Quarter	US dollars
2004-12-31	0
2005-03-31	-2
2005-06-30	2
2005-09-30	0
2005-12-31	2
2006-03-31	-219
2006-06-30	-222
2006-09-30	-887
2006-12-31	-249
2007-03-31	-55
2007-06-30	-56
2007-09-30	-67
2007-12-31	-82
2008-03-31	-20
2008-06-30	-103
2008-09-30	-105
2008-12-31	-115
2009-03-31	-120
2009-06-30	-105
2009-09-30	-115
2009-12-31	-170
2010-03-31	-223
2010-06-30	-88
2010-09-30	74
2010-12-31	-9
2011-03-31	-6
2011-06-30	-3
2011-09-30	2
2011-12-31	2
2012-03-31	2
2012-06-30	2
2012-09-30	2
2012-12-31	0
2013-03-31	0
2013-06-30	0
2013-09-30	0
2013-12-31	0
2014-03-31	25
2014-06-30	26
2014-09-30	15
2014-12-31	8
2015-03-31	4
2015-06-30	5
2015-09-30	5
2015-12-31	4
2016-03-31	4
2016-06-30	4
2016-09-30	6
2016-12-31	4
2017-03-31	4
2017-06-30	3
2017-09-30	3
2017-12-31	3
2018-03-31	3
2018-06-30	3
2018-09-30	1
2018-12-31	1
2019-03-31	1
2019-06-30	1
2019-09-30	1
2019-12-31	1
2020-03-31	1
2020-06-30	1
2020-09-30	1
2020-12-31	1
2021-03-31	1
2021-06-30	1
2021-09-30	3
2021-12-31	0
2022-03-31	0
2022-06-30	1
2022-09-30	0
2022-12-31	3
2023-03-31	0
2023-06-30	0
2023-09-30	4