Quarter	US dollars
1986-09-30	29115
1986-12-31	30959
1987-03-31	32270
1987-06-30	36296
1987-09-30	34546
1987-12-31	40884
1988-03-31	39495
1988-06-30	39740
1988-09-30	39386
1988-12-31	41598
1989-03-31	41128
1989-06-30	40868
1989-09-30	43937
1989-12-31	45932
1990-03-31	51925
1990-06-30	51015
1990-09-30	57183
1990-12-31	60716
1991-03-31	54938
1991-06-30	52265
1991-09-30	54014
1991-12-31	58021
1992-03-31	52931
1992-06-30	55151
1992-09-30	70981
1992-12-31	77240
1993-03-31	83889
1993-06-30	70751
1993-09-30	80274
1993-12-31	79068
1994-03-31	81753
1994-06-30	85108
1994-09-30	84102
1994-12-31	90288
1995-03-31	107462
1995-06-30	109510
1995-09-30	97353
1995-12-31	98899
1996-03-31	93430
1996-06-30	88275
1996-09-30	90666
1996-12-31	82787
1997-03-31	78764
1997-06-30	80532
1997-09-30	72245
1997-12-31	90449
1998-03-31	88841
1998-06-30	88575
1998-09-30	97301
1998-12-31	96114
1999-03-31	89862
1999-06-30	80497
1999-09-30	90762
1999-12-31	75649
2000-03-31	74228
2000-06-30	72526
2000-09-30	72230
2000-12-31	74728
2001-03-31	79705
2001-06-30	80586
2001-09-30	85448
2001-12-31	81787
2002-03-31	80283
2002-06-30	84923
2002-09-30	97246
2002-12-31	119121
2003-03-31	118910
2003-06-30	124046
2003-09-30	131440
2003-12-31	115038
2004-03-31	149837
2004-06-30	139153
2004-09-30	156627
2004-12-31	155344
2005-03-31	190257
2005-06-30	202790
2005-09-30	183342
2005-12-31	219459
2006-03-31	216249
2006-06-30	212621
2006-09-30	222524
2006-12-31	228097
2007-03-31	303546
2007-06-30	317399
2007-09-30	340708
2007-12-31	335916
2008-03-31	409174
2008-06-30	346623
2008-09-30	280516
2008-12-31	284212
2009-03-31	257094
2009-06-30	251488
2009-09-30	267492
2009-12-31	278812
2010-03-31	296935
2010-06-30	275034
2010-09-30	324102
2010-12-31	285494
2011-03-31	301747
2011-06-30	307494
2011-09-30	319457
2011-12-31	308587
2012-03-31	326099
2012-06-30	309164
2012-09-30	292184
2012-12-31	320676
2013-03-31	290018
2013-06-30	280780
2013-09-30	285755
2013-12-31	257714
2014-03-31	286338
2014-06-30	275858
2014-09-30	247511
2014-12-31	235936
2015-03-31	249791
2015-06-30	252416
2015-09-30	252019
2015-12-31	233776
2016-03-31	241205
2016-06-30	228142
2016-09-30	234019
2016-12-31	218442
2017-03-31	249905
2017-06-30	238699
2017-09-30	240772
2017-12-31	213761
2018-03-31	237128
2018-06-30	223213
2018-09-30	237828
2018-12-31	232876
2019-03-31	281699
2019-06-30	295687
2019-09-30	301788
2019-12-31	265856
2020-03-31	291215
2020-06-30	265673
2020-09-30	296208
2020-12-31	334310
2021-03-31	304223
2021-06-30	293057
2021-09-30	296817
2021-12-31	283935
2022-03-31	313670
2022-06-30	272202
2022-09-30	255852
2022-12-31	248443
2023-03-31	248284
2023-06-30	250904
2023-09-30	246151