Quarter	US dollars
1986-09-30	13758
1986-12-31	13792
1987-03-31	15094
1987-06-30	14590
1987-09-30	14074
1987-12-31	13880
1988-03-31	13690
1988-06-30	13682
1988-09-30	14453
1988-12-31	14140
1989-03-31	14449
1989-06-30	15292
1989-09-30	17851
1989-12-31	17090
1990-03-31	14725
1990-06-30	15622
1990-09-30	17416
1990-12-31	19160
1991-03-31	16632
1991-06-30	15154
1991-09-30	15005
1991-12-31	15287
1992-03-31	15441
1992-06-30	16382
1992-09-30	18185
1992-12-31	16924
1993-03-31	15202
1993-06-30	13300
1993-09-30	13395
1993-12-31	14514
1994-03-31	15000
1994-06-30	16861
1994-09-30	17544
1994-12-31	18862
1995-03-31	21870
1995-06-30	21967
1995-09-30	20774
1995-12-31	21175
1996-03-31	19668
1996-06-30	19468
1996-09-30	23494
1996-12-31	24741
1997-03-31	24348
1997-06-30	28870
1997-09-30	29093
1997-12-31	32819
1998-03-31	30574
1998-06-30	29681
1998-09-30	31631
1998-12-31	35822
1999-03-31	40896
1999-06-30	46525
1999-09-30	46249
1999-12-31	38384
2000-03-31	48208
2000-06-30	50465
2000-09-30	50841
2000-12-31	51226
2001-03-31	51803
2001-06-30	53681
2001-09-30	52351
2001-12-31	58190
2002-03-31	59696
2002-06-30	53922
2002-09-30	61276
2002-12-31	64777
2003-03-31	61437
2003-06-30	64075
2003-09-30	63482
2003-12-31	70006
2004-03-31	73295
2004-06-30	71604
2004-09-30	79125
2004-12-31	90191
2005-03-31	89288
2005-06-30	84529
2005-09-30	76043
2005-12-31	73164
2006-03-31	74891
2006-06-30	81221
2006-09-30	82945
2006-12-31	93743
2007-03-31	94757
2007-06-30	95982
2007-09-30	105490
2007-12-31	110340
2008-03-31	103147
2008-06-30	101151
2008-09-30	109243
2008-12-31	104382
2009-03-31	88677
2009-06-30	96921
2009-09-30	92780
2009-12-31	81659
2010-03-31	78027
2010-06-30	67667
2010-09-30	71636
2010-12-31	62428
2011-03-31	59478
2011-06-30	63423
2011-09-30	70547
2011-12-31	72421
2012-03-31	70304
2012-06-30	77452
2012-09-30	83266
2012-12-31	84570
2013-03-31	72750
2013-06-30	74035
2013-09-30	66111
2013-12-31	75416
2014-03-31	53900
2014-06-30	62010
2014-09-30	69373
2014-12-31	67988
2015-03-31	62874
2015-06-30	57733
2015-09-30	60792
2015-12-31	59106
2016-03-31	58729
2016-06-30	57243
2016-09-30	66715
2016-12-31	65795
2017-03-31	58588
2017-06-30	58466
2017-09-30	64773
2017-12-31	65617
2018-03-31	82105
2018-06-30	77945
2018-09-30	60869
2018-12-31	73132
2019-03-31	66900
2019-06-30	73155
2019-09-30	69385
2019-12-31	77064
2020-03-31	87541
2020-06-30	77563
2020-09-30	86240
2020-12-31	82758
2021-03-31	83769
2021-06-30	89617
2021-09-30	106632
2021-12-31	111942
2022-03-31	140096
2022-06-30	138675
2022-09-30	163896
2022-12-31	142441
2023-03-31	135399
2023-06-30	137201
2023-09-30	131183