Quarter	US dollars
2004-12-31	4
2005-03-31	6
2005-06-30	11
2005-09-30	14
2005-12-31	69
2006-03-31	10
2006-06-30	20
2006-09-30	17
2006-12-31	41
2007-03-31	37
2007-06-30	36
2007-09-30	33
2007-12-31	20
2008-03-31	22
2008-06-30	14
2008-09-30	29
2008-12-31	40
2009-03-31	49
2009-06-30	38
2009-09-30	43
2009-12-31	40
2010-03-31	30
2010-06-30	45
2010-09-30	14
2010-12-31	16
2011-03-31	13
2011-06-30	8
2011-09-30	6
2011-12-31	8
2012-03-31	10
2012-06-30	8
2012-09-30	8
2012-12-31	10
2013-03-31	6
2013-06-30	5
2013-09-30	6
2013-12-31	5
2014-03-31	5
2014-06-30	5
2014-09-30	3
2014-12-31	5
2015-03-31	1
2015-06-30	2
2015-09-30	2
2015-12-31	1
2016-03-31	1
2016-06-30	3
2016-09-30	0
2016-12-31	0
2017-03-31	0
2017-06-30	0
2017-09-30	0
2017-12-31	0
2018-03-31	0
2018-06-30	0
2018-09-30	0
2018-12-31	0
2019-03-31	1
2019-06-30	1
2019-09-30	4
2019-12-31	3
2020-03-31	6
2020-06-30	2
2020-09-30	4
2020-12-31	4
2021-03-31	1
2021-06-30	65
2021-09-30	63
2021-12-31	62
2022-03-31	72
2022-06-30	63
2022-09-30	3
2022-12-31	3
2023-03-31	3
2023-06-30	2
2023-09-30	3