Quarter	US dollars
2004-12-31	-12
2005-03-31	-13
2005-06-30	-11
2005-09-30	-53
2005-12-31	-65
2006-03-31	-71
2006-06-30	-87
2006-09-30	-58
2006-12-31	-57
2007-03-31	-41
2007-06-30	-50
2007-09-30	-51
2007-12-31	-46
2008-03-31	-52
2008-06-30	-54
2008-09-30	-45
2008-12-31	-49
2009-03-31	-49
2009-06-30	-48
2009-09-30	-48
2009-12-31	-50
2010-03-31	-44
2010-06-30	-45
2010-09-30	-44
2010-12-31	-44
2011-03-31	-40
2011-06-30	-42
2011-09-30	-26
2011-12-31	-45
2012-03-31	-50
2012-06-30	-50
2012-09-30	279
2012-12-31	369
2013-03-31	99
2013-06-30	152
2013-09-30	521
2013-12-31	544
2014-03-31	-3
2014-06-30	-7
2014-09-30	-6
2014-12-31	-12
2015-03-31	-10
2015-06-30	-5
2015-09-30	-6
2015-12-31	-4
2016-03-31	-9
2016-06-30	-8
2016-09-30	-5
2016-12-31	-1
2017-03-31	-1
2017-06-30	-17
2017-09-30	-17
2017-12-31	-23
2018-03-31	-131
2018-06-30	-148
2018-09-30	-116
2018-12-31	-120
2019-03-31	-117
2019-06-30	-120
2019-09-30	-111
2019-12-31	-115
2020-03-31	-112
2020-06-30	-114
2020-09-30	-110
2020-12-31	-112
2021-03-31	-155
2021-06-30	0
2021-09-30	-39
2021-12-31	-39
2022-03-31	-39
2022-06-30	-40
2022-09-30	-40
2022-12-31	-40
2023-03-31	-41
2023-06-30	-41
2023-09-30	-41