Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	4
2005-09-30	5
2005-12-31	0
2006-03-31	0
2006-06-30	-2
2006-09-30	2
2006-12-31	0
2007-03-31	294
2007-06-30	0
2007-09-30	2
2007-12-31	-20
2008-03-31	-22
2008-06-30	-22
2008-09-30	-23
2008-12-31	-3
2009-03-31	-3
2009-06-30	0
2009-09-30	0
2009-12-31	0
2010-03-31	-420
2010-06-30	-515
2010-09-30	-203
2010-12-31	-147
2011-03-31	-99
2011-06-30	-112
2011-09-30	-67
2011-12-31	-20
2012-03-31	-29
2012-06-30	-30
2012-09-30	-21
2012-12-31	23
2013-03-31	18
2013-06-30	21
2013-09-30	31
2013-12-31	43
2014-03-31	37
2014-06-30	44
2014-09-30	305
2014-12-31	297
2015-03-31	295
2015-06-30	28
2015-09-30	27
2015-12-31	27
2016-03-31	27
2016-06-30	7
2016-09-30	8
2016-12-31	7
2017-03-31	23
2017-06-30	22
2017-09-30	21
2017-12-31	24
2018-03-31	4
2018-06-30	5
2018-09-30	13
2018-12-31	14
2019-03-31	16
2019-06-30	15
2019-09-30	18
2019-12-31	17
2020-03-31	22
2020-06-30	27
2020-09-30	52
2020-12-31	5
2021-03-31	6
2021-06-30	6
2021-09-30	5
2021-12-31	-1
2022-03-31	-3
2022-06-30	-2
2022-09-30	-6
2022-12-31	-6
2023-03-31	-7
2023-06-30	-8
2023-09-30	-7