Quarter	US dollars
1986-09-30	7697
1986-12-31	7410
1987-03-31	7735
1987-06-30	8352
1987-09-30	9510
1987-12-31	9249
1988-03-31	10267
1988-06-30	9795
1988-09-30	9106
1988-12-31	8622
1989-03-31	9141
1989-06-30	9928
1989-09-30	9589
1989-12-31	9767
1990-03-31	11249
1990-06-30	11983
1990-09-30	13592
1990-12-31	15826
1991-03-31	14526
1991-06-30	13901
1991-09-30	14663
1991-12-31	15325
1992-03-31	12228
1992-06-30	16114
1992-09-30	17499
1992-12-31	16659
1993-03-31	17209
1993-06-30	20395
1993-09-30	18910
1993-12-31	18261
1994-03-31	18281
1994-06-30	19410
1994-09-30	20769
1994-12-31	21258
1995-03-31	23630
1995-06-30	26002
1995-09-30	25246
1995-12-31	30346
1996-03-31	33097
1996-06-30	31725
1996-09-30	36859
1996-12-31	34344
1997-03-31	34499
1997-06-30	33372
1997-09-30	37322
1997-12-31	39883
1998-03-31	46872
1998-06-30	46789
1998-09-30	52194
1998-12-31	39988
1999-03-31	46541
1999-06-30	39995
1999-09-30	38291
1999-12-31	35094
2000-03-31	38196
2000-06-30	33491
2000-09-30	33690
2000-12-31	34366
2001-03-31	38357
2001-06-30	35669
2001-09-30	38209
2001-12-31	39641
2002-03-31	37750
2002-06-30	42506
2002-09-30	45286
2002-12-31	46116
2003-03-31	50950
2003-06-30	57861
2003-09-30	64633
2003-12-31	91974
2004-03-31	104330
2004-06-30	120170
2004-09-30	128715
2004-12-31	134049
2005-03-31	138934
2005-06-30	147963
2005-09-30	167514
2005-12-31	169281
2006-03-31	174977
2006-06-30	174434
2006-09-30	188142
2006-12-31	212195
2007-03-31	218079
2007-06-30	230274
2007-09-30	240127
2007-12-31	244297
2008-03-31	310941
2008-06-30	308593
2008-09-30	284536
2008-12-31	269728
2009-03-31	297081
2009-06-30	307988
2009-09-30	287346
2009-12-31	280041
2010-03-31	264642
2010-06-30	231463
2010-09-30	252150
2010-12-31	229891
2011-03-31	240197
2011-06-30	256835
2011-09-30	216749
2011-12-31	196786
2012-03-31	188867
2012-06-30	186751
2012-09-30	177555
2012-12-31	178550
2013-03-31	169223
2013-06-30	162651
2013-09-30	116009
2013-12-31	120614
2014-03-31	109306
2014-06-30	106377
2014-09-30	93227
2014-12-31	65132
2015-03-31	59501
2015-06-30	56964
2015-09-30	55083
2015-12-31	47551
2016-03-31	54423
2016-06-30	52323
2016-09-30	46248
2016-12-31	41370
2017-03-31	44056
2017-06-30	45960
2017-09-30	47741
2017-12-31	53281
2018-03-31	55418
2018-06-30	52188
2018-09-30	49102
2018-12-31	49652
2019-03-31	46019
2019-06-30	41659
2019-09-30	44030
2019-12-31	38764
2020-03-31	45891
2020-06-30	41686
2020-09-30	41508
2020-12-31	41757
2021-03-31	36230
2021-06-30	36162
2021-09-30	35045
2021-12-31	33930
2022-03-31	32701
2022-06-30	33803
2022-09-30	33794
2022-12-31	37889
2023-03-31	41890
2023-06-30	47934
2023-09-30	44134