Quarter	US dollars
2004-12-31	-12
2005-03-31	-15
2005-06-30	-13
2005-09-30	-14
2005-12-31	-5
2006-03-31	-29
2006-06-30	-41
2006-09-30	-56
2006-12-31	-23
2007-03-31	-61
2007-06-30	-84
2007-09-30	-96
2007-12-31	-94
2008-03-31	-101
2008-06-30	-103
2008-09-30	-94
2008-12-31	-98
2009-03-31	-93
2009-06-30	-97
2009-09-30	-35
2009-12-31	-39
2010-03-31	-33
2010-06-30	-129
2010-09-30	-14
2010-12-31	-27
2011-03-31	-11
2011-06-30	-64
2011-09-30	-12
2011-12-31	-22
2012-03-31	-24
2012-06-30	-22
2012-09-30	-21
2012-12-31	-3
2013-03-31	-2
2013-06-30	-5
2013-09-30	0
2013-12-31	2
2014-03-31	2
2014-06-30	0
2014-09-30	0
2014-12-31	2
2015-03-31	0
2015-06-30	2
2015-09-30	0
2015-12-31	0
2016-03-31	1
2016-06-30	1
2016-09-30	0
2016-12-31	0
2017-03-31	1
2017-06-30	-17
2017-09-30	1
2017-12-31	-54
2018-03-31	-45
2018-06-30	-44
2018-09-30	-43
2018-12-31	-45
2019-03-31	1
2019-06-30	1
2019-09-30	1
2019-12-31	-1
2020-03-31	0
2020-06-30	0
2020-09-30	-35
2020-12-31	-45
2021-03-31	-41
2021-06-30	-41
2021-09-30	-44
2021-12-31	-46
2022-03-31	-49
2022-06-30	-43
2022-09-30	-39
2022-12-31	-43
2023-03-31	-45
2023-06-30	-43
2023-09-30	-43