Quarter	US dollars
2004-12-31	21
2005-03-31	25
2005-06-30	30
2005-09-30	28
2005-12-31	19
2006-03-31	42
2006-06-30	85
2006-09-30	92
2006-12-31	53
2007-03-31	75
2007-06-30	70
2007-09-30	61
2007-12-31	58
2008-03-31	66
2008-06-30	62
2008-09-30	66
2008-12-31	49
2009-03-31	44
2009-06-30	35
2009-09-30	37
2009-12-31	36
2010-03-31	534
2010-06-30	530
2010-09-30	1503
2010-12-31	164
2011-09-30	665
2011-12-31	513
2012-03-31	476
2012-06-30	381
2012-09-30	181
2012-12-31	129
2013-03-31	182
2013-06-30	109
2013-09-30	130
2013-12-31	183
2014-03-31	137
2014-06-30	99
2014-09-30	104
2014-12-31	72
2015-03-31	53
2015-06-30	58
2015-09-30	83
2015-12-31	79
2016-03-31	72
2016-06-30	-7
2016-09-30	74
2016-12-31	107
2017-03-31	108
2017-06-30	160
2017-09-30	142
2017-12-31	136
2018-03-31	157
2018-06-30	162
2018-09-30	145
2018-12-31	152
2019-03-31	158
2019-06-30	172
2019-09-30	152
2019-12-31	165
2020-03-31	130
2020-06-30	120
2020-09-30	124
2020-12-31	132
2021-03-31	119
2021-06-30	135
2021-09-30	119
2021-12-31	77
2022-03-31	117
2022-06-30	97
2022-09-30	99
2022-12-31	106
2023-03-31	92
2023-06-30	84
2023-09-30	76