Quarter	US dollars
2004-12-31	-46
2005-03-31	-11
2005-06-30	-7
2005-09-30	16
2005-12-31	10
2006-03-31	5
2006-06-30	4
2006-09-30	2
2006-12-31	-14
2007-03-31	261
2007-06-30	-96
2007-09-30	-90
2007-12-31	-38
2008-03-31	36
2008-06-30	-163
2008-09-30	-110
2008-12-31	32
2009-03-31	14
2009-06-30	-13
2009-09-30	5
2009-12-31	-13
2010-03-31	14
2010-06-30	90
2010-09-30	98
2010-12-31	39
2011-03-31	53
2011-06-30	42
2011-09-30	97
2011-12-31	100
2012-03-31	42
2012-06-30	67
2012-09-30	58
2012-12-31	-36
2013-03-31	39
2013-06-30	-18
2013-09-30	6
2013-12-31	-61
2014-03-31	-248
2014-06-30	-168
2014-09-30	-280
2014-12-31	-464
2015-03-31	-579
2015-06-30	-373
2015-09-30	-336
2015-12-31	-325
2016-03-31	-523
2016-06-30	-87
2016-09-30	-91
2016-12-31	-75
2017-03-31	-75
2017-06-30	-82
2017-09-30	-106
2017-12-31	-96
2018-03-31	-138
2018-06-30	-317
2018-09-30	-507
2018-12-31	-368
2019-03-31	-285
2019-06-30	-221
2019-09-30	-233
2019-12-31	-199
2020-03-31	-468
2020-06-30	-383
2020-09-30	-398
2020-12-31	-390
2021-03-31	-468
2021-06-30	-438
2021-09-30	-409
2021-12-31	-507
2022-03-31	-633
2022-06-30	-715
2022-09-30	-720
2022-12-31	-769
2023-03-31	-586
2023-06-30	-509
2023-09-30	-575