Quarter	US dollars
2004-12-31	-6
2005-03-31	-4
2005-06-30	-2
2005-09-30	-2
2005-12-31	-31
2006-03-31	-29
2006-06-30	-346
2006-09-30	-499
2006-12-31	-843
2007-03-31	-1457
2007-06-30	-3359
2007-09-30	-3464
2007-12-31	-2749
2008-03-31	-2705
2008-06-30	-2342
2008-09-30	-1016
2008-12-31	-775
2009-03-31	-714
2009-06-30	-718
2009-09-30	-566
2009-12-31	-593
2010-03-31	-579
2010-06-30	-901
2010-09-30	-405
2010-12-31	-260
2011-03-31	-123
2011-06-30	-128
2011-09-30	-125
2011-12-31	-54
2012-03-31	-42
2012-06-30	-41
2012-09-30	-37
2012-12-31	131
2013-03-31	0
2013-06-30	0
2013-09-30	-57
2013-12-31	-53
2014-03-31	35
2014-06-30	-31
2014-09-30	-21
2014-12-31	-20
2015-03-31	-19
2015-06-30	-49
2015-09-30	-18
2015-12-31	-12
2016-03-31	-9
2016-06-30	-7
2016-09-30	3
2016-12-31	-10
2017-03-31	-28
2017-06-30	-29
2017-09-30	-44
2017-12-31	-19
2018-03-31	-42
2018-06-30	-3
2018-09-30	-3
2018-12-31	-3
2019-03-31	-3
2019-06-30	-3
2019-09-30	-2
2019-12-31	-3
2020-03-31	1
2020-06-30	1
2020-09-30	1
2020-12-31	1
2021-03-31	1
2021-06-30	1
2021-09-30	1
2021-12-31	1
2022-03-31	1
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0