Quarter	US dollars
2004-12-31	8
2005-03-31	11
2005-06-30	11
2005-09-30	12
2005-12-31	10
2006-03-31	12
2006-06-30	22
2006-09-30	15
2006-12-31	16
2007-03-31	16
2007-06-30	8
2007-09-30	12
2007-12-31	8
2008-03-31	6
2008-06-30	10
2008-09-30	7
2008-12-31	6
2009-03-31	6
2009-06-30	20
2009-09-30	18
2009-12-31	11
2010-03-31	8
2010-06-30	24
2010-09-30	30
2010-12-31	58
2011-03-31	26
2011-06-30	26
2011-09-30	23
2011-12-31	25
2012-03-31	18
2012-06-30	25
2012-09-30	8
2012-12-31	10
2013-03-31	20
2013-06-30	24
2013-09-30	18
2013-12-31	7
2014-03-31	7
2014-06-30	21
2014-09-30	21
2014-12-31	28
2015-03-31	24
2015-06-30	17
2015-09-30	17
2015-12-31	1
2016-03-31	10
2016-06-30	0
2016-09-30	1
2016-12-31	1
2017-03-31	1
2017-06-30	0
2017-09-30	0
2017-12-31	0
2018-03-31	0
2018-06-30	1
2018-09-30	1
2018-12-31	1
2019-03-31	1
2019-06-30	1
2019-09-30	0
2019-12-31	0
2020-03-31	0
2020-06-30	0
2020-09-30	0
2020-12-31	0
2021-03-31	0
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