Quarter	US dollars
2004-12-31	0
2005-03-31	2
2005-06-30	2
2005-09-30	4
2005-12-31	5
2006-03-31	0
2006-06-30	0
2006-09-30	-7
2006-12-31	2
2007-03-31	6
2007-06-30	14
2007-09-30	18
2007-12-31	-38
2008-03-31	26
2008-06-30	6
2008-09-30	21
2008-12-31	109
2009-03-31	85
2009-06-30	72
2009-09-30	94
2009-12-31	66
2010-03-31	83
2010-06-30	120
2010-09-30	172
2010-12-31	67
2011-03-31	56
2011-06-30	79
2011-09-30	226
2011-12-31	349
2012-03-31	292
2012-06-30	331
2012-09-30	394
2012-12-31	66
2013-03-31	-5
2013-06-30	21
2013-09-30	372
2013-12-31	83
2014-03-31	42
2014-06-30	386
2014-09-30	486
2014-12-31	718
2015-03-31	785
2015-06-30	667
2015-09-30	760
2015-12-31	701
2016-03-31	949
2016-06-30	1068
2016-09-30	1129
2016-12-31	834
2017-03-31	906
2017-06-30	811
2017-09-30	826
2017-12-31	894
2018-03-31	21
2018-06-30	15
2018-09-30	1
2018-12-31	3
2019-03-31	12
2019-06-30	4
2019-09-30	6
2019-12-31	7
2020-03-31	9
2020-06-30	9
2020-09-30	8
2020-12-31	8
2021-03-31	6
2021-06-30	6
2021-09-30	4
2021-12-31	1
2022-03-31	1
2022-06-30	2
2022-09-30	3
2022-12-31	11
2023-03-31	11
2023-06-30	9
2023-09-30	10