Quarter	US dollars
2004-12-31	21
2005-03-31	19
2005-06-30	20
2005-09-30	7
2005-12-31	15
2006-03-31	14
2006-06-30	9
2006-09-30	13
2006-12-31	12
2007-03-31	16
2007-06-30	14
2007-09-30	20
2007-12-31	18
2008-03-31	20
2008-06-30	32
2008-09-30	100
2008-12-31	0
2009-03-31	-11
2009-06-30	-20
2009-09-30	-2
2009-12-31	-2
2010-03-31	-26
2010-06-30	-12
2010-09-30	-8
2010-12-31	-58
2011-03-31	-40
2011-06-30	-5
2011-09-30	36
2011-12-31	14
2012-03-31	5
2012-06-30	55
2012-09-30	45
2012-12-31	71
2013-03-31	94
2013-06-30	117
2013-09-30	52
2013-12-31	45
2014-03-31	52
2014-06-30	51
2014-09-30	62
2014-12-31	14
2015-03-31	16
2015-06-30	19
2015-09-30	26
2015-12-31	37
2016-03-31	24
2016-06-30	62
2016-09-30	29
2016-12-31	37
2017-03-31	5
2017-06-30	8
2017-09-30	23
2017-12-31	7
2018-03-31	24
2018-06-30	4
2018-09-30	33
2018-12-31	28
2019-03-31	21
2019-06-30	20
2019-09-30	39
2019-12-31	63
2020-03-31	108
2020-06-30	59
2020-09-30	41
2020-12-31	42
2021-03-31	36
2021-06-30	69
2021-09-30	54
2021-12-31	51
2022-03-31	41
2022-06-30	29
2022-09-30	42
2022-12-31	58
2023-03-31	34
2023-06-30	89
2023-09-30	24