Quarterly US dollars
1986-09-30 862
1986-12-31 519
1987-03-31 493
1987-06-30 601
1987-09-30 554
1987-12-31 539
1988-03-31 554
1988-06-30 297
1988-09-30 360
1988-12-31 391
1989-03-31 268
1989-06-30 297
1989-09-30 359
1989-12-31 235
1990-03-31 365
1990-06-30 293
1990-09-30 235
1990-12-31 316
1991-03-31 131
1991-06-30 202
1991-09-30 312
1991-12-31 492
1992-03-31 318
1992-06-30 425
1992-09-30 627
1992-12-31 420
1993-03-31 869
1993-06-30 570
1993-09-30 750
1993-12-31 535
1994-03-31 184
1994-06-30 426
1994-09-30 417
1994-12-31 459
1995-03-31 328
1995-06-30 228
1995-09-30 175
1995-12-31 64
1996-03-31 45
1996-06-30 64
1996-09-30 84
1996-12-31 85
1997-03-31 87
1997-06-30 533
1997-09-30 605
1997-12-31 718
1998-03-31 723
1998-06-30 427
1998-09-30 601
1998-12-31 468
1999-03-31 361
1999-06-30 478
1999-09-30 618
1999-12-31 653
2000-03-31 846
2000-06-30 1068
2000-09-30 1091
2000-12-31 1009
2001-03-31 1022
2001-06-30 1048
2001-09-30 1373
2001-12-31 1252
2002-03-31 1117
2002-06-30 1281
2002-09-30 1127
2002-12-31 1175
2003-03-31 1147
2003-06-30 941
2003-09-30 932
2003-12-31 987
2004-03-31 1001
2004-06-30 934
2004-09-30 723
2004-12-31 746
2005-03-31 640
2005-06-30 817
2005-09-30 585
2005-12-31 671
2006-03-31 994
2006-06-30 1095
2006-09-30 1106
2006-12-31 2395
2007-03-31 2555
2007-06-30 2492
2007-09-30 2439
2007-12-31 2885
2008-03-31 3194
2008-06-30 3098
2008-09-30 1740
2008-12-31 722
2009-03-31 708
2009-06-30 740
2009-09-30 815
2009-12-31 635
2010-03-31 834
2010-06-30 938
2010-09-30 776
2010-12-31 915
2011-03-31 750
2011-06-30 879
2011-09-30 876
2011-12-31 548
2012-03-31 578
2012-06-30 945
2012-09-30 848
2012-12-31 632
2013-03-31 906
2013-06-30 1119
2013-09-30 802
2013-12-31 648
2014-03-31 1036
2014-06-30 1015
2014-09-30 999
2014-12-31 770
2015-03-31 897
2015-06-30 789
2015-09-30 707
2015-12-31 724
2016-03-31 683
2016-06-30 789
2016-09-30 820
2016-12-31 776
2017-03-31 597
2017-06-30 770
2017-09-30 757
2017-12-31 746
2018-03-31 751
2018-06-30 748
2018-09-30 660
2018-12-31 662
2019-03-31 667
2019-06-30 683
2019-09-30 736
2019-12-31 665
2020-03-31 474
2020-06-30 377
2020-09-30 409
2020-12-31 328
2021-03-31 352
2021-06-30 280
2021-09-30 261
2021-12-31 242
2022-03-31 214
2022-06-30 225
2022-09-30 300
2022-12-31 289
2023-03-31 331
2023-06-30 329
2023-09-30 353