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	2
2017-03-31	1
2017-06-30	19
2017-09-30	-1
2017-12-31	-9
2018-03-31	35
2018-06-30	46
2018-09-30	25
2018-12-31	28
2019-03-31	27
2019-06-30	38
2019-09-30	21
2019-12-31	18
2020-03-31	17
2020-06-30	14
2020-09-30	16
2020-12-31	15
2021-03-31	11
2021-06-30	6
2021-09-30	13
2021-12-31	-3
2022-03-31	3
2022-06-30	2
2022-09-30	3
2022-12-31	8
2023-03-31	2
2023-06-30	-1
2023-09-30	5