Quarterly US dollars
1986-09-30 151
1986-12-31 155
1987-03-31 184
1987-06-30 192
1987-09-30 197
1987-12-31 223
1988-03-31 251
1988-06-30 219
1988-09-30 246
1988-12-31 213
1989-03-31 196
1989-06-30 204
1989-09-30 234
1989-12-31 282
1990-03-31 263
1990-06-30 276
1990-09-30 296
1990-12-31 376
1991-03-31 347
1991-06-30 333
1991-09-30 366
1991-12-31 405
1992-03-31 367
1992-06-30 356
1992-09-30 408
1992-12-31 341
1993-03-31 372
1993-06-30 343
1993-09-30 421
1993-12-31 335
1994-03-31 300
1994-06-30 306
1994-09-30 325
1994-12-31 362
1995-03-31 466
1995-06-30 482
1995-09-30 416
1995-12-31 426
1996-03-31 415
1996-06-30 435
1996-09-30 493
1996-12-31 473
1997-03-31 539
1997-06-30 539
1997-09-30 678
1997-12-31 695
1998-03-31 679
1998-06-30 568
1998-09-30 717
1998-12-31 656
1999-03-31 519
1999-06-30 480
1999-09-30 572
1999-12-31 445
2000-03-31 506
2000-06-30 472
2000-09-30 499
2000-12-31 497
2001-03-31 562
2001-06-30 410
2001-09-30 635
2001-12-31 449
2002-03-31 439
2002-06-30 485
2002-09-30 641
2002-12-31 564
2003-03-31 457
2003-06-30 518
2003-09-30 590
2003-12-31 778
2004-03-31 1007
2004-06-30 837
2004-09-30 890
2004-12-31 826
2005-03-31 977
2005-06-30 1077
2005-09-30 1051
2005-12-31 1076
2006-03-31 1019
2006-06-30 958
2006-09-30 849
2006-12-31 766
2007-03-31 917
2007-06-30 971
2007-09-30 481
2007-12-31 965
2008-03-31 1030
2008-06-30 969
2008-09-30 664
2008-12-31 263
2009-03-31 396
2009-06-30 274
2009-09-30 276
2009-12-31 411
2010-03-31 470
2010-06-30 520
2010-09-30 400
2010-12-31 362
2011-03-31 382
2011-06-30 528
2011-09-30 436
2011-12-31 346
2012-03-31 244
2012-06-30 540
2012-09-30 610
2012-12-31 454
2013-03-31 943
2013-06-30 729
2013-09-30 1017
2013-12-31 669
2014-03-31 838
2014-06-30 958
2014-09-30 939
2014-12-31 1261
2015-03-31 797
2015-06-30 550
2015-09-30 390
2015-12-31 430
2016-03-31 403
2016-06-30 577
2016-09-30 629
2016-12-31 445
2017-03-31 415
2017-06-30 581
2017-09-30 389
2017-12-31 415
2018-03-31 256
2018-06-30 535
2018-09-30 247
2018-12-31 319
2019-03-31 420
2019-06-30 415
2019-09-30 438
2019-12-31 432
2020-03-31 159
2020-06-30 109
2020-09-30 126
2020-12-31 104
2021-03-31 108
2021-06-30 107
2021-09-30 117
2021-12-31 107
2022-03-31 101
2022-06-30 190
2022-09-30 213
2022-12-31 296
2023-03-31 237
2023-06-30 259
2023-09-30 339