Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	-2
2005-12-31	-2
2006-03-31	-2
2006-06-30	-2
2006-09-30	-11
2006-12-31	-18
2007-03-31	-16
2007-06-30	-10
2007-09-30	-14
2007-12-31	-28
2008-03-31	-46
2008-06-30	-30
2008-09-30	-32
2008-12-31	-76
2009-03-31	-97
2009-06-30	-63
2009-09-30	-75
2009-12-31	-53
2010-03-31	-82
2010-06-30	-115
2010-09-30	-150
2010-12-31	-64
2011-03-31	-99
2011-06-30	-69
2011-09-30	-114
2011-12-31	-105
2012-03-31	-105
2012-06-30	-111
2012-09-30	-142
2012-12-31	-146
2013-03-31	-153
2013-06-30	-65
2013-09-30	-79
2013-12-31	-117
2014-03-31	328
2014-06-30	315
2014-09-30	282
2014-12-31	265
2015-03-31	200
2015-06-30	-215
2015-09-30	-221
2015-12-31	-210
2016-03-31	-224
2016-06-30	-431
2016-09-30	-216
2016-12-31	-244
2017-03-31	-208
2017-06-30	-209
2017-09-30	-140
2017-12-31	-169
2018-03-31	-163
2018-06-30	-209
2018-09-30	-168
2018-12-31	-167
2019-03-31	-229
2019-06-30	-307
2019-09-30	-480
2019-12-31	-363
2020-03-31	-833
2020-06-30	-826
2020-09-30	-778
2020-12-31	-651
2021-03-31	-475
2021-06-30	-439
2021-09-30	-456
2021-12-31	-340
2022-03-31	-100
2022-06-30	-162
2022-09-30	-45
2022-12-31	-1
2023-03-31	0
2023-06-30	-1
2023-09-30	-107