Quarter	US dollars
2004-12-31	56
2005-03-31	57
2005-06-30	50
2005-09-30	50
2005-12-31	43
2006-03-31	45
2006-06-30	43
2006-09-30	37
2006-12-31	29
2007-03-31	25
2007-06-30	24
2007-09-30	22
2007-12-31	26
2008-03-31	28
2008-06-30	70
2008-09-30	64
2008-12-31	63
2009-03-31	63
2009-06-30	53
2009-09-30	50
2009-12-31	50
2010-03-31	50
2010-06-30	49
2010-09-30	52
2010-12-31	33
2011-03-31	6
2011-06-30	6
2011-09-30	11
2011-12-31	100
2012-03-31	3
2012-06-30	5
2012-09-30	100
2014-03-31	38
2014-06-30	36
2014-09-30	32
2014-12-31	36
2015-03-31	39
2015-06-30	27
2015-09-30	55
2015-12-31	124
2016-03-31	58
2016-06-30	90
2016-09-30	78
2016-12-31	116
2017-03-31	66
2017-06-30	42
2017-09-30	46
2017-12-31	30
2018-03-31	62
2018-06-30	40
2018-09-30	14
2018-12-31	57
2019-03-31	20
2019-06-30	3
2019-09-30	0
2019-12-31	11
2020-03-31	20
2020-06-30	12
2020-09-30	12
2020-12-31	11
2021-03-31	8
2021-06-30	10
2021-09-30	5
2021-12-31	16
2022-03-31	5
2022-06-30	8
2022-09-30	5
2022-12-31	9
2023-03-31	7
2023-06-30	6
2023-09-30	19