Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	0
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	0
2006-12-31	0
2007-03-31	0
2007-06-30	0
2007-09-30	0
2007-12-31	0
2008-03-31	0
2008-06-30	0
2008-09-30	0
2008-12-31	0
2009-03-31	0
2009-06-30	0
2009-09-30	0
2009-12-31	0
2010-03-31	0
2010-06-30	34
2010-09-30	9
2010-12-31	34
2011-03-31	32
2011-06-30	31
2011-09-30	28
2011-12-31	26
2012-03-31	26
2012-06-30	24
2012-09-30	19
2012-12-31	21
2013-03-31	18
2013-06-30	0
2013-09-30	0
2013-12-31	0
2014-03-31	0
2014-06-30	2
2014-09-30	2
2014-12-31	3
2015-03-31	1
2015-06-30	-3
2015-09-30	0
2015-12-31	3
2016-03-31	0
2016-06-30	-5
2016-09-30	-6
2016-12-31	23
2017-03-31	23
2017-06-30	43
2017-09-30	23
2017-12-31	15
2018-03-31	62
2018-06-30	71
2018-09-30	50
2018-12-31	52
2019-03-31	52
2019-06-30	69
2019-09-30	52
2019-12-31	53
2020-03-31	40
2020-06-30	32
2020-09-30	40
2020-12-31	38
2021-03-31	33
2021-06-30	33
2021-09-30	34
2021-12-31	20
2022-03-31	42
2022-06-30	26
2022-09-30	35
2022-12-31	49
2023-03-31	44
2023-06-30	39
2023-09-30	26