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	-91
2008-06-30	-40
2008-09-30	-7
2008-12-31	-9
2009-03-31	0
2009-06-30	-18
2009-09-30	-38
2009-12-31	-19
2010-03-31	-12
2010-06-30	-3
2010-09-30	-3
2010-12-31	0
2011-03-31	0
2011-06-30	0
2011-09-30	5
2011-12-31	3
2012-03-31	3
2012-06-30	2
2012-09-30	2
2012-12-31	2
2013-03-31	0
2013-06-30	-2
2013-09-30	-2
2013-12-31	2
2014-03-31	-2
2014-06-30	-7
2014-09-30	-5
2014-12-31	-6
2015-03-31	-7
2015-06-30	-3
2015-09-30	-6
2015-12-31	-3
2016-03-31	-6
2016-06-30	-8
2016-09-30	-4
2016-12-31	-1
2017-03-31	-3
2017-06-30	-3
2017-09-30	0
2017-12-31	0
2018-03-31	0
2018-06-30	0
2018-09-30	-3
2018-12-31	0
2019-03-31	-4
2019-06-30	-1
2019-09-30	0
2019-12-31	-3
2020-03-31	-2
2020-06-30	-5
2020-09-30	-3
2020-12-31	-7
2021-03-31	-25
2021-06-30	-35
2021-09-30	-51
2021-12-31	-5
2022-03-31	-8
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0