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	35
2006-09-30	34
2006-12-31	14
2007-03-31	-2
2007-06-30	0
2007-09-30	-8
2007-12-31	-16
2008-03-31	-16
2008-06-30	-8
2008-09-30	-7
2008-12-31	0
2009-03-31	0
2009-06-30	0
2009-09-30	0
2009-12-31	0
2010-03-31	-3
2010-06-30	-3
2010-09-30	-3
2010-12-31	-2
2011-03-31	-3
2011-06-30	-24
2011-09-30	8
2011-12-31	2
2012-03-31	66
2012-06-30	64
2012-09-30	13
2012-12-31	42
2013-03-31	46
2013-06-30	17
2013-09-30	40
2013-12-31	45
2014-03-31	82
2014-06-30	92
2014-09-30	63
2014-12-31	64
2015-03-31	28
2015-06-30	38
2015-09-30	53
2015-12-31	41
2016-03-31	27
2016-06-30	12
2016-09-30	44
2016-12-31	28
2017-03-31	-3
2017-06-30	-34
2017-09-30	-47
2017-12-31	-32
2018-03-31	-4
2018-06-30	1
2018-09-30	7
2018-12-31	-10
2019-03-31	-1
2019-06-30	19
2019-09-30	44
2019-12-31	8
2020-03-31	0
2020-06-30	7
2020-09-30	0
2020-12-31	-5
2021-03-31	-11
2021-06-30	-12
2021-09-30	-12
2021-12-31	-7
2022-03-31	9
2022-06-30	-6
2022-09-30	-16
2022-12-31	-13
2023-03-31	-11
2023-06-30	-5
2023-09-30	-15