Quarterly US dollars
1992-03-31 30
1992-06-30 4
1992-09-30 4
1992-12-31 9
1993-03-31 5
1993-06-30 20
1993-09-30 18
1993-12-31 15
1994-03-31 86
1994-06-30 131
1994-09-30 76
1994-12-31 33
1995-03-31 26
1995-06-30 47
1995-09-30 49
1995-12-31 71
1996-03-31 75
1996-06-30 88
1996-09-30 73
1996-12-31 69
1997-03-31 78
1997-06-30 87
1997-09-30 78
1997-12-31 96
1998-03-31 82
1998-06-30 119
1998-09-30 108
1998-12-31 75
1999-03-31 136
1999-06-30 143
1999-09-30 151
1999-12-31 175
2000-03-31 234
2000-06-30 342
2000-09-30 271
2000-12-31 281
2001-03-31 243
2001-06-30 215
2001-09-30 193
2001-12-31 199
2002-03-31 279
2002-06-30 267
2002-09-30 456
2002-12-31 395
2003-03-31 525
2003-06-30 512
2003-09-30 436
2003-12-31 340
2004-03-31 441
2004-06-30 399
2004-09-30 595
2004-12-31 509
2005-03-31 681
2005-06-30 414
2005-09-30 418
2005-12-31 316
2006-03-31 443
2006-06-30 456
2006-09-30 324
2006-12-31 392
2007-03-31 635
2007-06-30 376
2007-09-30 442
2007-12-31 885
2008-03-31 800
2008-06-30 582
2008-09-30 443
2008-12-31 248
2009-03-31 295
2009-06-30 245
2009-09-30 598
2009-12-31 402
2010-03-31 468
2010-06-30 533
2010-09-30 520
2010-12-31 573
2011-03-31 806
2011-06-30 624
2011-09-30 862
2011-12-31 400
2012-03-31 748
2012-06-30 881
2012-09-30 399
2012-12-31 486
2013-03-31 332
2013-06-30 412
2013-09-30 469
2013-12-31 769
2014-03-31 658
2014-06-30 1132
2014-09-30 1056
2014-12-31 836
2015-03-31 412
2015-06-30 344
2015-09-30 492
2015-12-31 483
2016-03-31 373
2016-06-30 528
2016-09-30 1148
2016-12-31 502
2017-03-31 497
2017-06-30 592
2017-09-30 511
2017-12-31 356
2018-03-31 159
2018-06-30 561
2018-09-30 1192
2018-12-31 303
2019-03-31 1147
2019-06-30 439
2019-09-30 358
2019-12-31 345
2020-03-31 195
2020-06-30 198
2020-09-30 323
2020-12-31 197
2021-03-31 214
2021-06-30 274
2021-09-30 275
2021-12-31 269
2022-03-31 271
2022-06-30 291
2022-09-30 571
2022-12-31 392
2023-03-31 374
2023-06-30 280
2023-09-30 281