Quarter	US dollars
1986-09-30	244
1986-12-31	241
1987-03-31	234
1987-06-30	259
1987-09-30	255
1987-12-31	289
1988-03-31	225
1988-06-30	217
1988-09-30	307
1988-12-31	238
1989-03-31	236
1989-06-30	206
1989-09-30	246
1989-12-31	258
1990-03-31	254
1990-06-30	236
1990-09-30	316
1990-12-31	306
1991-03-31	353
1991-06-30	498
1991-09-30	582
1991-12-31	431
1992-03-31	437
1992-06-30	619
1992-09-30	504
1992-12-31	510
1993-03-31	414
1993-06-30	516
1993-09-30	559
1993-12-31	422
1994-03-31	379
1994-06-30	325
1994-09-30	367
1994-12-31	582
1995-03-31	377
1995-06-30	466
1995-09-30	348
1995-12-31	299
1996-03-31	393
1996-06-30	440
1996-09-30	517
1996-12-31	369
1997-03-31	374
1997-06-30	488
1997-09-30	572
1997-12-31	608
1998-03-31	690
1998-06-30	573
1998-09-30	541
1998-12-31	502
1999-03-31	545
1999-06-30	467
1999-09-30	456
1999-12-31	391
2000-03-31	368
2000-06-30	545
2000-09-30	520
2000-12-31	495
2001-03-31	298
2001-06-30	271
2001-09-30	323
2001-12-31	176
2002-03-31	171
2002-06-30	199
2002-09-30	302
2002-12-31	143
2003-03-31	228
2003-06-30	300
2003-09-30	671
2003-12-31	1141
2004-03-31	939
2004-06-30	386
2004-09-30	328
2004-12-31	282
2005-03-31	287
2005-06-30	302
2005-09-30	379
2005-12-31	573
2006-03-31	500
2006-06-30	730
2006-09-30	542
2006-12-31	460
2007-03-31	672
2007-06-30	1133
2007-09-30	1073
2007-12-31	510
2008-03-31	523
2008-06-30	550
2008-09-30	764
2008-12-31	458
2009-03-31	356
2009-06-30	655
2009-09-30	731
2009-12-31	751
2010-03-31	707
2010-06-30	557
2010-09-30	577
2010-12-31	431
2011-03-31	387
2011-06-30	503
2011-09-30	459
2011-12-31	320
2012-03-31	360
2012-06-30	388
2012-09-30	294
2012-12-31	249
2013-03-31	224
2013-06-30	396
2013-09-30	589
2013-12-31	541
2014-03-31	504
2014-06-30	521
2014-09-30	476
2014-12-31	474
2015-03-31	670
2015-06-30	858
2015-09-30	590
2015-12-31	695
2016-03-31	496
2016-06-30	458
2016-09-30	244
2016-12-31	286
2017-03-31	464
2017-06-30	331
2017-09-30	509
2017-12-31	283
2018-03-31	351
2018-06-30	364
2018-09-30	320
2018-12-31	134
2019-03-31	246
2019-06-30	353
2019-09-30	219
2019-12-31	107
2020-03-31	146
2020-06-30	389
2020-09-30	356
2020-12-31	344
2021-03-31	446
2021-06-30	791
2021-09-30	436
2021-12-31	265
2022-03-31	371
2022-06-30	561
2022-09-30	358
2022-12-31	451
2023-03-31	413
2023-06-30	536
2023-09-30	433