Quarter	US dollars
2004-12-31	29
2005-03-31	25
2005-06-30	22
2005-09-30	16
2005-12-31	14
2006-03-31	16
2006-06-30	17
2006-09-30	54
2006-12-31	59
2007-03-31	63
2007-06-30	64
2007-09-30	-6
2007-12-31	6
2008-03-31	0
2008-06-30	18
2008-09-30	11
2008-12-31	13
2009-03-31	4
2009-06-30	3
2009-09-30	6
2009-12-31	3
2010-03-31	0
2010-06-30	1
2010-09-30	2
2010-12-31	-3
2011-03-31	3
2011-06-30	3
2011-09-30	22
2011-12-31	22
2012-03-31	22
2012-06-30	0
2012-09-30	13
2012-12-31	15
2013-03-31	-5
2013-06-30	-18
2013-09-30	-8
2013-12-31	-7
2014-03-31	-3
2014-06-30	14
2014-09-30	13
2014-12-31	12
2015-03-31	-1
2015-06-30	-11
2015-09-30	-8
2015-12-31	-21
2016-03-31	-17
2016-06-30	-27
2016-09-30	-3
2016-12-31	0
2017-03-31	0
2017-06-30	0
2017-09-30	0
2017-12-31	0
2018-03-31	0
2018-06-30	4
2018-09-30	0
2018-12-31	-1
2019-03-31	0
2019-06-30	-20
2019-09-30	0
2019-12-31	-8
2020-03-31	-7
2020-06-30	-7
2020-09-30	0
2020-12-31	0
2021-03-31	0
2021-06-30	0
2021-09-30	0
2021-12-31	0
2022-03-31	-9
2022-06-30	0
2022-09-30	-3
2022-12-31	-27
2023-03-31	1
2023-06-30	1
2023-09-30	1