Quarter	US dollars
2004-12-31	2532
2005-03-31	2342
2005-06-30	2382
2005-09-30	2126
2005-12-31	2652
2006-03-31	3143
2006-06-30	3965
2006-09-30	3729
2006-12-31	4031
2007-03-31	3413
2007-06-30	3252
2007-09-30	3920
2007-12-31	3783
2008-03-31	3476
2008-06-30	4169
2008-09-30	2233
2008-12-31	1580
2009-03-31	1668
2009-06-30	1729
2009-09-30	1729
2009-12-31	1460
2010-03-31	1263
2010-06-30	-142
2010-09-30	-158
2010-12-31	-17
2011-03-31	-46
2011-06-30	-191
2011-09-30	-100
2011-12-31	-274
2012-03-31	-112
2012-06-30	-147
2012-09-30	-84
2012-12-31	144
2013-03-31	436
2013-06-30	485
2013-09-30	0
2013-12-31	613
2014-03-31	590
2014-06-30	544
2014-09-30	203
2014-12-31	-94
2015-03-31	-359
2015-06-30	-220
2015-09-30	-220
2015-12-31	-245
2016-03-31	-216
2016-06-30	-207
2016-09-30	-251
2016-12-31	-432
2017-03-31	-441
2017-06-30	-305
2017-09-30	-209
2017-12-31	-203
2018-03-31	-49
2018-06-30	-147
2018-09-30	-230
2018-12-31	-260
2019-03-31	-255
2019-06-30	-322
2019-09-30	60
2019-12-31	100
2020-03-31	91
2020-06-30	235
2020-09-30	88
2020-12-31	1
2021-03-31	-65
2021-06-30	-10
2021-09-30	-12
2021-12-31	-11
2022-03-31	-18
2022-06-30	8
2022-09-30	5
2022-12-31	3
2023-03-31	-27
2023-06-30	-367
2023-09-30	-364