Quarter	US dollars
2004-12-31	530
2005-03-31	1164
2005-06-30	801
2005-09-30	1091
2005-12-31	695
2006-03-31	1110
2006-06-30	1038
2006-09-30	1508
2006-12-31	1523
2007-03-31	1522
2007-06-30	1294
2007-09-30	452
2007-12-31	874
2008-03-31	906
2008-06-30	519
2008-09-30	959
2008-12-31	863
2009-03-31	258
2009-06-30	38
2009-09-30	-170
2009-12-31	-87
2010-03-31	-696
2010-06-30	-1146
2010-09-30	-736
2010-12-31	-391
2011-03-31	-1050
2011-06-30	-1304
2011-09-30	-470
2011-12-31	-662
2012-03-31	-337
2012-06-30	-71
2012-09-30	-150
2012-12-31	-142
2013-03-31	-222
2013-06-30	56
2013-09-30	-416
2013-12-31	-494
2014-03-31	-504
2014-06-30	-159
2014-09-30	-232
2014-12-31	-331
2015-03-31	-123
2015-06-30	-646
2015-09-30	-92
2015-12-31	-860
2016-03-31	-733
2016-06-30	-184
2016-09-30	-39
2016-12-31	20
2017-03-31	53
2017-06-30	-286
2017-09-30	-225
2017-12-31	-343
2018-03-31	-726
2018-06-30	-557
2018-09-30	-867
2018-12-31	-1300
2019-03-31	-554
2019-06-30	-760
2019-09-30	-662
2019-12-31	-649
2020-03-31	-977
2020-06-30	-775
2020-09-30	-261
2020-12-31	-270
2021-03-31	-142
2021-06-30	-420
2021-09-30	-156
2021-12-31	-132
2022-03-31	-120
2022-06-30	-112
2022-09-30	-94
2022-12-31	-316
2023-03-31	-239
2023-06-30	-173
2023-09-30	-280