Quarterly US dollars
1986-09-30 518
1986-12-31 494
1987-03-31 544
1987-06-30 415
1987-09-30 446
1987-12-31 378
1988-03-31 255
1988-06-30 457
1988-09-30 351
1988-12-31 330
1989-03-31 380
1989-06-30 319
1989-09-30 404
1989-12-31 430
1990-03-31 389
1990-06-30 351
1990-09-30 470
1990-12-31 492
1991-03-31 460
1991-06-30 349
1991-09-30 434
1991-12-31 634
1992-03-31 495
1992-06-30 579
1992-09-30 511
1992-12-31 489
1993-03-31 345
1993-06-30 283
1993-09-30 341
1993-12-31 384
1994-03-31 347
1994-06-30 449
1994-09-30 449
1994-12-31 556
1995-03-31 407
1995-06-30 443
1995-09-30 367
1995-12-31 370
1996-03-31 564
1996-06-30 392
1996-09-30 343
1996-12-31 370
1997-03-31 358
1997-06-30 346
1997-09-30 366
1997-12-31 447
1998-03-31 552
1998-06-30 495
1998-09-30 606
1998-12-31 390
1999-03-31 396
1999-06-30 285
1999-09-30 336
1999-12-31 512
2000-03-31 605
2000-06-30 681
2000-09-30 431
2000-12-31 661
2001-03-31 816
2001-06-30 843
2001-09-30 990
2001-12-31 1212
2002-03-31 1262
2002-06-30 1242
2002-09-30 1444
2002-12-31 1359
2003-03-31 1257
2003-06-30 1123
2003-09-30 1547
2003-12-31 1615
2004-03-31 1573
2004-06-30 1506
2004-09-30 1583
2004-12-31 1743
2005-03-31 1559
2005-06-30 1547
2005-09-30 1521
2005-12-31 1813
2006-03-31 2132
2006-06-30 2736
2006-09-30 3590
2006-12-31 3364
2007-03-31 3559
2007-06-30 3404
2007-09-30 4023
2007-12-31 4382
2008-03-31 3839
2008-06-30 3771
2008-09-30 4382
2008-12-31 1969
2009-03-31 499
2009-06-30 505
2009-09-30 1180
2009-12-31 1790
2010-03-31 1633
2010-06-30 1822
2010-09-30 2111
2010-12-31 2120
2011-03-31 2893
2011-06-30 3328
2011-09-30 1596
2011-12-31 1396
2012-03-31 1592
2012-06-30 1289
2012-09-30 449
2012-12-31 273
2013-03-31 366
2013-06-30 252
2013-09-30 289
2013-12-31 395
2014-03-31 370
2014-06-30 326
2014-09-30 446
2014-12-31 358
2015-03-31 371
2015-06-30 461
2015-09-30 268
2015-12-31 274
2016-03-31 320
2016-06-30 208
2016-09-30 272
2016-12-31 302
2017-03-31 293
2017-06-30 253
2017-09-30 165
2017-12-31 109
2018-03-31 297
2018-06-30 1758
2018-09-30 1690
2018-12-31 1625
2019-03-31 225
2019-06-30 74
2019-09-30 371
2019-12-31 359
2020-03-31 196
2020-06-30 261
2020-09-30 427
2020-12-31 454
2021-03-31 141
2021-06-30 176
2021-09-30 36
2021-12-31 49
2022-03-31 84
2022-06-30 49
2022-09-30 105
2022-12-31 36
2023-03-31 51
2023-06-30 41
2023-09-30 36