Quarterly 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