Quarterly US dollars
1986-09-30 21
1986-12-31 38
1987-03-31 26
1987-06-30 29
1987-09-30 26
1987-12-31 33
1988-03-31 58
1988-06-30 49
1988-09-30 58
1988-12-31 51
1989-03-31 57
1989-06-30 104
1989-09-30 93
1989-12-31 81
1990-03-31 76
1990-06-30 66
1990-09-30 118
1990-12-31 108
1991-03-31 60
1991-06-30 74
1991-09-30 41
1991-12-31 52
1992-03-31 201
1992-06-30 55
1992-09-30 57
1992-12-31 116
1993-03-31 71
1993-06-30 54
1993-09-30 115
1993-12-31 53
1994-03-31 100
1994-06-30 103
1994-09-30 64
1994-12-31 89
1995-03-31 132
1995-06-30 74
1995-09-30 61
1995-12-31 213
1996-03-31 229
1996-06-30 228
1996-09-30 112
1996-12-31 76
1997-03-31 140
1997-06-30 107
1997-09-30 165
1997-12-31 148
1998-03-31 112
1998-06-30 152
1998-09-30 169
1998-12-31 175
1999-03-31 125
1999-06-30 214
1999-09-30 175
1999-12-31 175
2000-03-31 268
2000-06-30 332
2000-09-30 264
2000-12-31 201
2001-03-31 309
2001-06-30 299
2001-09-30 291
2001-12-31 271
2002-03-31 304
2002-06-30 321
2002-09-30 376
2002-12-31 445
2003-03-31 619
2003-06-30 625
2003-09-30 657
2003-12-31 475
2004-03-31 580
2004-06-30 442
2004-09-30 664
2004-12-31 658
2005-03-31 728
2005-06-30 447
2005-09-30 697
2005-12-31 667
2006-03-31 1104
2006-06-30 1145
2006-09-30 1498
2006-12-31 1584
2007-03-31 1254
2007-06-30 976
2007-09-30 1705
2007-12-31 1203
2008-03-31 903
2008-06-30 530
2008-09-30 1191
2008-12-31 910
2009-03-31 855
2009-06-30 1230
2009-09-30 942
2009-12-31 717
2010-03-31 1499
2010-06-30 733
2010-09-30 1468
2010-12-31 1809
2011-03-31 1202
2011-06-30 1198
2011-09-30 1148
2011-12-31 2476
2012-03-31 1533
2012-06-30 1061
2012-09-30 1088
2012-12-31 589
2013-03-31 533
2013-06-30 448
2013-09-30 414
2013-12-31 317
2014-03-31 403
2014-06-30 625
2014-09-30 1144
2014-12-31 1088
2015-03-31 1363
2015-06-30 1428
2015-09-30 2010
2015-12-31 2167
2016-03-31 2808
2016-06-30 3042
2016-09-30 2114
2016-12-31 2585
2017-03-31 2412
2017-06-30 1503
2017-09-30 571
2017-12-31 1922
2018-03-31 292
2018-06-30 708
2018-09-30 866
2018-12-31 1158
2019-03-31 628
2019-06-30 1170
2019-09-30 634
2019-12-31 1068
2020-03-31 1580
2020-06-30 520
2020-09-30 390
2020-12-31 644
2021-03-31 699
2021-06-30 697
2021-09-30 369
2021-12-31 564
2022-03-31 319
2022-06-30 818
2022-09-30 1057
2022-12-31 1154
2023-03-31 902
2023-06-30 705
2023-09-30 1429