Quarter	US dollars
2004-12-31	-13
2005-03-31	-11
2005-06-30	-16
2005-09-30	2
2005-12-31	-17
2006-03-31	-12
2006-06-30	-15
2006-09-30	-11
2006-12-31	-14
2007-03-31	0
2007-06-30	2
2007-09-30	2
2007-12-31	-26
2008-03-31	0
2008-06-30	-30
2008-09-30	0
2008-12-31	0
2009-03-31	0
2009-06-30	0
2009-09-30	0
2009-12-31	0
2010-03-31	0
2010-06-30	-4
2010-09-30	-5
2010-12-31	-5
2011-03-31	-5
2011-06-30	0
2011-09-30	0
2011-12-31	39
2012-03-31	0
2012-06-30	0
2012-09-30	0
2012-12-31	-5
2013-03-31	-458
2013-06-30	-453
2013-09-30	-259
2013-12-31	-491
2014-03-31	-482
2014-06-30	-484
2014-09-30	-259
2014-12-31	-460
2015-03-31	-447
2015-06-30	-462
2015-09-30	-242
2015-12-31	-448
2016-03-31	0
2016-06-30	0
2016-09-30	0
2016-12-31	-10
2017-03-31	-10
2017-06-30	-47
2017-09-30	-47
2017-12-31	-55
2018-03-31	-49
2018-06-30	-58
2018-09-30	-46
2018-12-31	-68
2019-03-31	-185
2019-06-30	-148
2019-09-30	-85
2019-12-31	-83
2020-03-31	-82
2020-06-30	-79
2020-09-30	-140
2020-12-31	-74
2021-03-31	-39
2021-06-30	-40
2021-09-30	-46
2021-12-31	-23
2022-03-31	-24
2022-06-30	-23
2022-09-30	-17
2022-12-31	8
2023-03-31	-36
2023-06-30	24
2023-09-30	-20