Quarter	US dollars
2004-12-31	323
2005-03-31	168
2005-06-30	79
2005-09-30	94
2005-12-31	232
2006-03-31	316
2006-06-30	351
2006-09-30	361
2006-12-31	481
2007-03-31	467
2007-06-30	461
2007-09-30	387
2007-12-31	380
2008-03-31	380
2008-06-30	356
2008-09-30	326
2008-12-31	334
2009-03-31	340
2009-06-30	423
2009-09-30	392
2009-12-31	336
2010-03-31	235
2010-06-30	241
2010-09-30	165
2010-12-31	188
2011-03-31	197
2011-06-30	180
2011-09-30	190
2011-12-31	167
2012-03-31	110
2012-06-30	152
2012-09-30	160
2012-12-31	162
2013-03-31	152
2013-06-30	126
2013-09-30	125
2013-12-31	175
2014-03-31	142
2014-06-30	128
2014-09-30	151
2014-12-31	148
2015-03-31	190
2015-06-30	148
2015-09-30	147
2015-12-31	144
2016-03-31	70
2016-06-30	67
2016-09-30	65
2016-12-31	129
2017-03-31	63
2017-06-30	57
2017-09-30	38
2017-12-31	39
2018-03-31	18
2018-06-30	61
2018-09-30	43
2018-12-31	32
2019-03-31	33
2019-06-30	71
2019-09-30	53
2019-12-31	65
2020-03-31	47
2020-06-30	53
2020-09-30	5
2020-12-31	35
2021-03-31	4
2021-06-30	6
2021-09-30	8
2021-12-31	66
2022-03-31	67
2022-06-30	67
2022-09-30	65
2022-12-31	65
2023-03-31	65
2023-06-30	64
2023-09-30	64