Quarter	US dollars
2004-12-31	17
2005-03-31	8
2005-06-30	4
2005-09-30	5
2005-12-31	5
2006-03-31	5
2006-06-30	4
2006-09-30	4
2006-12-31	22
2007-03-31	14
2007-06-30	48
2007-09-30	10
2007-12-31	6
2008-03-31	22
2008-06-30	16
2008-09-30	36
2008-12-31	42
2009-03-31	16
2009-06-30	21
2009-09-30	14
2009-12-31	11
2010-03-31	8
2010-06-30	-27
2010-09-30	19
2010-12-31	3
2011-03-31	2
2011-06-30	0
2011-09-30	-6
2011-12-31	-2
2012-03-31	0
2012-06-30	2
2012-09-30	-2
2012-12-31	-26
2013-03-31	-29
2013-06-30	-2
2013-09-30	-10
2013-12-31	-46
2014-03-31	-15
2014-06-30	-80
2014-09-30	-79
2014-12-31	-83
2015-03-31	-99
2015-06-30	-96
2015-09-30	-89
2015-12-31	-107
2016-03-31	-46
2016-06-30	-21
2016-09-30	-14
2016-12-31	121
2017-03-31	-41
2017-06-30	-49
2017-09-30	-34
2017-12-31	-45
2018-03-31	-20
2018-06-30	-62
2018-09-30	-73
2018-12-31	-102
2019-03-31	-240
2019-06-30	-475
2019-09-30	-716
2019-12-31	-480
2020-03-31	-1384
2020-06-30	-1373
2020-09-30	-1214
2020-12-31	-1024
2021-03-31	-505
2021-06-30	-694
2021-09-30	-608
2021-12-31	-523
2022-03-31	-71
2022-06-30	-93
2022-09-30	-130
2022-12-31	-14
2023-03-31	2
2023-06-30	-18
2023-09-30	-4