Quarter	US dollars
2004-12-31	0
2005-03-31	2
2005-06-30	-14
2005-09-30	-19
2005-12-31	55
2006-03-31	191
2006-06-30	70
2006-09-30	263
2006-12-31	268
2007-03-31	263
2007-06-30	319
2007-09-30	428
2007-12-31	179
2008-03-31	366
2008-06-30	121
2008-09-30	333
2008-12-31	24
2009-03-31	33
2009-06-30	21
2009-09-30	34
2009-12-31	23
2010-03-31	55
2010-06-30	48
2010-09-30	124
2010-12-31	38
2011-03-31	29
2011-06-30	51
2011-09-30	16
2011-12-31	11
2012-03-31	-10
2012-06-30	9
2012-09-30	-8
2012-12-31	0
2013-03-31	0
2013-06-30	0
2013-09-30	0
2013-12-31	-3
2014-03-31	-3
2014-06-30	-3
2014-09-30	-3
2014-12-31	-3
2015-03-31	-3
2015-06-30	-3
2015-09-30	-3
2015-12-31	-3
2016-03-31	-3
2016-06-30	0
2016-09-30	0
2016-12-31	0
2017-03-31	0
2017-06-30	0
2017-09-30	1
2017-12-31	0
2018-03-31	0
2018-06-30	1
2018-09-30	0
2018-12-31	0
2019-03-31	0
2019-06-30	0
2019-09-30	0
2019-12-31	0
2020-03-31	0
2020-06-30	0
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	0
2022-06-30	0
2022-09-30	0
2022-12-31	1
2023-03-31	1
2023-06-30	1
2023-09-30	1