Quarter	US dollars
2004-12-31	4
2005-03-31	8
2005-06-30	5
2005-09-30	5
2005-12-31	5
2006-03-31	31
2006-06-30	26
2006-09-30	22
2006-12-31	27
2007-03-31	2
2007-06-30	38
2007-09-30	2
2007-12-31	44
2008-03-31	50
2008-06-30	44
2008-09-30	16
2008-12-31	10
2009-03-31	10
2009-06-30	28
2009-09-30	11
2009-12-31	11
2010-03-31	8
2010-06-30	7
2010-09-30	5
2010-12-31	6
2011-03-31	37
2011-06-30	35
2011-09-30	22
2011-12-31	42
2012-03-31	69
2012-06-30	35
2012-09-30	111
2012-12-31	52
2013-03-31	53
2013-06-30	23
2013-09-30	6
2013-12-31	86
2014-03-31	83
2014-06-30	109
2014-09-30	52
2014-12-31	48
2015-03-31	73
2015-06-30	28
2015-09-30	21
2015-12-31	19
2016-03-31	3
2016-06-30	12
2016-09-30	12
2016-12-31	57
2017-03-31	6
2017-06-30	34
2017-09-30	150
2017-12-31	92
2018-03-31	98
2018-06-30	66
2018-09-30	56
2018-12-31	47
2019-03-31	47
2019-06-30	47
2019-09-30	57
2019-12-31	24
2020-03-31	46
2020-06-30	30
2020-09-30	30
2020-12-31	31
2021-03-31	34
2021-06-30	123
2021-09-30	89
2021-12-31	97
2022-03-31	72
2022-06-30	30
2022-09-30	38
2022-12-31	39
2023-03-31	41
2023-06-30	35
2023-09-30	19