Quarter	US dollars
2004-12-31	4
2005-03-31	-2
2005-06-30	-13
2005-09-30	0
2005-12-31	-12
2006-03-31	-49
2006-06-30	-141
2006-09-30	-159
2006-12-31	-106
2007-03-31	-210
2007-06-30	-205
2007-09-30	-365
2007-12-31	-197
2008-03-31	-926
2008-06-30	-1108
2008-09-30	-1057
2008-12-31	68
2009-03-31	89
2009-06-30	20
2009-09-30	-32
2009-12-31	-396
2010-03-31	3
2010-06-30	-7
2010-09-30	184
2010-12-31	2
2011-03-31	136
2011-06-30	5
2011-09-30	8
2011-12-31	8
2012-03-31	19
2012-06-30	16
2012-09-30	44
2012-12-31	-74
2013-03-31	-182
2013-06-30	-14
2013-09-30	-28
2013-12-31	-74
2014-03-31	-232
2014-06-30	-116
2014-09-30	-92
2014-12-31	-76
2015-03-31	325
2015-06-30	208
2015-09-30	115
2015-12-31	233
2016-03-31	221
2016-06-30	230
2016-09-30	223
2016-12-31	234
2017-03-31	231
2017-06-30	209
2017-09-30	211
2017-12-31	204
2018-03-31	100
2018-06-30	186
2018-09-30	171
2018-12-31	102
2019-03-31	138
2019-06-30	182
2019-09-30	190
2019-12-31	157
2020-03-31	238
2020-06-30	269
2020-09-30	269
2020-12-31	250
2021-03-31	182
2021-06-30	198
2021-09-30	162
2021-12-31	164
2022-03-31	182
2022-06-30	156
2022-09-30	-294
2022-12-31	108
2023-03-31	36
2023-06-30	34
2023-09-30	-4