Quarter	US dollars
2004-12-31	63
2005-03-31	60
2005-06-30	36
2005-09-30	12
2005-12-31	26
2006-03-31	17
2006-06-30	63
2006-09-30	77
2006-12-31	43
2007-03-31	33
2007-06-30	58
2007-09-30	18
2007-12-31	28
2008-03-31	22
2008-06-30	38
2008-09-30	14
2008-12-31	6
2009-03-31	4
2009-06-30	20
2009-09-30	6
2009-12-31	15
2010-03-31	0
2010-06-30	-9
2010-09-30	-39
2010-12-31	-13
2011-03-31	-5
2011-06-30	-6
2011-09-30	2
2011-12-31	5
2012-03-31	8
2012-06-30	9
2012-09-30	19
2012-12-31	21
2013-03-31	5
2013-06-30	5
2013-09-30	6
2013-12-31	7
2014-03-31	7
2014-06-30	34
2014-09-30	36
2014-12-31	11
2015-03-31	-6
2015-06-30	-19
2015-09-30	-2
2015-12-31	-9
2016-03-31	9
2016-06-30	7
2016-09-30	6
2016-12-31	5
2017-03-31	-8
2017-06-30	-6
2017-09-30	12
2017-12-31	27
2018-03-31	13
2018-06-30	-12
2018-09-30	8
2018-12-31	1
2019-03-31	-3
2019-06-30	23
2019-09-30	-5
2019-12-31	8
2020-03-31	4
2020-06-30	0
2020-09-30	-6
2020-12-31	8
2021-03-31	12
2021-06-30	-14
2021-09-30	11
2021-12-31	-8
2022-03-31	9
2022-06-30	-11
2022-09-30	11
2022-12-31	-3
2023-03-31	6
2023-06-30	-11
2023-09-30	9