Quarter	US dollars
2004-12-31	0
2005-03-31	2
2005-06-30	2
2005-09-30	0
2005-12-31	0
2006-03-31	2
2006-06-30	4
2006-09-30	24
2006-12-31	23
2007-03-31	25
2007-06-30	24
2007-09-30	31
2007-12-31	24
2008-03-31	24
2008-06-30	22
2008-09-30	4
2008-12-31	4
2009-03-31	1
2009-06-30	2
2009-09-30	3
2009-12-31	3
2010-03-31	2
2010-06-30	3
2010-09-30	3
2010-12-31	3
2011-03-31	3
2011-06-30	3
2011-09-30	3
2011-12-31	3
2012-03-31	5
2012-06-30	3
2012-09-30	3
2012-12-31	3
2013-03-31	3
2013-06-30	5
2013-09-30	5
2013-12-31	5
2014-03-31	8
2014-06-30	10
2014-09-30	10
2014-12-31	9
2015-03-31	10
2015-06-30	13
2015-09-30	2
2015-12-31	1
2016-03-31	1
2016-06-30	0
2016-09-30	0
2016-12-31	0
2017-03-31	0
2017-06-30	0
2017-09-30	0
2017-12-31	4
2018-03-31	69
2018-06-30	66
2018-09-30	67
2018-12-31	73
2019-03-31	72
2019-06-30	64
2019-09-30	64
2019-12-31	63
2020-03-31	63
2020-06-30	62
2020-09-30	63
2020-12-31	61
2021-03-31	61
2021-06-30	0
2021-09-30	0
2021-12-31	0
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