Quarter	US dollars
1986-09-30	693
1986-12-31	744
1987-03-31	754
1987-06-30	683
1987-09-30	663
1987-12-31	607
1988-03-31	564
1988-06-30	604
1988-09-30	655
1988-12-31	731
1989-03-31	685
1989-06-30	673
1989-09-30	641
1989-12-31	757
1990-03-31	694
1990-06-30	649
1990-09-30	632
1990-12-31	591
1991-03-31	530
1991-06-30	494
1991-09-30	487
1991-12-31	587
1992-03-31	577
1992-06-30	598
1992-09-30	620
1992-12-31	593
1993-03-31	581
1993-06-30	691
1993-09-30	609
1993-12-31	583
1994-03-31	632
1994-06-30	652
1994-09-30	622
1994-12-31	630
1995-03-31	543
1995-06-30	527
1995-09-30	508
1995-12-31	445
1996-03-31	464
1996-06-30	485
1996-09-30	505
1996-12-31	582
1997-03-31	703
1997-06-30	641
1997-09-30	784
1997-12-31	719
1998-03-31	810
1998-06-30	830
1998-09-30	867
1998-12-31	807
1999-03-31	748
1999-06-30	666
1999-09-30	681
1999-12-31	675
2000-03-31	853
2000-06-30	695
2000-09-30	661
2000-12-31	805
2001-03-31	885
2001-06-30	954
2001-09-30	980
2001-12-31	946
2002-03-31	989
2002-06-30	1068
2002-09-30	1060
2002-12-31	1223
2003-03-31	971
2003-06-30	788
2003-09-30	819
2003-12-31	745
2004-03-31	664
2004-06-30	760
2004-09-30	754
2004-12-31	733
2005-03-31	667
2005-06-30	676
2005-09-30	750
2005-12-31	789
2006-03-31	530
2006-06-30	667
2006-09-30	1357
2006-12-31	1639
2007-03-31	1382
2007-06-30	2432
2007-09-30	1653
2007-12-31	1861
2008-03-31	1303
2008-06-30	2140
2008-09-30	1277
2008-12-31	1041
2009-03-31	816
2009-06-30	959
2009-09-30	900
2009-12-31	596
2010-03-31	477
2010-06-30	501
2010-09-30	746
2010-12-31	445
2011-03-31	386
2011-06-30	408
2011-09-30	512
2011-12-31	590
2012-03-31	464
2012-06-30	447
2012-09-30	494
2012-12-31	497
2013-03-31	515
2013-06-30	539
2013-09-30	548
2013-12-31	609
2014-03-31	474
2014-06-30	481
2014-09-30	440
2014-12-31	285
2015-03-31	363
2015-06-30	317
2015-09-30	322
2015-12-31	285
2016-03-31	354
2016-06-30	316
2016-09-30	452
2016-12-31	228
2017-03-31	294
2017-06-30	346
2017-09-30	386
2017-12-31	281
2018-03-31	236
2018-06-30	348
2018-09-30	360
2018-12-31	272
2019-03-31	338
2019-06-30	452
2019-09-30	394
2019-12-31	557
2020-03-31	599
2020-06-30	672
2020-09-30	491
2020-12-31	626
2021-03-31	457
2021-06-30	499
2021-09-30	372
2021-12-31	455
2022-03-31	1207
2022-06-30	966
2022-09-30	624
2022-12-31	600
2023-03-31	673
2023-06-30	871
2023-09-30	1035