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	28
2006-06-30	57
2006-09-30	58
2006-12-31	182
2007-03-31	79
2007-06-30	152
2007-09-30	163
2007-12-31	209
2008-03-31	231
2008-06-30	249
2008-09-30	241
2008-12-31	269
2009-03-31	325
2009-06-30	369
2009-09-30	334
2009-12-31	381
2010-03-31	406
2010-06-30	386
2010-09-30	421
2010-12-31	452
2011-03-31	444
2011-06-30	514
2011-09-30	539
2011-12-31	535
2012-03-31	563
2012-06-30	513
2012-09-30	455
2012-12-31	49
2013-03-31	55
2013-06-30	44
2013-09-30	52
2013-12-31	8
2014-03-31	7
2014-06-30	-5
2014-09-30	2
2014-12-31	0
2015-03-31	0
2015-06-30	3
2015-09-30	5
2015-12-31	3
2016-03-31	12
2016-06-30	9
2016-09-30	9
2016-12-31	12
2017-03-31	16
2017-06-30	12
2017-09-30	3
2017-12-31	14
2018-03-31	1
2018-06-30	-21
2018-09-30	12
2018-12-31	14
2019-03-31	-25
2019-06-30	-8
2019-09-30	-9
2019-12-31	-24
2020-03-31	7
2020-06-30	-15
2020-09-30	4
2020-12-31	1
2021-03-31	0
2021-06-30	17
2021-09-30	-8
2021-12-31	0
2022-03-31	-17
2022-06-30	-10
2022-09-30	9
2022-12-31	-17
2023-03-31	6
2023-06-30	14
2023-09-30	-18