Quarter	US dollars
2004-12-31	-8
2005-03-31	8
2005-06-30	36
2005-09-30	9
2005-12-31	3
2006-03-31	2
2006-06-30	-9
2006-09-30	15
2006-12-31	12
2007-03-31	-14
2007-06-30	-293
2007-09-30	-187
2007-12-31	-273
2008-03-31	-378
2008-06-30	-444
2008-09-30	-458
2008-12-31	-868
2009-03-31	-460
2009-06-30	-438
2009-09-30	-277
2009-12-31	-275
2010-03-31	-317
2010-06-30	-498
2010-09-30	-518
2010-12-31	-1461
2011-03-31	-487
2011-06-30	-578
2011-09-30	-724
2011-12-31	-728
2012-03-31	-531
2012-06-30	-515
2012-09-30	-481
2012-12-31	-598
2013-03-31	-645
2013-06-30	-463
2013-09-30	-449
2013-12-31	-881
2014-03-31	-1049
2014-06-30	-1079
2014-09-30	-1132
2014-12-31	-1917
2015-03-31	-1814
2015-06-30	-1527
2015-09-30	-971
2015-12-31	-762
2016-03-31	-579
2016-06-30	-764
2016-09-30	-598
2016-12-31	-520
2017-03-31	-710
2017-06-30	-599
2017-09-30	-428
2017-12-31	-218
2018-03-31	182
2018-06-30	112
2018-09-30	51
2018-12-31	54
2019-03-31	-149
2019-06-30	-243
2019-09-30	-411
2019-12-31	-431
2020-03-31	-971
2020-06-30	-807
2020-09-30	-871
2020-12-31	-676
2021-03-31	-388
2021-06-30	-311
2021-09-30	-681
2021-12-31	-601
2022-03-31	-211
2022-06-30	-213
2022-09-30	-198
2022-12-31	-169
2023-03-31	-47
2023-06-30	-55
2023-09-30	-67