Quarter	US dollars
2004-12-31	8
2005-03-31	2
2005-06-30	4
2005-09-30	-2
2005-12-31	2
2006-03-31	-3
2006-06-30	-4
2006-09-30	-2
2006-12-31	-2
2007-03-31	41
2007-06-30	243
2007-09-30	163
2007-12-31	211
2008-03-31	256
2008-06-30	281
2008-09-30	171
2008-12-31	79
2009-03-31	49
2009-06-30	69
2009-09-30	70
2009-12-31	-399
2010-03-31	-319
2010-06-30	-582
2010-09-30	-98
2010-12-31	-269
2011-03-31	-321
2011-06-30	-289
2011-09-30	-156
2011-12-31	26
2012-03-31	-29
2012-06-30	-24
2012-09-30	-18
2012-12-31	5
2013-03-31	5
2013-06-30	5
2013-09-30	3
2013-12-31	3
2014-03-31	3
2014-06-30	3
2014-09-30	3
2014-12-31	11
2015-03-31	-3
2015-06-30	2
2015-09-30	6
2015-12-31	-6
2016-03-31	-6
2016-06-30	-3
2016-09-30	-4
2016-12-31	-4
2017-03-31	58
2017-06-30	49
2017-09-30	60
2017-12-31	65
2018-03-31	81
2018-06-30	74
2018-09-30	95
2018-12-31	97
2019-03-31	108
2019-06-30	104
2019-09-30	105
2019-12-31	102
2020-03-31	108
2020-06-30	110
2020-09-30	4
2020-12-31	-97
2021-03-31	-58
2021-06-30	-1
2021-09-30	-23
2021-12-31	-22
2022-03-31	-42
2022-06-30	-68
2022-09-30	-38
2022-12-31	-37
2023-03-31	-38
2023-06-30	-50
2023-09-30	-50