30	125
2006-09-30	129
2006-12-31	82
2007-03-31	106
2007-06-30	101
2007-09-30	88
2007-12-31	84
2008-03-31	175
2008-06-30	82
2008-09-30	72
2008-12-31	55
2009-03-31	54
2009-06-30	50
2009-09-30	72
2009-12-31	74
2010-03-31	81
2010-06-30	55
2010-09-30	51
2010-12-31	107
2011-03-31	61
2011-06-30	80
2011-09-30	104
2011-12-31	116
2012-03-31	98
2012-06-30	87
2012-09-30	85
2012-12-31	99
2013-03-31	66
2013-06-30	63
2013-09-30	66
2013-12-31	50
2014-03-31	83
2014-06-30	92
2014-09-30	92
2014-12-31	80
2015-03-31	87
2015-06-30	131
2015-09-30	122
2015-12-31	162
2016-03-31	133
2016-06-30	126
2016-09-30	128
2016-12-31	141
2017-03-31	197
2017-06-30	165
2017-09-30	194
2017-12-31	218
2018-03-31	243
2018-06-30	180
2018-09-30	124
2018-12-31	204
2019-03-31	134
2019-06-30	106
2019-09-30	170
2019-12-31	177
2020-03-31	205
2020-06-30	339
2020-09-30	189
2020-12-31	279
2021-03-31	396
2021-06-30	653
2021-09-30	1007
2021-12-31	1070
2022-03-31	684
2022-06-30	740
2022-09-30	784
2022-12-31	778
2023-03-31	938
2023-06-30	752
2023-09-30	685