Quarter	US dollars
2004-12-31	-4
2005-03-31	-8
2005-06-30	-7
2005-09-30	-5
2005-12-31	-7
2006-03-31	-21
2006-06-30	-26
2006-09-30	-35
2006-12-31	-37
2007-03-31	-47
2007-06-30	-173
2007-09-30	-238
2007-12-31	-219
2008-03-31	-276
2008-06-30	-328
2008-09-30	-182
2008-12-31	-181
2009-03-31	-142
2009-06-30	-183
2009-09-30	-144
2009-12-31	-144
2010-03-31	-144
2010-06-30	-142
2010-09-30	-49
2010-12-31	-42
2011-03-31	-38
2011-06-30	-31
2011-09-30	-47
2011-12-31	-40
2012-03-31	-21
2012-06-30	-31
2012-09-30	-37
2012-12-31	-29
2013-03-31	-30
2013-06-30	-32
2013-09-30	-19
2013-12-31	-20
2014-03-31	-37
2014-06-30	-89
2014-09-30	-94
2014-12-31	-117
2015-03-31	-108
2015-06-30	-104
2015-09-30	-80
2015-12-31	-96
2016-03-31	-81
2016-06-30	-109
2016-09-30	-86
2016-12-31	-79
2017-03-31	-73
2017-06-30	-29
2017-09-30	-30
2017-12-31	-30
2018-03-31	-32
2018-06-30	-30
2018-09-30	-29
2018-12-31	-46
2019-03-31	0
2019-06-30	0
2019-09-30	-33
2019-12-31	-33
2020-03-31	-33
2020-06-30	-35
2020-09-30	-31
2020-12-31	-30
2021-03-31	-30
2021-06-30	-29
2021-09-30	-55
2021-12-31	-69
2022-03-31	-88
2022-06-30	-95
2022-09-30	-87
2022-12-31	-75
2023-03-31	-67
2023-06-30	-103
2023-09-30	-103