Quarter	US dollars
2004-12-31	-4
2005-03-31	-6
2005-06-30	22
2005-09-30	-4
2005-12-31	-12
2006-03-31	-10
2006-06-30	-17
2006-09-30	-11
2006-12-31	-12
2007-03-31	-12
2007-06-30	-54
2007-09-30	-45
2007-12-31	-82
2008-03-31	-109
2008-06-30	-171
2008-09-30	-221
2008-12-31	-451
2009-03-31	-89
2009-06-30	-64
2009-09-30	-64
2009-12-31	-69
2010-03-31	-96
2010-06-30	-215
2010-09-30	-183
2010-12-31	-376
2011-03-31	-250
2011-06-30	-368
2011-09-30	-603
2011-12-31	-605
2012-03-31	-414
2012-06-30	-416
2012-09-30	-376
2012-12-31	-346
2013-03-31	-386
2013-06-30	-390
2013-09-30	-366
2013-12-31	-616
2014-03-31	-519
2014-06-30	-509
2014-09-30	-511
2014-12-31	-595
2015-03-31	-684
2015-06-30	-642
2015-09-30	-456
2015-12-31	-378
2016-03-31	-342
2016-06-30	-330
2016-09-30	-251
2016-12-31	-212
2017-03-31	-169
2017-06-30	-190
2017-09-30	-101
2017-12-31	-50
2018-03-31	-48
2018-06-30	-32
2018-09-30	-46
2018-12-31	-37
2019-03-31	-36
2019-06-30	-25
2019-09-30	-30
2019-12-31	-25
2020-03-31	-56
2020-06-30	-37
2020-09-30	-52
2020-12-31	-49
2021-03-31	-43
2021-06-30	-15
2021-09-30	-23
2021-12-31	-27
2022-03-31	-42
2022-06-30	-30
2022-09-30	-48
2022-12-31	-20
2023-03-31	-9
2023-06-30	-13
2023-09-30	-39