Quarter	US dollars
2004-12-31	6
2005-03-31	6
2005-06-30	4
2005-09-30	2
2005-12-31	2
2006-03-31	2
2006-06-30	4
2006-09-30	6
2006-12-31	6
2007-03-31	6
2007-06-30	6
2007-09-30	4
2007-12-31	8
2008-03-31	8
2008-06-30	8
2008-09-30	12
2008-12-31	4
2009-03-31	4
2009-06-30	7
2009-09-30	6
2009-12-31	6
2010-03-31	6
2010-06-30	37
2010-09-30	33
2010-12-31	50
2011-03-31	6
2011-06-30	21
2011-09-30	3
2011-12-31	5
2012-03-31	5
2012-06-30	5
2012-09-30	5
2012-12-31	5
2013-03-31	6
2013-06-30	12
2013-09-30	3
2013-12-31	3
2014-03-31	7
2014-06-30	7
2014-09-30	6
2014-12-31	6
2015-03-31	7
2015-06-30	2
2015-09-30	3
2015-12-31	3
2016-03-31	6
2016-06-30	5
2016-09-30	5
2016-12-31	4
2017-03-31	4
2017-06-30	4
2017-09-30	4
2017-12-31	5
2018-03-31	11
2018-06-30	8
2018-09-30	5
2018-12-31	4
2019-03-31	5
2019-06-30	4
2019-09-30	2
2019-12-31	26
2020-03-31	10
2020-06-30	7
2020-09-30	4
2020-12-31	4
2021-03-31	17
2021-06-30	6
2021-09-30	0
2021-12-31	4
2022-03-31	0
2022-06-30	-4
2022-09-30	3
2022-12-31	14
2023-03-31	4
2023-06-30	3
2023-09-30	2