Quarter	US dollars
1986-09-30	2294
1986-12-31	2343
1987-03-31	2050
1987-06-30	2416
1987-09-30	1880
1987-12-31	2319
1988-03-31	3543
1988-06-30	3859
1988-09-30	3707
1988-12-31	3441
1989-03-31	3878
1989-06-30	3318
1989-09-30	3396
1989-12-31	3156
1990-03-31	3467
1990-06-30	4120
1990-09-30	4281
1990-12-31	4957
1991-03-31	5289
1991-06-30	5266
1991-09-30	6476
1991-12-31	5424
1992-03-31	5029
1992-06-30	6056
1992-09-30	5605
1992-12-31	4780
1993-03-31	4945
1993-06-30	4507
1993-09-30	3530
1993-12-31	4722
1994-03-31	4334
1994-06-30	5040
1994-09-30	4455
1994-12-31	4925
1995-03-31	4409
1995-06-30	5200
1995-09-30	4988
1995-12-31	4177
1996-03-31	4255
1996-06-30	3506
1996-09-30	4065
1996-12-31	3081
1997-03-31	2274
1997-06-30	3238
1997-09-30	2958
1997-12-31	3132
1998-03-31	2556
1998-06-30	2694
1998-09-30	3866
1998-12-31	3749
1999-03-31	3549
1999-06-30	3585
1999-09-30	4917
1999-12-31	3987
2000-03-31	7808
2000-06-30	8717
2000-09-30	7846
2000-12-31	8887
2001-03-31	8444
2001-06-30	10526
2001-09-30	10676
2001-12-31	8149
2002-03-31	6603
2002-06-30	10188
2002-09-30	10248
2002-12-31	10559
2003-03-31	12235
2003-06-30	7784
2003-09-30	9794
2003-12-31	8889
2004-03-31	14401
2004-06-30	14877
2004-09-30	17018
2004-12-31	14266
2005-03-31	17367
2005-06-30	12680
2005-09-30	16732
2005-12-31	15370
2006-03-31	15583
2006-06-30	14312
2006-09-30	20293
2006-12-31	20632
2007-03-31	24387
2007-06-30	20011
2007-09-30	46460
2007-12-31	38597
2008-03-31	37019
2008-06-30	20529
2008-09-30	29696
2008-12-31	16650
2009-03-31	16893
2009-06-30	19819
2009-09-30	16817
2009-12-31	12245
2010-03-31	15680
2010-06-30	27332
2010-09-30	33615
2010-12-31	32968
2011-03-31	28704
2011-06-30	31616
2011-09-30	34128
2011-12-31	47527
2012-03-31	44796
2012-06-30	42509
2012-09-30	55836
2012-12-31	52129
2013-03-31	52777
2013-06-30	48479
2013-09-30	53295
2013-12-31	63613
2014-03-31	64906
2014-06-30	78968
2014-09-30	75891
2014-12-31	76529
2015-03-31	75327
2015-06-30	76596
2015-09-30	76111
2015-12-31	78695
2016-03-31	85300
2016-06-30	77239
2016-09-30	74572
2016-12-31	67640
2017-03-31	73735
2017-06-30	73928
2017-09-30	74152
2017-12-31	78061
2018-03-31	73562
2018-06-30	60576
2018-09-30	72365
2018-12-31	70742
2019-03-31	98996
2019-06-30	90555
2019-09-30	76358
2019-12-31	65984
2020-03-31	91994
2020-06-30	74211
2020-09-30	82306
2020-12-31	94905
2021-03-31	117638
2021-06-30	117694
2021-09-30	117988
2021-12-31	122568
2022-03-31	126718
2022-06-30	119553
2022-09-30	85716
2022-12-31	72469
2023-03-31	69167
2023-06-30	60631
2023-09-30	63222