Quarter	US dollars
1986-09-30	7099
1986-12-31	7224
1987-03-31	7665
1987-06-30	8036
1987-09-30	8320
1987-12-31	8531
1988-03-31	10741
1988-06-30	10217
1988-09-30	10013
1988-12-31	10319
1989-03-31	10532
1989-06-30	11991
1989-09-30	13200
1989-12-31	14937
1990-03-31	16107
1990-06-30	18304
1990-09-30	21617
1990-12-31	19017
1991-03-31	21978
1991-06-30	19044
1991-09-30	20785
1991-12-31	21605
1992-03-31	20784
1992-06-30	22905
1992-09-30	27378
1992-12-31	25306
1993-03-31	23749
1993-06-30	22481
1993-09-30	22656
1993-12-31	19983
1994-03-31	18742
1994-06-30	18590
1994-09-30	18515
1994-12-31	18270
1995-03-31	21577
1995-06-30	22834
1995-09-30	22250
1995-12-31	25480
1996-03-31	25834
1996-06-30	24029
1996-09-30	26653
1996-12-31	23919
1997-03-31	23159
1997-06-30	21227
1997-09-30	22093
1997-12-31	21634
1998-03-31	21682
1998-06-30	22114
1998-09-30	27242
1998-12-31	36144
1999-03-31	30523
1999-06-30	28783
1999-09-30	30353
1999-12-31	27201
2000-03-31	30138
2000-06-30	27426
2000-09-30	24322
2000-12-31	25878
2001-03-31	31844
2001-06-30	27858
2001-09-30	31195
2001-12-31	30758
2002-03-31	32203
2002-06-30	30306
2002-09-30	29691
2002-12-31	28110
2003-03-31	31094
2003-06-30	29275
2003-09-30	29881
2003-12-31	37816
2004-03-31	42192
2004-06-30	38436
2004-09-30	39947
2004-12-31	46606
2005-03-31	42024
2005-06-30	41279
2005-09-30	42257
2005-12-31	40619
2006-03-31	46697
2006-06-30	54995
2006-09-30	46768
2006-12-31	55556
2007-03-31	61374
2007-06-30	62240
2007-09-30	76177
2007-12-31	73718
2008-03-31	72993
2008-06-30	59946
2008-09-30	63165
2008-12-31	50793
2009-03-31	55595
2009-06-30	56729
2009-09-30	58979
2009-12-31	51279
2010-03-31	56589
2010-06-30	56826
2010-09-30	58076
2010-12-31	49489
2011-03-31	53346
2011-06-30	50490
2011-09-30	59816
2011-12-31	51947
2012-03-31	55942
2012-06-30	52918
2012-09-30	56310
2012-12-31	50909
2013-03-31	50676
2013-06-30	50184
2013-09-30	48792
2013-12-31	48278
2014-03-31	46417
2014-06-30	48374
2014-09-30	47475
2014-12-31	46270
2015-03-31	45224
2015-06-30	47617
2015-09-30	47523
2015-12-31	44486
2016-03-31	42801
2016-06-30	43443
2016-09-30	48207
2016-12-31	38803
2017-03-31	36947
2017-06-30	38545
2017-09-30	42530
2017-12-31	41617
2018-03-31	45991
2018-06-30	44074
2018-09-30	40840
2018-12-31	37938
2019-03-31	35511
2019-06-30	38263
2019-09-30	39416
2019-12-31	36427
2020-03-31	37099
2020-06-30	35283
2020-09-30	37500
2020-12-31	41264
2021-03-31	38074
2021-06-30	39624
2021-09-30	42982
2021-12-31	42059
2022-03-31	37917
2022-06-30	34934
2022-09-30	34088
2022-12-31	33400
2023-03-31	38573
2023-06-30	36406
2023-09-30	30907