Quarter	US dollars
1986-09-30	109
1986-12-31	88
1987-03-31	135
1987-06-30	152
1987-09-30	144
1987-12-31	149
1988-03-31	152
1988-06-30	163
1988-09-30	252
1988-12-31	259
1989-03-31	258
1989-06-30	247
1989-09-30	284
1989-12-31	366
1990-03-31	428
1990-06-30	453
1990-09-30	499
1990-12-31	567
1991-03-31	476
1991-06-30	502
1991-09-30	566
1991-12-31	611
1992-03-31	636
1992-06-30	720
1992-09-30	692
1992-12-31	621
1993-03-31	601
1993-06-30	356
1993-09-30	401
1993-12-31	356
1994-03-31	315
1994-06-30	359
1994-09-30	365
1994-12-31	318
1995-03-31	300
1995-06-30	273
1995-09-30	258
1995-12-31	381
1996-03-31	413
1996-06-30	365
1996-09-30	351
1996-12-31	391
1997-03-31	272
1997-06-30	406
1997-09-30	313
1997-12-31	394
1998-03-31	402
1998-06-30	423
1998-09-30	428
1998-12-31	515
1999-03-31	639
1999-06-30	641
1999-09-30	759
1999-12-31	704
2000-03-31	665
2000-06-30	693
2000-09-30	617
2000-12-31	712
2001-03-31	838
2001-06-30	851
2001-09-30	863
2001-12-31	828
2002-03-31	765
2002-06-30	906
2002-09-30	1073
2002-12-31	1169
2003-03-31	1219
2003-06-30	1180
2003-09-30	1212
2003-12-31	1338
2004-03-31	1483
2004-06-30	1528
2004-09-30	1512
2004-12-31	1492
2005-03-31	1662
2005-06-30	1566
2005-09-30	1475
2005-12-31	1392
2006-03-31	1851
2006-06-30	1853
2006-09-30	3972
2006-12-31	4195
2007-03-31	4365
2007-06-30	6887
2007-09-30	6932
2007-12-31	6589
2008-03-31	8814
2008-06-30	9388
2008-09-30	7337
2008-12-31	5920
2009-03-31	5073
2009-06-30	5164
2009-09-30	4995
2009-12-31	5626
2010-03-31	6618
2010-06-30	5368
2010-09-30	5710
2010-12-31	5537
2011-03-31	4747
2011-06-30	4307
2011-09-30	4126
2011-12-31	4869
2012-03-31	4871
2012-06-30	4603
2012-09-30	4938
2012-12-31	4778
2013-03-31	4647
2013-06-30	4680
2013-09-30	4229
2013-12-31	4873
2014-03-31	5659
2014-06-30	5153
2014-09-30	5201
2014-12-31	5524
2015-03-31	5081
2015-06-30	5156
2015-09-30	3733
2015-12-31	4965
2016-03-31	4948
2016-06-30	3555
2016-09-30	4266
2016-12-31	4076
2017-03-31	3714
2017-06-30	4257
2017-09-30	4574
2017-12-31	4336
2018-03-31	5415
2018-06-30	4031
2018-09-30	3575
2018-12-31	4378
2019-03-31	4041
2019-06-30	4372
2019-09-30	4268
2019-12-31	4005
2020-03-31	4288
2020-06-30	3755
2020-09-30	3939
2020-12-31	3676
2021-03-31	2883
2021-06-30	2773
2021-09-30	2749
2021-12-31	3394
2022-03-31	3765
2022-06-30	4441
2022-09-30	3283
2022-12-31	2931
2023-03-31	3457
2023-06-30	3736
2023-09-30	3953