Quarter	US dollars
1986-09-30	532
1986-12-31	518
1987-03-31	506
1987-06-30	526
1987-09-30	506
1987-12-31	482
1988-03-31	483
1988-06-30	481
1988-09-30	482
1988-12-31	499
1989-03-31	490
1989-06-30	487
1989-09-30	466
1989-12-31	484
1990-03-31	458
1990-06-30	418
1990-09-30	384
1990-12-31	391
1991-03-31	284
1991-06-30	269
1991-09-30	263
1991-12-31	239
1992-03-31	238
1992-06-30	221
1992-09-30	257
1992-12-31	241
1993-03-31	225
1993-06-30	216
1993-09-30	248
1993-12-31	241
1994-03-31	222
1994-06-30	207
1994-09-30	241
1994-12-31	267
1995-03-31	242
1995-06-30	235
1995-09-30	242
1995-12-31	268
1996-03-31	246
1996-06-30	251
1996-09-30	222
1996-12-31	232
1997-03-31	259
1997-06-30	256
1997-09-30	356
1997-12-31	447
1998-03-31	396
1998-06-30	225
1998-09-30	187
1998-12-31	190
1999-03-31	211
1999-06-30	225
1999-09-30	241
1999-12-31	205
2000-03-31	325
2000-06-30	282
2000-09-30	310
2000-12-31	776
2001-03-31	171
2001-06-30	167
2001-09-30	143
2001-12-31	126
2002-03-31	106
2002-06-30	123
2002-09-30	133
2002-12-31	267
2003-03-31	86
2003-06-30	100
2003-09-30	97
2003-12-31	76
2004-03-31	104
2004-06-30	173
2004-09-30	156
2004-12-31	60
2005-03-31	75
2005-06-30	81
2005-09-30	91
2005-12-31	91
2006-03-31	100
2006-06-30	172
2006-09-30	218
2006-12-31	129
2007-03-31	127
2007-06-30	183
2007-09-30	264
2007-12-31	321
2008-03-31	324
2008-06-30	423
2008-09-30	429
2008-12-31	363
2009-03-31	395
2009-06-30	379
2009-09-30	336
2009-12-31	330
2010-03-31	453
2010-06-30	457
2010-09-30	332
2010-12-31	354
2011-03-31	367
2011-06-30	354
2011-09-30	345
2011-12-31	627
2012-03-31	463
2012-06-30	491
2012-09-30	557
2012-12-31	474
2013-03-31	457
2013-06-30	342
2013-09-30	160
2013-12-31	165
2014-03-31	160
2014-06-30	162
2014-09-30	190
2014-12-31	223
2015-03-31	224
2015-06-30	235
2015-09-30	194
2015-12-31	180
2016-03-31	206
2016-06-30	170
2016-09-30	231
2016-12-31	228
2017-03-31	242
2017-06-30	254
2017-09-30	255
2017-12-31	207
2018-03-31	378
2018-06-30	331
2018-09-30	163
2018-12-31	420
2019-03-31	483
2019-06-30	664
2019-09-30	823
2019-12-31	826
2020-03-31	1029
2020-06-30	1034
2020-09-30	807
2020-12-31	998
2021-03-31	802
2021-06-30	1215
2021-09-30	1466
2021-12-31	1448
2022-03-31	1436
2022-06-30	1649
2022-09-30	1592
2022-12-31	1569
2023-03-31	1708
2023-06-30	1727
2023-09-30	1304