Quarter	US dollars
2004-12-31	278
2005-03-31	295
2005-06-30	265
2005-09-30	359
2005-12-31	360
2006-03-31	385
2006-06-30	459
2006-09-30	390
2006-12-31	339
2007-03-31	384
2007-06-30	457
2007-09-30	513
2007-12-31	536
2008-03-31	582
2008-06-30	593
2008-09-30	568
2008-12-31	418
2009-03-31	404
2009-06-30	417
2009-09-30	385
2009-12-31	441
2010-03-31	452
2010-06-30	379
2010-09-30	392
2010-12-31	396
2011-03-31	388
2011-06-30	413
2011-09-30	455
2011-12-31	541
2012-03-31	598
2012-06-30	814
2012-09-30	617
2013-03-31	583
2013-06-30	701
2014-03-31	862
2014-06-30	643
2014-09-30	850
2014-12-31	779
2015-03-31	578
2015-06-30	522
2015-09-30	451
2015-12-31	456
2016-03-31	487
2016-06-30	518
2016-09-30	501
2016-12-31	373
2017-03-31	429
2017-06-30	890
2017-09-30	1020
2017-12-31	966
2018-03-31	975
2018-06-30	960
2018-09-30	895
2018-12-31	964
2019-03-31	913
2019-06-30	1076
2019-09-30	903
2019-12-31	806
2020-03-31	646
2020-06-30	481
2020-09-30	447
2020-12-31	340
2021-03-31	390
2021-06-30	354
2021-09-30	357
2021-12-31	329
2022-03-31	329
2022-06-30	328
2022-09-30	334
2022-12-31	365
2023-03-31	386
2023-06-30	658
2023-09-30	671