Quarter	US dollars
2004-12-31	0
2005-03-31	-2
2005-06-30	5
2005-09-30	0
2005-12-31	-22
2006-03-31	-19
2006-06-30	0
2006-09-30	13
2006-12-31	0
2007-03-31	0
2007-06-30	-34
2007-09-30	-41
2007-12-31	-18
2008-03-31	6
2008-06-30	6
2008-09-30	14
2008-12-31	17
2009-03-31	21
2009-06-30	7
2009-09-30	5
2009-12-31	-2
2010-03-31	0
2010-06-30	-1
2010-09-30	6
2010-12-31	8
2011-03-31	11
2011-06-30	18
2011-09-30	12
2011-12-31	93
2012-03-31	10
2012-06-30	14
2012-09-30	0
2012-12-31	23
2013-03-31	52
2013-06-30	21
2013-09-30	262
2013-12-31	-3
2014-03-31	-5
2014-06-30	53
2014-09-30	31
2014-12-31	27
2015-03-31	21
2015-06-30	33
2015-09-30	0
2015-12-31	0
2016-03-31	0
2016-06-30	0
2016-09-30	0
2016-12-31	0
2017-03-31	0
2017-06-30	0
2017-09-30	-1
2017-12-31	-14
2018-03-31	-7
2018-06-30	-5
2018-09-30	-7
2018-12-31	-3
2019-03-31	0
2019-06-30	0
2019-09-30	0
2019-12-31	0
2020-03-31	0
2020-06-30	0
2020-09-30	0
2020-12-31	0
2021-03-31	0
2021-06-30	4
2021-09-30	3
2021-12-31	-1
2022-03-31	0
2022-06-30	4
2022-09-30	0
2022-12-31	1
2023-03-31	1
2023-06-30	0
2023-09-30	0