Quarter	US dollars
1986-09-30	151
1986-12-31	155
1987-03-31	184
1987-06-30	192
1987-09-30	197
1987-12-31	223
1988-03-31	251
1988-06-30	219
1988-09-30	246
1988-12-31	213
1989-03-31	196
1989-06-30	204
1989-09-30	234
1989-12-31	282
1990-03-31	263
1990-06-30	276
1990-09-30	296
1990-12-31	376
1991-03-31	347
1991-06-30	333
1991-09-30	366
1991-12-31	405
1992-03-31	367
1992-06-30	356
1992-09-30	408
1992-12-31	341
1993-03-31	372
1993-06-30	343
1993-09-30	421
1993-12-31	335
1994-03-31	300
1994-06-30	306
1994-09-30	325
1994-12-31	362
1995-03-31	466
1995-06-30	482
1995-09-30	416
1995-12-31	426
1996-03-31	415
1996-06-30	435
1996-09-30	493
1996-12-31	473
1997-03-31	539
1997-06-30	539
1997-09-30	678
1997-12-31	695
1998-03-31	679
1998-06-30	568
1998-09-30	717
1998-12-31	656
1999-03-31	519
1999-06-30	480
1999-09-30	572
1999-12-31	445
2000-03-31	506
2000-06-30	472
2000-09-30	499
2000-12-31	497
2001-03-31	562
2001-06-30	410
2001-09-30	635
2001-12-31	449
2002-03-31	439
2002-06-30	485
2002-09-30	641
2002-12-31	564
2003-03-31	457
2003-06-30	518
2003-09-30	590
2003-12-31	778
2004-03-31	1007
2004-06-30	837
2004-09-30	890
2004-12-31	826
2005-03-31	977
2005-06-30	1077
2005-09-30	1051
2005-12-31	1076
2006-03-31	1019
2006-06-30	958
2006-09-30	849
2006-12-31	766
2007-03-31	917
2007-06-30	971
2007-09-30	481
2007-12-31	965
2008-03-31	1030
2008-06-30	969
2008-09-30	664
2008-12-31	263
2009-03-31	396
2009-06-30	274
2009-09-30	276
2009-12-31	411
2010-03-31	470
2010-06-30	520
2010-09-30	400
2010-12-31	362
2011-03-31	382
2011-06-30	528
2011-09-30	436
2011-12-31	346
2012-03-31	244
2012-06-30	540
2012-09-30	610
2012-12-31	454
2013-03-31	943
2013-06-30	729
2013-09-30	1017
2013-12-31	669
2014-03-31	838
2014-06-30	958
2014-09-30	939
2014-12-31	1261
2015-03-31	797
2015-06-30	550
2015-09-30	390
2015-12-31	430
2016-03-31	403
2016-06-30	577
2016-09-30	629
2016-12-31	445
2017-03-31	415
2017-06-30	581
2017-09-30	389
2017-12-31	415
2018-03-31	256
2018-06-30	535
2018-09-30	247
2018-12-31	319
2019-03-31	420
2019-06-30	415
2019-09-30	438
2019-12-31	432
2020-03-31	159
2020-06-30	109
2020-09-30	126
2020-12-31	104
2021-03-31	108
2021-06-30	107
2021-09-30	117
2021-12-31	107
2022-03-31	101
2022-06-30	190
2022-09-30	213
2022-12-31	296
2023-03-31	237
2023-06-30	259
2023-09-30	339