Quarter	US dollars
2004-12-31	-29
2005-03-31	-21
2005-06-30	-20
2005-09-30	-18
2005-12-31	-12
2006-03-31	-29
2006-06-30	-20
2006-09-30	-15
2006-12-31	-16
2007-03-31	-43
2007-06-30	-112
2007-09-30	-92
2007-12-31	-94
2008-03-31	-99
2008-06-30	-111
2008-09-30	-289
2008-12-31	-505
2009-03-31	-330
2009-06-30	-422
2009-09-30	-403
2009-12-31	-270
2010-03-31	-332
2010-06-30	-331
2010-09-30	-479
2010-12-31	-329
2011-03-31	-401
2011-06-30	-397
2011-09-30	-366
2011-12-31	-450
2012-03-31	-334
2012-06-30	-422
2012-09-30	-451
2012-12-31	-365
2013-03-31	-358
2013-06-30	-256
2013-09-30	-348
2013-12-31	-212
2014-03-31	-427
2014-06-30	-320
2014-09-30	-376
2014-12-31	-473
2015-03-31	-883
2015-06-30	-793
2015-09-30	-762
2015-12-31	-774
2016-03-31	-653
2016-06-30	-628
2016-09-30	-626
2016-12-31	-698
2017-03-31	-644
2017-06-30	-496
2017-09-30	-357
2017-12-31	-123
2018-03-31	-98
2018-06-30	-164
2018-09-30	-100
2018-12-31	-179
2019-03-31	-173
2019-06-30	-83
2019-09-30	-277
2019-12-31	-145
2020-03-31	-670
2020-06-30	-185
2020-09-30	-120
2020-12-31	-87
2021-03-31	-236
2021-06-30	-253
2021-09-30	-154
2021-12-31	-158
2022-03-31	-143
2022-06-30	-354
2022-09-30	-584
2022-12-31	-287
2023-03-31	-187
2023-06-30	-192
2023-09-30	-184