Quarter	US dollars
1986-09-30	252
1986-12-31	356
1987-03-31	366
1987-06-30	452
1987-09-30	579
1987-12-31	673
1988-03-31	661
1988-06-30	728
1988-09-30	776
1988-12-31	896
1989-03-31	786
1989-06-30	740
1989-09-30	922
1989-12-31	1033
1990-03-31	1370
1990-06-30	1862
1990-09-30	2912
1990-12-31	2711
1991-03-31	1965
1991-06-30	1630
1991-09-30	1761
1991-12-31	1463
1992-03-31	1082
1992-06-30	1630
1992-09-30	2062
1992-12-31	2085
1993-03-31	2128
1993-06-30	2194
1993-09-30	2254
1993-12-31	2230
1994-03-31	2525
1994-06-30	2572
1994-09-30	2473
1994-12-31	2632
1995-03-31	2851
1995-06-30	3863
1995-09-30	4134
1995-12-31	4041
1996-03-31	4426
1996-06-30	4494
1996-09-30	3670
1996-12-31	4016
1997-03-31	4392
1997-06-30	4581
1997-09-30	5222
1997-12-31	6400
1998-03-31	5190
1998-06-30	6276
1998-09-30	5294
1998-12-31	4042
1999-03-31	4221
1999-06-30	3631
1999-09-30	4465
1999-12-31	4019
2000-03-31	4375
2000-06-30	3993
2000-09-30	4149
2000-12-31	4104
2001-03-31	5004
2001-06-30	4708
2001-09-30	3942
2001-12-31	4944
2002-03-31	5101
2002-06-30	3871
2002-09-30	4180
2002-12-31	3960
2003-03-31	3857
2003-06-30	3320
2003-09-30	3291
2003-12-31	4363
2004-03-31	4988
2004-06-30	5499
2004-09-30	4721
2004-12-31	5977
2005-03-31	6542
2005-06-30	8678
2005-09-30	6905
2005-12-31	6589
2006-03-31	8614
2006-06-30	10846
2006-09-30	9541
2006-12-31	7720
2007-03-31	10809
2007-06-30	9084
2007-09-30	8855
2007-12-31	10978
2008-03-31	9842
2008-06-30	11827
2008-09-30	8187
2008-12-31	3955
2009-03-31	2505
2009-06-30	2750
2009-09-30	4161
2009-12-31	3212
2010-03-31	4299
2010-06-30	3458
2010-09-30	6019
2010-12-31	4697
2011-03-31	9481
2011-06-30	9267
2011-09-30	7681
2011-12-31	5814
2012-03-31	5414
2012-06-30	5658
2012-09-30	6202
2012-12-31	6103
2013-03-31	6803
2013-06-30	6216
2013-09-30	6502
2013-12-31	8841
2014-03-31	7140
2014-06-30	9244
2014-09-30	8924
2014-12-31	9458
2015-03-31	9892
2015-06-30	11187
2015-09-30	10373
2015-12-31	6960
2016-03-31	6097
2016-06-30	13734
2016-09-30	13392
2016-12-31	11598
2017-03-31	13796
2017-06-30	11814
2017-09-30	8810
2017-12-31	10015
2018-03-31	14265
2018-06-30	7513
2018-09-30	9804
2018-12-31	11551
2019-03-31	8546
2019-06-30	7955
2019-09-30	8290
2019-12-31	7065
2020-03-31	10138
2020-06-30	8790
2020-09-30	8225
2020-12-31	9327
2021-03-31	3468
2021-06-30	5240
2021-09-30	5331
2021-12-31	3492
2022-03-31	5278
2022-06-30	5395
2022-09-30	6150
2022-12-31	6266
2023-03-31	5924
2023-06-30	5898
2023-09-30	9168