Quarter	US dollars
2004-12-31	6
2005-03-31	13
2005-06-30	5
2005-09-30	7
2005-12-31	3
2006-03-31	5
2006-06-30	7
2006-09-30	7
2006-12-31	10
2007-03-31	8
2007-06-30	8
2007-09-30	10
2007-12-31	8
2008-03-31	8
2008-06-30	8
2008-09-30	9
2008-12-31	7
2009-03-31	7
2009-06-30	8
2009-09-30	11
2009-12-31	16
2010-03-31	11
2010-06-30	18
2010-09-30	11
2010-12-31	11
2011-03-31	10
2011-06-30	8
2011-09-30	8
2011-12-31	8
2012-03-31	8
2012-06-30	8
2012-09-30	8
2012-12-31	10
2013-03-31	8
2013-06-30	9
2013-09-30	8
2013-12-31	15
2014-03-31	12
2014-06-30	15
2014-09-30	19
2014-12-31	11
2015-03-31	13
2015-06-30	13
2015-09-30	11
2015-12-31	12
2016-03-31	9
2016-06-30	24
2016-09-30	16
2016-12-31	15
2017-03-31	6
2017-06-30	19
2017-09-30	19
2017-12-31	19
2018-03-31	18
2018-06-30	41
2018-09-30	26
2018-12-31	27
2019-03-31	21
2019-06-30	19
2019-09-30	42
2019-12-31	67
2020-03-31	78
2020-06-30	10
2020-09-30	9
2020-12-31	10
2021-03-31	8
2021-06-30	10
2021-09-30	11
2021-12-31	7
2022-03-31	20
2022-06-30	21
2022-09-30	37
2022-12-31	17
2023-03-31	15
2023-06-30	22
2023-09-30	9