Quarter	US dollars
2004-12-31	2
2005-03-31	2
2005-06-30	4
2005-09-30	2
2005-12-31	-21
2006-03-31	-16
2006-06-30	-17
2006-09-30	-21
2006-12-31	-10
2007-03-31	-6
2007-06-30	-8
2007-09-30	-10
2007-12-31	-8
2008-03-31	-2
2008-06-30	-6
2008-09-30	-11
2008-12-31	-10
2009-03-31	-9
2009-06-30	-26
2009-09-30	-26
2009-12-31	-27
2010-03-31	-30
2010-06-30	-28
2010-09-30	-32
2010-12-31	-36
2011-03-31	-34
2011-06-30	-35
2011-09-30	-14
2011-12-31	-12
2012-03-31	-14
2012-06-30	-30
2012-09-30	-11
2012-12-31	-11
2013-03-31	-11
2013-06-30	-9
2013-09-30	-8
2013-12-31	-18
2014-03-31	-27
2014-06-30	26
2014-09-30	-29
2014-12-31	-28
2015-03-31	-18
2015-06-30	-36
2015-09-30	-38
2015-12-31	-33
2016-03-31	-39
2016-06-30	-47
2016-09-30	-43
2016-12-31	-34
2017-03-31	-21
2017-06-30	-18
2017-09-30	-42
2017-12-31	-73
2018-03-31	-51
2018-06-30	-30
2018-09-30	-26
2018-12-31	-50
2019-03-31	-52
2019-06-30	-34
2019-09-30	-5
2019-12-31	-37
2020-03-31	-30
2020-06-30	0
2020-09-30	-37
2020-12-31	-53
2021-03-31	-40
2021-06-30	-25
2021-09-30	-32
2021-12-31	-22
2022-03-31	0
2022-06-30	0
2022-09-30	-40
2022-12-31	-66
2023-03-31	-48
2023-06-30	-30
2023-09-30	-43