Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	9
2005-09-30	-5
2005-12-31	2
2006-03-31	3
2006-06-30	2
2006-09-30	2
2006-12-31	31
2007-03-31	33
2007-06-30	26
2007-09-30	18
2007-12-31	30
2008-03-31	20
2008-06-30	18
2008-09-30	21
2008-12-31	14
2009-03-31	0
2009-06-30	0
2009-09-30	0
2009-12-31	0
2010-03-31	0
2010-06-30	0
2010-09-30	0
2010-12-31	0
2011-03-31	0
2011-06-30	0
2011-09-30	0
2011-12-31	0
2012-03-31	0
2012-06-30	0
2012-09-30	0
2012-12-31	13
2013-03-31	-12
2013-06-30	21
2013-09-30	-6
2013-12-31	-10
2014-03-31	-10
2014-06-30	-10
2014-09-30	52
2014-12-31	30
2015-03-31	37
2015-06-30	36
2015-09-30	15
2015-12-31	12
2016-03-31	12
2016-06-30	7
2016-09-30	6
2016-12-31	7
2017-03-31	9
2017-06-30	5
2017-09-30	-8
2017-12-31	0
2018-03-31	0
2018-06-30	0
2018-09-30	0
2018-12-31	0
2019-03-31	0
2019-06-30	0
2019-09-30	0
2019-12-31	1
2020-03-31	0
2020-06-30	0
2020-09-30	-27
2020-12-31	-12
2021-03-31	-11
2021-06-30	0
2021-09-30	0
2021-12-31	0
2022-03-31	0
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	-11