Quarter	US dollars
2004-12-31	584
2005-03-31	633
2005-06-30	556
2005-09-30	506
2005-12-31	458
2006-03-31	501
2006-06-30	697
2006-09-30	736
2006-12-31	979
2007-03-31	788
2007-06-30	883
2007-09-30	846
2007-12-31	313
2008-03-31	380
2008-06-30	408
2008-09-30	905
2008-12-31	536
2009-03-31	401
2009-06-30	275
2009-09-30	366
2009-12-31	379
2010-03-31	391
2010-06-30	652
2010-09-30	610
2010-12-31	747
2011-03-31	829
2011-06-30	856
2011-09-30	576
2011-12-31	567
2012-03-31	591
2012-06-30	456
2012-09-30	501
2012-12-31	467
2013-03-31	307
2013-06-30	403
2013-09-30	319
2013-12-31	245
2014-03-31	210
2014-06-30	243
2014-09-30	470
2014-12-31	312
2015-03-31	144
2015-06-30	138
2015-09-30	117
2015-12-31	82
2016-03-31	76
2016-06-30	77
2016-09-30	77
2016-12-31	64
2017-03-31	61
2017-06-30	60
2017-09-30	67
2017-12-31	54
2018-03-31	46
2018-06-30	33
2018-09-30	34
2018-12-31	31
2019-03-31	22
2019-06-30	22
2019-09-30	18
2019-12-31	15
2020-03-31	15
2020-06-30	14
2020-09-30	12
2020-12-31	11
2021-03-31	10
2021-06-30	11
2021-09-30	23
2021-12-31	162
2022-03-31	176
2022-06-30	166
2022-09-30	5
2022-12-31	24
2023-03-31	5
2023-06-30	4
2023-09-30	4