Quarter	US dollars
2004-12-31	23
2005-03-31	23
2005-06-30	4
2005-09-30	4
2005-12-31	3
2006-03-31	3
2006-06-30	2
2006-09-30	2
2006-12-31	2
2007-03-31	2
2007-06-30	8
2007-09-30	12
2007-12-31	12
2008-03-31	14
2008-06-30	24
2008-09-30	23
2008-12-31	24
2009-03-31	40
2009-06-30	36
2009-09-30	27
2009-12-31	24
2010-03-31	74
2010-06-30	52
2010-09-30	98
2010-12-31	36
2011-03-31	55
2011-06-30	58
2011-09-30	53
2011-12-31	65
2012-03-31	40
2012-06-30	64
2012-09-30	76
2012-12-31	81
2013-03-31	76
2013-06-30	76
2013-09-30	79
2013-12-31	60
2014-03-31	53
2014-06-30	51
2014-09-30	52
2014-12-31	50
2015-03-31	36
2015-06-30	35
2015-09-30	35
2015-12-31	34
2016-03-31	32
2016-06-30	30
2016-09-30	25
2016-12-31	25
2017-03-31	28
2017-06-30	23
2017-09-30	24
2017-12-31	19
2018-03-31	14
2018-06-30	13
2018-09-30	12
2018-12-31	10
2019-03-31	8
2019-06-30	10
2019-09-30	12
2019-12-31	11
2020-03-31	11
2020-06-30	11
2020-09-30	9
2020-12-31	7
2021-03-31	7
2021-06-30	7
2021-09-30	8
2021-12-31	8
2022-03-31	8
2022-06-30	7
2022-09-30	16
2022-12-31	28
2023-03-31	34
2023-06-30	41
2023-09-30	40