Quarter	US dollars
2004-12-31	-6
2005-03-31	-2
2005-06-30	-2
2005-09-30	-2
2005-12-31	0
2006-03-31	0
2006-06-30	15
2006-09-30	0
2006-12-31	0
2007-03-31	24
2007-06-30	-2
2007-09-30	-12
2007-12-31	-24
2008-03-31	-95
2008-06-30	-62
2008-09-30	-62
2008-12-31	-76
2009-03-31	-33
2009-06-30	-12
2009-09-30	-26
2009-12-31	-18
2010-03-31	-14
2010-06-30	-24
2010-09-30	-19
2010-12-31	-14
2011-03-31	-8
2011-06-30	-11
2011-09-30	-16
2011-12-31	-19
2012-03-31	-11
2012-06-30	-9
2012-09-30	-10
2012-12-31	-11
2013-03-31	-12
2013-06-30	-14
2013-09-30	-15
2013-12-31	-30
2014-03-31	-92
2014-06-30	-31
2014-09-30	-36
2014-12-31	-31
2015-03-31	-6
2015-06-30	-6
2015-09-30	-42
2015-12-31	-40
2016-03-31	-45
2016-06-30	-39
2016-09-30	-47
2016-12-31	-34
2017-03-31	-108
2017-06-30	-101
2017-09-30	-123
2017-12-31	-116
2018-03-31	-140
2018-06-30	-118
2018-09-30	-91
2018-12-31	-120
2019-03-31	-150
2019-06-30	-151
2019-09-30	-286
2019-12-31	-211
2020-03-31	-505
2020-06-30	-460
2020-09-30	-412
2020-12-31	-315
2021-03-31	-235
2021-06-30	-271
2021-09-30	-294
2021-12-31	-249
2022-03-31	-193
2022-06-30	-199
2022-09-30	-246
2022-12-31	-93
2023-03-31	-106
2023-06-30	-100
2023-09-30	-78