Quarter	US dollars
2004-12-31	4
2005-03-31	11
2005-06-30	22
2005-09-30	11
2005-12-31	24
2006-03-31	19
2006-06-30	22
2006-09-30	351
2006-12-31	47
2007-03-31	35
2007-06-30	34
2007-09-30	18
2007-12-31	32
2008-03-31	85
2008-06-30	86
2008-09-30	77
2008-12-31	106
2009-03-31	62
2009-06-30	58
2009-09-30	42
2009-12-31	32
2010-03-31	26
2010-06-30	39
2010-09-30	24
2010-12-31	19
2011-03-31	27
2011-06-30	18
2011-09-30	41
2011-12-31	39
2012-03-31	42
2012-06-30	55
2012-09-30	40
2012-12-31	34
2013-03-31	18
2013-06-30	32
2013-09-30	52
2013-12-31	61
2014-03-31	58
2014-06-30	84
2014-09-30	285
2014-12-31	312
2015-03-31	94
2015-06-30	88
2015-09-30	77
2015-12-31	83
2016-03-31	152
2016-06-30	275
2016-09-30	305
2016-12-31	300
2017-03-31	200
2017-06-30	223
2017-09-30	177
2017-12-31	193
2018-03-31	222
2018-06-30	199
2018-09-30	246
2018-12-31	227
2019-03-31	274
2019-06-30	202
2019-09-30	219
2019-12-31	273
2020-03-31	190
2020-06-30	252
2020-09-30	235
2020-12-31	273
2021-03-31	327
2021-06-30	307
2021-09-30	220
2021-12-31	163
2022-03-31	178
2022-06-30	117
2022-09-30	156
2022-12-31	139
2023-03-31	145
2023-06-30	107
2023-09-30	55