Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	0
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	0
2006-12-31	0
2007-03-31	0
2007-06-30	0
2007-09-30	0
2007-12-31	0
2008-03-31	0
2008-06-30	0
2008-09-30	-14
2008-12-31	-12
2009-03-31	-11
2009-06-30	-12
2009-09-30	-10
2009-12-31	-6
2010-03-31	50
2010-06-30	46
2010-09-30	44
2010-12-31	9
2011-03-31	21
2011-06-30	21
2011-09-30	50
2011-12-31	-2
2012-03-31	-2
2012-06-30	-2
2012-09-30	-19
2012-12-31	-8
2013-03-31	0
2013-06-30	0
2013-09-30	0
2013-12-31	0
2014-03-31	0
2014-06-30	0
2014-09-30	0
2014-12-31	-3
2015-03-31	-1
2015-06-30	0
2015-09-30	0
2015-12-31	0
2016-03-31	0
2016-06-30	0
2016-09-30	0
2016-12-31	1
2017-03-31	1
2017-06-30	3
2017-09-30	3
2017-12-31	1
2018-03-31	1
2018-06-30	1
2018-09-30	0
2018-12-31	1
2019-03-31	3
2019-06-30	-52
2019-09-30	-42
2019-12-31	-28
2020-03-31	-21
2020-06-30	-64
2020-09-30	-66
2020-12-31	-63
2021-03-31	-59
2021-06-30	-36
2021-09-30	-34
2021-12-31	-34
2022-03-31	-68
2022-06-30	-28
2022-09-30	-25
2022-12-31	-91
2023-03-31	-35
2023-06-30	-38
2023-09-30	-5