Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	0
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	2
2006-12-31	2
2007-03-31	4
2007-06-30	4
2007-09-30	4
2008-12-31	4
2009-09-30	3
2010-06-30	1
2010-09-30	0
2010-12-31	0
2014-09-30	2
2014-12-31	2
2015-03-31	1
2015-06-30	2
2015-09-30	2
2015-12-31	1
2016-03-31	1
2016-06-30	1
2016-09-30	1
2016-12-31	1
2017-03-31	1
2017-06-30	1
2017-09-30	1
2017-12-31	1
2018-03-31	0
2018-06-30	1
2018-09-30	4
2018-12-31	1
2019-03-31	1
2019-06-30	5
2019-09-30	0
2019-12-31	3
2020-03-31	1
2020-06-30	1
2020-09-30	5
2020-12-31	3
2021-03-31	-3
2021-06-30	1
2021-09-30	1
2021-12-31	1
2022-03-31	0
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0