Quarter	US dollars
2004-12-31	-23
2005-03-31	-17
2005-06-30	-11
2005-09-30	-7
2005-12-31	-26
2006-03-31	-19
2006-06-30	-18
2006-09-30	-11
2006-12-31	0
2007-03-31	-24
2007-06-30	-14
2007-09-30	-8
2007-12-31	0
2008-03-31	24
2008-06-30	-34
2008-09-30	-285
2008-12-31	-283
2009-03-31	4
2009-06-30	13
2009-09-30	0
2009-12-31	-100
2010-03-31	-100
2010-06-30	-1
2010-09-30	0
2010-12-31	-31
2011-03-31	0
2011-06-30	0
2011-09-30	0
2011-12-31	0
2012-03-31	0
2012-06-30	-19
2012-09-30	-57
2012-12-31	-103
2013-03-31	-178
2013-06-30	-170
2013-09-30	-42
2013-12-31	-15
2014-03-31	-45
2014-06-30	-15
2014-09-30	-21
2014-12-31	-14
2015-03-31	0
2015-06-30	-6
2015-09-30	-3
2015-12-31	0
2016-03-31	-1
2016-06-30	0
2016-09-30	0
2016-12-31	0
2017-03-31	-1
2017-06-30	-1
2017-09-30	0
2017-12-31	0
2018-03-31	0
2018-06-30	-1
2018-09-30	0
2018-12-31	0
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	-204
2020-12-31	-203
2021-03-31	0
2021-06-30	0
2021-09-30	0
2021-12-31	0
2022-03-31	0
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0