Quarter	US dollars
1986-09-30	1559
1986-12-31	1596
1987-03-31	1707
1987-06-30	2046
1987-09-30	2286
1987-12-31	2749
1988-03-31	2906
1988-06-30	3430
1988-09-30	2806
1988-12-31	2967
1989-03-31	3477
1989-06-30	3331
1989-09-30	3501
1989-12-31	3430
1990-03-31	3592
1990-06-30	4074
1990-09-30	4905
1990-12-31	4899
1991-03-31	4182
1991-06-30	4397
1991-09-30	4933
1991-12-31	4686
1992-03-31	4641
1992-06-30	4710
1992-09-30	4889
1992-12-31	4520
1993-03-31	4321
1993-06-30	4530
1993-09-30	4657
1993-12-31	5186
1994-03-31	4789
1994-06-30	4149
1994-09-30	4633
1994-12-31	4202
1995-03-31	4261
1995-06-30	3944
1995-09-30	3747
1995-12-31	4299
1996-03-31	4687
1996-06-30	6134
1996-09-30	6716
1996-12-31	5821
1997-03-31	7214
1997-06-30	6992
1997-09-30	8652
1997-12-31	7180
1998-03-31	8105
1998-06-30	9646
1998-09-30	8029
1998-12-31	7860
1999-03-31	8402
1999-06-30	9200
1999-09-30	10247
1999-12-31	9068
2000-03-31	11678
2000-06-30	9035
2000-09-30	8316
2000-12-31	8008
2001-03-31	10801
2001-06-30	10088
2001-09-30	10346
2001-12-31	10270
2002-03-31	11682
2002-06-30	13840
2002-09-30	14606
2002-12-31	15639
2003-03-31	14428
2003-06-30	18074
2003-09-30	20224
2003-12-31	18885
2004-03-31	24562
2004-06-30	23373
2004-09-30	25730
2004-12-31	24360
2005-03-31	26736
2005-06-30	28391
2005-09-30	28114
2005-12-31	27080
2006-03-31	28130
2006-06-30	36095
2006-09-30	35539
2006-12-31	38373
2007-03-31	49191
2007-06-30	49034
2007-09-30	49726
2007-12-31	44215
2008-03-31	47962
2008-06-30	51912
2008-09-30	48025
2008-12-31	40326
2009-03-31	46846
2009-06-30	54388
2009-09-30	54553
2009-12-31	46462
2010-03-31	53359
2010-06-30	45123
2010-09-30	55332
2010-12-31	53507
2011-03-31	50215
2011-06-30	67429
2011-09-30	72030
2011-12-31	65478
2012-03-31	73351
2012-06-30	77746
2012-09-30	82089
2012-12-31	78493
2013-03-31	70738
2013-06-30	64880
2013-09-30	64695
2013-12-31	66153
2014-03-31	68251
2014-06-30	68943
2014-09-30	69199
2014-12-31	64876
2015-03-31	62465
2015-06-30	66256
2015-09-30	71190
2015-12-31	75749
2016-03-31	69787
2016-06-30	73589
2016-09-30	70559
2016-12-31	74261
2017-03-31	69536
2017-06-30	63621
2017-09-30	58682
2017-12-31	63294
2018-03-31	73295
2018-06-30	75124
2018-09-30	74019
2018-12-31	74952
2019-03-31	67028
2019-06-30	61842
2019-09-30	62995
2019-12-31	64661
2020-03-31	79284
2020-06-30	81168
2020-09-30	85211
2020-12-31	99666
2021-03-31	84966
2021-06-30	75573
2021-09-30	66047
2021-12-31	75982
2022-03-31	72730
2022-06-30	76606
2022-09-30	76904
2022-12-31	80175
2023-03-31	65399
2023-06-30	61368
2023-09-30	62443