Quarter	US dollars
1986-09-30	47
1986-12-31	155
1987-03-31	83
1987-06-30	80
1987-09-30	76
1987-12-31	93
1988-03-31	84
1988-06-30	75
1988-09-30	77
1988-12-31	92
1989-03-31	86
1989-06-30	117
1989-09-30	138
1989-12-31	148
1990-03-31	129
1990-06-30	148
1990-09-30	90
1990-12-31	92
1991-03-31	94
1991-06-30	87
1991-09-30	94
1991-12-31	100
1992-03-31	93
1992-06-30	97
1992-09-30	132
1992-12-31	111
1993-03-31	107
1993-06-30	91
1993-09-30	101
1993-12-31	65
1994-03-31	94
1994-06-30	70
1994-09-30	68
1994-12-31	68
1995-03-31	53
1995-06-30	47
1995-09-30	95
1995-12-31	103
1996-03-31	113
1996-06-30	121
1996-09-30	127
1996-12-31	114
1997-03-31	108
1997-06-30	275
1997-09-30	96
1997-12-31	1479
1998-03-31	3285
1998-06-30	1391
1998-09-30	562
1998-12-31	111
1999-03-31	294
1999-06-30	57
1999-09-30	213
1999-12-31	55
2000-03-31	59
2000-06-30	67
2000-09-30	68
2000-12-31	76
2001-03-31	201
2001-06-30	272
2001-09-30	330
2001-12-31	492
2002-03-31	491
2002-06-30	466
2002-09-30	470
2002-12-31	624
2003-03-31	510
2003-06-30	463
2003-09-30	158
2003-12-31	151
2004-03-31	115
2004-06-30	133
2004-09-30	161
2004-12-31	178
2005-03-31	687
2005-06-30	786
2005-09-30	286
2005-12-31	485
2006-03-31	603
2006-06-30	356
2006-09-30	199
2006-12-31	220
2007-03-31	200
2007-06-30	172
2007-09-30	822
2007-12-31	791
2008-03-31	763
2008-06-30	544
2008-09-30	519
2008-12-31	433
2009-03-31	491
2009-06-30	418
2009-09-30	428
2009-12-31	480
2010-03-31	454
2010-06-30	461
2010-09-30	459
2010-12-31	446
2011-03-31	456
2011-06-30	513
2011-09-30	498
2011-12-31	352
2012-03-31	494
2012-06-30	597
2012-09-30	620
2012-12-31	678
2013-03-31	563
2013-06-30	630
2013-09-30	572
2013-12-31	520
2014-03-31	421
2014-06-30	527
2014-09-30	410
2014-12-31	497
2015-03-31	493
2015-06-30	466
2015-09-30	650
2015-12-31	485
2016-03-31	468
2016-06-30	743
2016-09-30	517
2016-12-31	542
2017-03-31	557
2017-06-30	507
2017-09-30	324
2017-12-31	268
2018-03-31	104
2018-06-30	217
2018-09-30	358
2018-12-31	352
2019-03-31	110
2019-06-30	348
2019-09-30	411
2019-12-31	490
2020-03-31	492
2020-06-30	606
2020-09-30	624
2020-12-31	926
2021-03-31	655
2021-06-30	648
2021-09-30	671
2021-12-31	505
2022-03-31	419
2022-06-30	397
2022-09-30	379
2022-12-31	446
2023-03-31	372
2023-06-30	371
2023-09-30	864