Quarter	US dollars
1999-09-30	-1320
1999-12-31	597
2000-03-31	-6629
2000-06-30	5534
2000-09-30	1874
2000-12-31	5578
2001-03-31	-4872
2001-06-30	-225
2001-09-30	523
2001-12-31	-3161
2002-03-31	-480
2002-06-30	3736
2002-09-30	286
2002-12-31	-1180
2003-03-31	-1098
2003-06-30	-126
2003-09-30	3199
2003-12-31	1278
2004-03-31	377
2004-06-30	-770
2004-09-30	260
2004-12-31	3814
2005-03-31	-966
2005-06-30	-655
2005-09-30	-841
2005-12-31	819
2006-03-31	639
2006-06-30	116
2006-09-30	2592
2006-12-31	1771
2007-03-31	-292
2007-06-30	-98
2007-09-30	-90
2007-12-31	4443
2008-03-31	2197
2008-06-30	-342
2008-09-30	-7012
2008-12-31	-3047
2009-03-31	-3539
2009-06-30	5476
2009-09-30	12341
2009-12-31	886
2010-03-31	4953
2010-06-30	2023
2010-09-30	6476
2010-12-31	279
2011-03-31	7860
2011-06-30	5054
2011-09-30	3560
2011-12-31	-802
2012-03-31	5132
2012-06-30	2501
2012-09-30	3910
2012-12-31	82
2013-03-31	-1336
2013-06-30	-1776
2013-09-30	6300
2013-12-31	450
2014-03-31	6547
2014-06-30	613
2014-09-30	-4503
2014-12-31	-2373
2015-03-31	15529
2015-06-30	2672
2015-09-30	3749
2015-12-31	-552
2016-03-31	7531
2016-06-30	5449
2016-09-30	3263
2016-12-31	-10144
2017-03-31	6906
2017-06-30	7274
2017-09-30	3549
2017-12-31	4235
2018-03-31	5660
2018-06-30	-1480
2018-09-30	-1474
2018-12-31	15320
2019-03-31	-7084
2019-06-30	-1287
2019-09-30	-5330
2019-12-31	19840
2020-03-31	-7595
2020-06-30	2522
2020-09-30	-3999
2020-12-31	13012
2021-03-31	-8507
2021-06-30	-1555
2021-09-30	25575
2021-12-31	1541
2022-03-31	-3380
2022-06-30	-15100
2022-09-30	-13679
2022-12-31	14013
2023-03-31	526
2023-06-30	-1586
2023-09-30	-2917
2023-12-31	8903