Quarter	US dollars
2004-12-31	7215
2005-03-31	6556
2005-06-30	6363
2005-09-30	7445
2005-12-31	5644
2006-03-31	3856
2006-06-30	3948
2006-09-30	2985
2006-12-31	3605
2007-03-31	4482
2007-06-30	4701
2007-09-30	5006
2007-12-31	4848
2008-03-31	6424
2008-06-30	6926
2008-09-30	5088
2008-12-31	3312
2009-03-31	6449
2009-06-30	6241
2009-09-30	5418
2009-12-31	4124
2010-03-31	2921
2010-06-30	2250
2010-09-30	2088
2010-12-31	2292
2011-03-31	2964
2011-06-30	2424
2011-09-30	2500
2011-12-31	1840
2012-03-31	1167
2012-06-30	1054
2012-09-30	1256
2012-12-31	1521
2013-03-31	1000
2013-06-30	878
2013-09-30	1070
2013-12-31	932
2014-03-31	1422
2014-06-30	1154
2014-09-30	631
2014-12-31	796
2015-03-31	601
2015-06-30	283
2015-09-30	450
2015-12-31	520
2016-03-31	53
2016-06-30	416
2016-09-30	366
2016-12-31	306
2017-03-31	434
2017-06-30	442
2017-09-30	389
2017-12-31	218
2018-03-31	804
2018-06-30	1295
2018-09-30	763
2018-12-31	179
2019-03-31	706
2019-06-30	970
2019-09-30	604
2019-12-31	1176
2020-03-31	1204
2020-06-30	1136
2020-09-30	604
2020-12-31	246
2021-03-31	211
2021-06-30	-643
2021-09-30	-337
2021-12-31	-276
2022-03-31	-307
2022-06-30	-136
2022-09-30	5
2022-12-31	-28
2023-03-31	-572
2023-06-30	-254
2023-09-30	-88