Quarter	US dollars
2004-12-31	150
2005-03-31	151
2005-06-30	147
2005-09-30	164
2005-12-31	163
2006-03-31	163
2006-06-30	207
2006-09-30	243
2006-12-31	252
2007-03-31	284
2007-06-30	309
2007-09-30	328
2007-12-31	344
2008-03-31	553
2008-06-30	549
2008-09-30	510
2008-12-31	388
2009-03-31	387
2009-06-30	422
2009-09-30	461
2009-12-31	430
2010-03-31	397
2010-06-30	353
2010-09-30	362
2010-12-31	385
2011-03-31	357
2011-06-30	406
2011-09-30	407
2011-12-31	374
2012-03-31	406
2012-06-30	402
2012-09-30	481
2012-12-31	514
2013-03-31	468
2013-06-30	473
2013-09-30	546
2013-12-31	479
2014-03-31	490
2014-06-30	540
2014-09-30	473
2014-12-31	485
2015-03-31	416
2015-06-30	503
2015-09-30	423
2015-12-31	384
2016-03-31	338
2016-06-30	325
2016-09-30	314
2016-12-31	293
2017-03-31	295
2017-06-30	58
2017-09-30	59
2017-12-31	70
2018-03-31	52
2018-06-30	37
2018-09-30	42
2018-12-31	32
2019-03-31	30
2019-06-30	27
2019-09-30	44
2019-12-31	73
2020-03-31	72
2020-06-30	53
2020-09-30	45
2020-12-31	42
2021-03-31	61
2021-06-30	57
2021-09-30	58
2021-12-31	49
2022-03-31	38
2022-06-30	21
2022-09-30	19
2022-12-31	18
2023-03-31	19
2023-06-30	18
2023-09-30	27