Quarter	US dollars
2004-12-31	-23
2005-03-31	-34
2005-06-30	-27
2005-09-30	-62
2005-12-31	-19
2006-03-31	-57
2006-06-30	-18
2006-09-30	-13
2006-12-31	-14
2007-03-31	-4
2007-06-30	10
2007-09-30	18
2007-12-31	16
2008-03-31	20
2008-06-30	26
2008-09-30	18
2008-12-31	19
2009-03-31	16
2009-06-30	30
2009-09-30	27
2009-12-31	24
2010-03-31	18
2010-06-30	12
2010-09-30	16
2010-12-31	17
2011-03-31	19
2011-06-30	18
2011-09-30	12
2011-12-31	2
2012-03-31	5
2012-06-30	3
2012-09-30	13
2012-12-31	6
2013-03-31	3
2013-06-30	-18
2013-09-30	6
2013-12-31	-10
2014-03-31	-18
2014-06-30	-31
2014-09-30	-34
2014-12-31	-36
2015-03-31	-22
2015-06-30	-17
2015-09-30	-18
2015-12-31	-19
2016-03-31	-22
2016-06-30	-12
2016-09-30	-14
2016-12-31	-12
2017-03-31	-13
2017-06-30	-14
2017-09-30	-4
2017-12-31	-7
2018-03-31	-8
2018-06-30	-1
2018-09-30	-3
2018-12-31	-1
2019-03-31	-1
2019-06-30	-1
2019-09-30	0
2019-12-31	0
2020-03-31	-1
2020-06-30	-1
2020-09-30	0
2020-12-31	0
2021-03-31	-1
2021-06-30	-1
2021-09-30	3
2021-12-31	1
2022-03-31	3
2022-06-30	2
2022-09-30	2
2022-12-31	1
2023-03-31	2
2023-06-30	4
2023-09-30	4