Quarter	US dollars
1986-09-30	7758
1986-12-31	9041
1987-03-31	9068
1987-06-30	8769
1987-09-30	8307
1987-12-31	9289
1988-03-31	8142
1988-06-30	8114
1988-09-30	7409
1988-12-31	8185
1989-03-31	7617
1989-06-30	6947
1989-09-30	6634
1989-12-31	7818
1990-03-31	7306
1990-06-30	7668
1990-09-30	8678
1990-12-31	9306
1991-03-31	7590
1991-06-30	7279
1991-09-30	8430
1991-12-31	7326
1992-03-31	7595
1992-06-30	7128
1992-09-30	7408
1992-12-31	6834
1993-03-31	7386
1993-06-30	7212
1993-09-30	6773
1993-12-31	6367
1994-03-31	5517
1994-06-30	5818
1994-09-30	5761
1994-12-31	6454
1995-03-31	6659
1995-06-30	6612
1995-09-30	6911
1995-12-31	6432
1996-03-31	7186
1996-06-30	7477
1996-09-30	8258
1996-12-31	8569
1997-03-31	8839
1997-06-30	8953
1997-09-30	11907
1997-12-31	10945
1998-03-31	11002
1998-06-30	10716
1998-09-30	12268
1998-12-31	13355
1999-03-31	11821
1999-06-30	16825
1999-09-30	19314
1999-12-31	19654
2000-03-31	24275
2000-06-30	19229
2000-09-30	21009
2000-12-31	23422
2001-03-31	22425
2001-06-30	20936
2001-09-30	25608
2001-12-31	26791
2002-03-31	28087
2002-06-30	28306
2002-09-30	30294
2002-12-31	31478
2003-03-31	29399
2003-06-30	38095
2003-09-30	35921
2003-12-31	36987
2004-03-31	42123
2004-06-30	43599
2004-09-30	40821
2004-12-31	41219
2005-03-31	41417
2005-06-30	43559
2005-09-30	44347
2005-12-31	44392
2006-03-31	49434
2006-06-30	51022
2006-09-30	54751
2006-12-31	59482
2007-03-31	61301
2007-06-30	71235
2007-09-30	75894
2007-12-31	81245
2008-03-31	85700
2008-06-30	88197
2008-09-30	87252
2008-12-31	71491
2009-03-31	78159
2009-06-30	83272
2009-09-30	87024
2009-12-31	88323
2010-03-31	81794
2010-06-30	86369
2010-09-30	83182
2010-12-31	87277
2011-03-31	92274
2011-06-30	98490
2011-09-30	102364
2011-12-31	83512
2012-03-31	88916
2012-06-30	82023
2012-09-30	81904
2012-12-31	81628
2013-03-31	75029
2013-06-30	72651
2013-09-30	77109
2013-12-31	88736
2014-03-31	79350
2014-06-30	82579
2014-09-30	81562
2014-12-31	79716
2015-03-31	68740
2015-06-30	68226
2015-09-30	69575
2015-12-31	65039
2016-03-31	61797
2016-06-30	64133
2016-09-30	62985
2016-12-31	66771
2017-03-31	59166
2017-06-30	51286
2017-09-30	46555
2017-12-31	48211
2018-03-31	53531
2018-06-30	53735
2018-09-30	49831
2018-12-31	56972
2019-03-31	49203
2019-06-30	54333
2019-09-30	51825
2019-12-31	56593
2020-03-31	66219
2020-06-30	59100
2020-09-30	61472
2020-12-31	90318
2021-03-31	74544
2021-06-30	76283
2021-09-30	71898
2021-12-31	88314
2022-03-31	91024
2022-06-30	78793
2022-09-30	72991
2022-12-31	75819
2023-03-31	75384
2023-06-30	67038
2023-09-30	62263