Quarterly US dollars
1986-09-30 38000
1986-12-31 38000
1987-03-31 42000
1987-06-30 43000
1987-09-30 44000
1987-12-31 51000
1988-03-31 52000
1988-06-30 50000
1988-09-30 50000
1988-12-31 51000
1989-03-31 55000
1989-06-30 54000
1989-09-30 57000
1989-12-31 63000
1990-03-31 74000
1990-06-30 77000
1990-09-30 87000
1990-12-31 96000
1991-03-31 91000
1991-06-30 87000
1991-09-30 96000
1991-12-31 102000
1992-03-31 102000
1992-06-30 110000
1992-09-30 138000
1992-12-31 129000
1993-03-31 139000
1993-06-30 137000
1993-09-30 147000
1993-12-31 149000
1994-03-31 161000
1994-06-30 171000
1994-09-30 177000
1994-12-31 202000
1995-03-31 237000
1995-06-30 266000
1995-09-30 277000
1995-12-31 271000
1996-03-31 268000
1996-06-30 276000
1996-09-30 277000
1996-12-31 275000
1997-03-31 276000
1997-06-30 288000
1997-09-30 312000
1997-12-31 324000
1998-03-31 351000
1998-06-30 372000
1998-09-30 374000
1998-12-31 388000
1999-03-31 366604
1999-06-30 405600
1999-09-30 393506
1999-12-31 386149
2000-03-31 419955
2000-06-30 397527
2000-09-30 390425
2000-12-31 405685
2001-03-31 448037
2001-06-30 424365
2001-09-30 433091
2001-12-31 407907
2002-03-31 412710
2002-06-30 427383
2002-09-30 444538
2002-12-31 462482
2003-03-31 510209
2003-06-30 558532
2003-09-30 575654
2003-12-31 611159
2004-03-31 682780
2004-06-30 644747
2004-09-30 627923
2004-12-31 706411
2005-03-31 758709
2005-06-30 746559
2005-09-30 718265
2005-12-31 695319
2006-03-31 790534
2006-06-30 822960
2006-09-30 806894
2006-12-31 808032
2007-03-31 907781
2007-06-30 935835
2007-09-30 992256
2007-12-31 958671
2008-03-31 1015331
2008-06-30 969957
2008-09-30 905525
2008-12-31 728740
2009-03-31 662287
2009-06-30 683147
2009-09-30 649779
2009-12-31 651846
2010-03-31 627701
2010-06-30 609260
2010-09-30 658366
2010-12-31 642823
2011-03-31 649412
2011-06-30 641883
2011-09-30 634688
2011-12-31 558411
2012-03-31 565333
2012-06-30 517148
2012-09-30 518441
2012-12-31 502131
2013-03-31 501702
2013-06-30 472767
2013-09-30 448311
2013-12-31 440906
2014-03-31 478777
2014-06-30 486225
2014-09-30 450708
2014-12-31 424400
2015-03-31 436121
2015-06-30 421563
2015-09-30 393750
2015-12-31 399488
2016-03-31 408499
2016-06-30 433362
2016-09-30 428410
2016-12-31 373151
2017-03-31 371140
2017-06-30 382136
2017-09-30 378868
2017-12-31 385001
2018-03-31 382404
2018-06-30 318596
2018-09-30 328063
2018-12-31 312208
2019-03-31 352739
2019-06-30 369585
2019-09-30 374379
2019-12-31 340696
2020-03-31 402672
2020-06-30 370236
2020-09-30 413679
2020-12-31 373326
2021-03-31 361277
2021-06-30 364238
2021-09-30 392633
2021-12-31 394829
2022-03-31 404078
2022-06-30 349215
2022-09-30 333865
2022-12-31 323155
2023-03-31 341337
2023-06-30 323708
2023-09-30 328117