Quarter	US dollars
2004-12-31	0
2005-03-31	25
2005-06-30	0
2005-09-30	0
2005-12-31	14
2006-03-31	12
2006-06-30	39
2006-09-30	77
2006-12-31	76
2007-03-31	110
2007-06-30	173
2007-09-30	418
2007-12-31	229
2008-03-31	175
2008-06-30	167
2008-09-30	132
2008-12-31	175
2009-03-31	169
2009-06-30	142
2009-09-30	216
2009-12-31	258
2010-03-31	554
2010-06-30	432
2010-09-30	896
2010-12-31	1302
2011-03-31	1348
2011-06-30	682
2011-09-30	643
2011-12-31	843
2012-03-31	1402
2012-06-30	1161
2012-09-30	722
2012-12-31	1466
2013-03-31	871
2013-06-30	708
2013-09-30	703
2013-12-31	555
2014-03-31	323
2014-06-30	349
2014-09-30	318
2014-12-31	465
2015-03-31	450
2015-06-30	626
2015-09-30	898
2015-12-31	806
2016-03-31	746
2016-06-30	376
2016-09-30	381
2016-12-31	348
2017-03-31	441
2017-06-30	492
2017-09-30	488
2017-12-31	507
2018-03-31	521
2018-06-30	433
2018-09-30	442
2018-12-31	469
2019-03-31	525
2019-06-30	449
2019-09-30	466
2019-12-31	456
2020-03-31	411
2020-06-30	743
2020-09-30	580
2020-12-31	610
2021-03-31	1215
2021-06-30	905
2021-09-30	814
2021-12-31	1013
2022-03-31	909
2022-06-30	816
2022-09-30	1022
2022-12-31	640
2023-03-31	464
2023-06-30	693
2023-09-30	481