Quarter	US dollars
2004-12-31	15
2005-03-31	17
2005-06-30	16
2005-09-30	18
2005-12-31	9
2006-03-31	5
2006-06-30	2
2006-09-30	2
2006-12-31	22
2007-03-31	6
2007-06-30	14
2007-09-30	6
2007-12-31	6
2008-03-31	6
2008-06-30	24
2008-09-30	30
2008-12-31	17
2009-03-31	19
2009-06-30	21
2009-09-30	3
2009-12-31	8
2010-03-31	11
2010-06-30	15
2010-09-30	11
2010-12-31	14
2011-03-31	13
2011-06-30	14
2011-09-30	9
2011-12-31	9
2012-03-31	8
2012-06-30	9
2012-09-30	8
2012-12-31	8
2013-03-31	9
2013-06-30	9
2013-09-30	11
2013-12-31	30
2014-03-31	28
2014-06-30	31
2014-09-30	29
2014-12-31	23
2015-03-31	22
2015-06-30	16
2015-09-30	14
2015-12-31	9
2016-03-31	3
2016-06-30	1
2016-09-30	3
2016-12-31	2
2017-03-31	3
2017-06-30	1
2017-09-30	4
2017-12-31	7
2018-03-31	10
2018-06-30	3
2018-09-30	5
2018-12-31	3
2019-03-31	1
2019-06-30	71
2019-09-30	63
2019-12-31	33
2020-03-31	36
2020-06-30	38
2020-09-30	3
2020-12-31	3
2021-03-31	1
2021-06-30	3
2021-09-30	1
2021-12-31	1
2022-03-31	17
2022-06-30	1
2022-09-30	3
2022-12-31	0
2023-03-31	2
2023-06-30	0
2023-09-30	2