Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	-16
2005-12-31	-5
2006-03-31	0
2006-06-30	26
2006-09-30	32
2006-12-31	0
2007-03-31	27
2007-06-30	28
2007-09-30	0
2007-12-31	0
2008-03-31	2
2008-06-30	-2
2008-09-30	-20
2008-12-31	-127
2009-03-31	7
2009-06-30	12
2009-09-30	-8
2009-12-31	13
2010-03-31	11
2010-06-30	12
2010-09-30	-47
2010-12-31	-166
2011-03-31	0
2011-06-30	-42
2011-09-30	-182
2011-12-31	-199
2012-03-31	-197
2012-06-30	-215
2012-09-30	-444
2012-12-31	-349
2013-03-31	-322
2013-06-30	-300
2013-09-30	-188
2013-12-31	-159
2014-03-31	-160
2014-06-30	-161
2014-09-30	-149
2014-12-31	-145
2015-03-31	-134
2015-06-30	-219
2015-09-30	-51
2015-12-31	-52
2016-03-31	-52
2016-06-30	-52
2016-09-30	-52
2016-12-31	-52
2017-03-31	-53
2017-06-30	-65
2017-09-30	-64
2017-12-31	-115
2018-03-31	-63
2018-06-30	-65
2018-09-30	-46
2018-12-31	-34
2019-03-31	-12
2019-06-30	0
2019-09-30	0
2019-12-31	0
2020-03-31	0
2020-06-30	-1
2020-09-30	0
2020-12-31	0
2021-03-31	1
2021-06-30	1
2021-09-30	1
2021-12-31	1
2022-03-31	0
2022-06-30	0
2022-09-30	-10
2022-12-31	1
2023-03-31	0
2023-06-30	-51
2023-09-30	-30