Quarterly US dollars
1986-09-30 46
1986-12-31 44
1987-03-31 52
1987-06-30 65
1987-09-30 52
1987-12-31 60
1988-03-31 59
1988-06-30 50
1988-09-30 82
1988-12-31 186
1989-03-31 81
1989-06-30 72
1989-09-30 66
1989-12-31 71
1990-03-31 81
1990-06-30 90
1990-09-30 100
1990-12-31 102
1991-03-31 111
1991-06-30 102
1991-09-30 108
1991-12-31 111
1992-03-31 115
1992-06-30 155
1992-09-30 127
1992-12-31 94
1993-03-31 93
1993-06-30 94
1993-09-30 86
1993-12-31 89
1994-03-31 96
1994-06-30 96
1994-09-30 158
1994-12-31 114
1995-03-31 114
1995-06-30 107
1995-09-30 112
1995-12-31 115
1996-03-31 122
1996-06-30 190
1996-09-30 242
1996-12-31 240
1997-03-31 273
1997-06-30 228
1997-09-30 238
1997-12-31 200
1998-03-31 186
1998-06-30 204
1998-09-30 216
1998-12-31 212
1999-03-31 230
1999-06-30 224
1999-09-30 177
1999-12-31 161
2000-03-31 263
2000-06-30 276
2000-09-30 297
2000-12-31 295
2001-03-31 333
2001-06-30 376
2001-09-30 383
2001-12-31 347
2002-03-31 393
2002-06-30 419
2002-09-30 389
2002-12-31 350
2003-03-31 342
2003-06-30 352
2003-09-30 336
2003-12-31 301
2004-03-31 457
2004-06-30 370
2004-09-30 436
2004-12-31 556
2005-03-31 505
2005-06-30 473
2005-09-30 429
2005-12-31 400
2006-03-31 421
2006-06-30 381
2006-09-30 412
2006-12-31 394
2007-03-31 403
2007-06-30 421
2007-09-30 348
2007-12-31 390
2008-03-31 350
2008-06-30 421
2008-09-30 462
2008-12-31 284
2009-03-31 261
2009-06-30 372
2009-09-30 299
2009-12-31 299
2010-03-31 387
2010-06-30 378
2010-09-30 471
2010-12-31 500
2011-03-31 492
2011-06-30 544
2011-09-30 519
2011-12-31 353
2012-03-31 224
2012-06-30 193
2012-09-30 236
2012-12-31 235
2013-03-31 211
2013-06-30 171
2013-09-30 217
2013-12-31 218
2014-03-31 204
2014-06-30 189
2014-09-30 171
2014-12-31 239
2015-03-31 178
2015-06-30 205
2015-09-30 207
2015-12-31 221
2016-03-31 173
2016-06-30 169
2016-09-30 197
2016-12-31 163
2017-03-31 141
2017-06-30 213
2017-09-30 239
2017-12-31 230
2018-03-31 315
2018-06-30 271
2018-09-30 316
2018-12-31 301
2019-03-31 310
2019-06-30 285
2019-09-30 341
2019-12-31 325
2020-03-31 331
2020-06-30 367
2020-09-30 459
2020-12-31 506
2021-03-31 481
2021-06-30 512
2021-09-30 521
2021-12-31 230
2022-03-31 385
2022-06-30 451
2022-09-30 283
2022-12-31 231
2023-03-31 343
2023-06-30 304
2023-09-30 373