Quarter	US dollars
2004-12-31	2
2005-03-31	4
2005-06-30	4
2005-09-30	4
2005-12-31	5
2006-03-31	-5
2006-06-30	13
2006-09-30	13
2006-12-31	-22
2007-03-31	-24
2007-06-30	-38
2007-09-30	8
2007-12-31	6
2008-03-31	-147
2008-06-30	-229
2008-09-30	-29
2008-12-31	-33
2009-03-31	-258
2009-06-30	-161
2009-09-30	-32
2009-12-31	-61
2010-03-31	-32
2010-06-30	-16
2010-09-30	-372
2010-12-31	-335
2011-03-31	-362
2011-06-30	-372
2011-09-30	-388
2011-12-31	-363
2012-03-31	-305
2012-06-30	-259
2012-09-30	-236
2012-12-31	24
2013-03-31	27
2013-06-30	26
2013-09-30	15
2013-12-31	10
2014-03-31	10
2014-06-30	3
2014-09-30	0
2014-12-31	-393
2015-03-31	-7
2015-06-30	-2
2015-09-30	-3
2015-12-31	0
2016-03-31	-1
2016-06-30	3
2016-09-30	1
2016-12-31	1
2017-03-31	0
2017-06-30	-35
2017-09-30	-1
2017-12-31	5
2018-03-31	0
2018-06-30	0
2018-09-30	-4
2018-12-31	-1
2019-03-31	-1
2019-06-30	-1
2019-09-30	-2
2019-12-31	-3
2020-03-31	0
2020-06-30	-6
2020-09-30	-6
2020-12-31	-7
2021-03-31	-3
2021-06-30	-6
2021-09-30	-7
2021-12-31	-7
2022-03-31	-8
2022-06-30	-6
2022-09-30	-5
2022-12-31	-5
2023-03-31	-2
2023-06-30	-3
2023-09-30	-3