Quarter	US dollars
1986-09-30	426
1986-12-31	541
1987-03-31	484
1987-06-30	615
1987-09-30	469
1987-12-31	807
1988-03-31	834
1988-06-30	718
1988-09-30	587
1988-12-31	539
1989-03-31	523
1989-06-30	497
1989-09-30	626
1989-12-31	610
1990-03-31	436
1990-06-30	484
1990-09-30	729
1990-12-31	504
1991-03-31	525
1991-06-30	685
1991-09-30	525
1991-12-31	600
1992-03-31	406
1992-06-30	599
1992-09-30	588
1992-12-31	691
1993-03-31	736
1993-06-30	704
1993-09-30	560
1993-12-31	687
1994-03-31	484
1994-06-30	483
1994-09-30	805
1994-12-31	758
1995-03-31	445
1995-06-30	408
1995-09-30	525
1995-12-31	644
1996-03-31	511
1996-06-30	586
1996-09-30	484
1996-12-31	742
1997-03-31	541
1997-06-30	607
1997-09-30	1993
1997-12-31	1661
1998-03-31	1157
1998-06-30	945
1998-09-30	1438
1998-12-31	1769
1999-03-31	2369
1999-06-30	2262
1999-09-30	2233
1999-12-31	2051
2000-03-31	2697
2000-06-30	1734
2000-09-30	2404
2000-12-31	1609
2001-03-31	1363
2001-06-30	1515
2001-09-30	1497
2001-12-31	1254
2002-03-31	1549
2002-06-30	1591
2002-09-30	1437
2002-12-31	1210
2003-03-31	1210
2003-06-30	1526
2003-09-30	1161
2003-12-31	705
2004-03-31	1041
2004-06-30	753
2004-09-30	1497
2004-12-31	1241
2005-03-31	1267
2005-06-30	1254
2005-09-30	1427
2005-12-31	2044
2006-03-31	2487
2006-06-30	3624
2006-09-30	2391
2006-12-31	2883
2007-03-31	3415
2007-06-30	2892
2007-09-30	2750
2007-12-31	4558
2008-03-31	3077
2008-06-30	2308
2008-09-30	1326
2008-12-31	1079
2009-03-31	1084
2009-06-30	1385
2009-09-30	1547
2009-12-31	1578
2010-03-31	1181
2010-06-30	2120
2010-09-30	1266
2010-12-31	1651
2011-03-31	1411
2011-06-30	1460
2011-09-30	1886
2011-12-31	788
2012-03-31	686
2012-06-30	517
2012-09-30	402
2012-12-31	735
2013-03-31	1266
2013-06-30	1143
2013-09-30	1354
2013-12-31	1409
2014-03-31	598
2014-06-30	1844
2014-09-30	2547
2014-12-31	2204
2015-03-31	2984
2015-06-30	2583
2015-09-30	1815
2015-12-31	1575
2016-03-31	2656
2016-06-30	2530
2016-09-30	2343
2016-12-31	2151
2017-03-31	1815
2017-06-30	1574
2017-09-30	1695
2017-12-31	2145
2018-03-31	2034
2018-06-30	2079
2018-09-30	1682
2018-12-31	2579
2019-03-31	1855
2019-06-30	1546
2019-09-30	1891
2019-12-31	1158
2020-03-31	1545
2020-06-30	1716
2020-09-30	1642
2020-12-31	2344
2021-03-31	2715
2021-06-30	2730
2021-09-30	2467
2021-12-31	2209
2022-03-31	1795
2022-06-30	1594
2022-09-30	1926
2022-12-31	2129
2023-03-31	2312
2023-06-30	1814
2023-09-30	2822