Quarter	US dollars
2004-12-31	-52
2005-03-31	-161
2005-06-30	-149
2005-09-30	-267
2005-12-31	-357
2006-03-31	-444
2006-06-30	-399
2006-09-30	-400
2006-12-31	-348
2007-03-31	-465
2007-06-30	-500
2007-09-30	-564
2007-12-31	-512
2008-03-31	-527
2008-06-30	-466
2008-09-30	-558
2008-12-31	-643
2009-03-31	-1026
2009-06-30	-955
2009-09-30	-848
2009-12-31	-904
2010-03-31	-983
2010-06-30	-673
2010-09-30	-1119
2010-12-31	-989
2011-03-31	-949
2011-06-30	-422
2011-09-30	-413
2011-12-31	-312
2012-03-31	-238
2012-06-30	-318
2012-09-30	-359
2012-12-31	-380
2013-03-31	-336
2013-06-30	-488
2013-09-30	-526
2013-12-31	-550
2014-03-31	-467
2014-06-30	-480
2014-09-30	-504
2014-12-31	-432
2015-03-31	-471
2015-06-30	-469
2015-09-30	-463
2015-12-31	-390
2016-03-31	-493
2016-06-30	-419
2016-09-30	-404
2016-12-31	-372
2017-03-31	-341
2017-06-30	-5
2017-09-30	-4
2017-12-31	-5
2018-03-31	-32
2018-06-30	-33
2018-09-30	-31
2018-12-31	-32
2019-03-31	-30
2019-06-30	-1
2019-09-30	-2
2019-12-31	-9
2020-03-31	0
2020-06-30	0
2020-09-30	0
2020-12-31	-4
2021-03-31	-33
2021-06-30	-3
2021-09-30	-43
2021-12-31	-42
2022-03-31	-39
2022-06-30	-1
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	-79