Quarterly US dollars
1986-09-30 24
1986-12-31 31
1987-03-31 22
1987-06-30 30
1987-09-30 18
1987-12-31 22
1988-03-31 25
1988-06-30 28
1988-09-30 17
1988-12-31 17
1989-03-31 17
1989-06-30 19
1989-09-30 21
1989-12-31 19
1990-03-31 29
1990-06-30 25
1990-09-30 25
1990-12-31 18
1991-03-31 14
1991-06-30 14
1991-09-30 10
1991-12-31 14
1992-03-31 10
1992-06-30 16
1992-09-30 15
1992-12-31 16
1993-03-31 16
1993-06-30 9
1993-09-30 9
1993-12-31 20
1994-03-31 19
1994-06-30 21
1994-09-30 20
1994-12-31 18
1995-03-31 15
1995-06-30 22
1995-09-30 22
1995-12-31 18
1996-03-31 25
1996-06-30 23
1996-09-30 47
1996-12-31 31
1997-03-31 14
1997-06-30 16
1997-09-30 20
1997-12-31 25
1998-03-31 21
1998-06-30 29
1998-09-30 25
1998-12-31 32
1999-03-31 32
1999-06-30 35
1999-09-30 38
1999-12-31 37
2000-03-31 40
2000-06-30 60
2000-09-30 58
2000-12-31 64
2001-03-31 75
2001-06-30 65
2001-09-30 64
2001-12-31 65
2002-03-31 50
2002-06-30 53
2002-09-30 49
2002-12-31 51
2003-03-31 54
2003-06-30 77
2003-09-30 66
2003-12-31 65
2004-03-31 44
2004-06-30 40
2004-09-30 37
2004-12-31 31
2005-03-31 35
2005-06-30 42
2005-09-30 36
2005-12-31 34
2006-03-31 36
2006-06-30 40
2006-09-30 41
2006-12-31 50
2007-03-31 44
2007-06-30 92
2007-09-30 97
2007-12-31 118
2008-03-31 99
2008-06-30 110
2008-09-30 242
2008-12-31 137
2009-03-31 93
2009-06-30 124
2009-09-30 111
2009-12-31 133
2010-03-31 102
2010-06-30 187
2010-09-30 222
2010-12-31 202
2011-03-31 179
2011-06-30 231
2011-09-30 231
2011-12-31 325
2012-03-31 384
2012-06-30 391
2012-09-30 340
2012-12-31 340
2013-03-31 402
2013-06-30 388
2013-09-30 389
2013-12-31 402
2014-03-31 417
2014-06-30 454
2014-09-30 452
2014-12-31 419
2015-03-31 405
2015-06-30 374
2015-09-30 348
2015-12-31 326
2016-03-31 305
2016-06-30 339
2016-09-30 324
2016-12-31 318
2017-03-31 336
2017-06-30 370
2017-09-30 303
2017-12-31 230
2018-03-31 278
2018-06-30 331
2018-09-30 300
2018-12-31 297
2019-03-31 294
2019-06-30 335
2019-09-30 329
2019-12-31 313
2020-03-31 311
2020-06-30 374
2020-09-30 419
2020-12-31 490
2021-03-31 500
2021-06-30 528
2021-09-30 567
2021-12-31 475
2022-03-31 516
2022-06-30 362
2022-09-30 365
2022-12-31 332
2023-03-31 336
2023-06-30 307
2023-09-30 295