Quarter	US dollars
2004-12-31	-8
2005-03-31	-6
2005-06-30	0
2005-09-30	-7
2005-12-31	0
2006-03-31	-10
2006-06-30	-2
2006-09-30	-21
2006-12-31	-22
2007-03-31	-31
2007-06-30	-16
2007-09-30	-20
2007-12-31	-56
2008-03-31	-48
2008-06-30	-62
2008-09-30	-50
2008-12-31	-36
2009-03-31	-32
2009-06-30	-40
2009-09-30	-29
2009-12-31	-34
2010-03-31	-30
2010-06-30	-31
2010-09-30	-2
2010-12-31	-16
2011-03-31	10
2011-06-30	8
2011-09-30	-2
2011-12-31	-5
2012-03-31	-3
2012-06-30	-5
2012-09-30	-3
2012-12-31	-3
2013-03-31	-8
2013-06-30	-3
2013-09-30	-3
2013-12-31	-5
2014-03-31	-3
2014-06-30	-3
2014-09-30	-3
2014-12-31	-3
2015-03-31	-3
2015-06-30	-2
2015-09-30	0
2015-12-31	0
2016-03-31	-1
2016-06-30	-3
2016-09-30	1
2016-12-31	0
2017-03-31	0
2017-06-30	-3
2017-09-30	-38
2017-12-31	-50
2018-03-31	-264
2018-06-30	-119
2018-09-30	-81
2018-12-31	-82
2019-03-31	-77
2019-06-30	-75
2019-09-30	-95
2019-12-31	-86
2020-03-31	-76
2020-06-30	-52
2020-09-30	-66
2020-12-31	-61
2021-03-31	-69
2021-06-30	-62
2021-09-30	-63
2021-12-31	-115
2022-03-31	-101
2022-06-30	-98
2022-09-30	-92
2022-12-31	-96
2023-03-31	-99
2023-06-30	-140
2023-09-30	-140