Quarterly US dollars
1986-09-30 259
1986-12-31 234
1987-03-31 253
1987-06-30 356
1987-09-30 253
1987-12-31 334
1988-03-31 440
1988-06-30 424
1988-09-30 429
1988-12-31 740
1989-03-31 578
1989-06-30 607
1989-09-30 672
1989-12-31 809
1990-03-31 917
1990-06-30 966
1990-09-30 915
1990-12-31 1041
1991-03-31 902
1991-06-30 957
1991-09-30 956
1991-12-31 1003
1992-03-31 881
1992-06-30 1050
1992-09-30 1124
1992-12-31 1039
1993-03-31 998
1993-06-30 906
1993-09-30 883
1993-12-31 861
1994-03-31 933
1994-06-30 1008
1994-09-30 1203
1994-12-31 1161
1995-03-31 1097
1995-06-30 1045
1995-09-30 1135
1995-12-31 1190
1996-03-31 1783
1996-06-30 1715
1996-09-30 1633
1996-12-31 1830
1997-03-31 1631
1997-06-30 1317
1997-09-30 1350
1997-12-31 1276
1998-03-31 1198
1998-06-30 1254
1998-09-30 1267
1998-12-31 1178
1999-03-31 1177
1999-06-30 1195
1999-09-30 1198
1999-12-31 1185
2000-03-31 1117
2000-06-30 1252
2000-09-30 1192
2000-12-31 1363
2001-03-31 1192
2001-06-30 1252
2001-09-30 1213
2001-12-31 975
2002-03-31 1004
2002-06-30 942
2002-09-30 950
2002-12-31 1079
2003-03-31 1141
2003-06-30 1180
2003-09-30 1160
2003-12-31 1347
2004-03-31 791
2004-06-30 963
2004-09-30 847
2004-12-31 760
2005-03-31 881
2005-06-30 823
2005-09-30 873
2005-12-31 870
2006-03-31 1034
2006-06-30 1427
2006-09-30 1394
2006-12-31 1308
2007-03-31 1862
2007-06-30 1396
2007-09-30 1421
2007-12-31 1508
2008-03-31 1244
2008-06-30 1249
2008-09-30 774
2008-12-31 663
2009-03-31 666
2009-06-30 443
2009-09-30 438
2009-12-31 501
2010-03-31 564
2010-06-30 490
2010-09-30 504
2010-12-31 416
2011-03-31 477
2011-06-30 407
2011-09-30 375
2011-12-31 420
2012-03-31 366
2012-06-30 431
2012-09-30 496
2012-12-31 444
2013-03-31 266
2013-06-30 289
2013-09-30 374
2013-12-31 445
2014-03-31 449
2014-06-30 602
2014-09-30 414
2014-12-31 409
2015-03-31 401
2015-06-30 322
2015-09-30 532
2015-12-31 423
2016-03-31 470
2016-06-30 418
2016-09-30 453
2016-12-31 346
2017-03-31 408
2017-06-30 380
2017-09-30 387
2017-12-31 433
2018-03-31 436
2018-06-30 409
2018-09-30 288
2018-12-31 334
2019-03-31 253
2019-06-30 265
2019-09-30 263
2019-12-31 285
2020-03-31 348
2020-06-30 302
2020-09-30 286
2020-12-31 264
2021-03-31 512
2021-06-30 198
2021-09-30 220
2021-12-31 322
2022-03-31 245
2022-06-30 121
2022-09-30 295
2022-12-31 205
2023-03-31 326
2023-06-30 215
2023-09-30 187