Quarter	US dollars
2004-12-31	15
2005-03-31	-2
2005-06-30	22
2005-09-30	28
2005-12-31	70
2006-03-31	62
2006-06-30	30
2006-09-30	41
2006-12-31	39
2007-03-31	67
2007-06-30	42
2007-09-30	96
2007-12-31	125
2008-03-31	-2
2008-06-30	235
2008-09-30	397
2008-12-31	722
2009-03-31	775
2009-06-30	155
2009-09-30	32
2009-12-31	16
2010-03-31	82
2010-06-30	91
2010-09-30	211
2010-12-31	333
2011-03-31	88
2011-06-30	90
2011-09-30	67
2011-12-31	108
2012-03-31	59
2012-06-30	-41
2012-09-30	-34
2012-12-31	8
2013-03-31	59
2013-06-30	27
2013-09-30	609
2013-12-31	89
2014-03-31	243
2014-06-30	653
2014-09-30	-400
2014-12-31	-701
2015-03-31	-664
2015-06-30	-672
2015-09-30	-830
2015-12-31	-694
2016-03-31	-824
2016-06-30	-850
2016-09-30	-812
2016-12-31	-1013
2017-03-31	-1242
2017-06-30	-796
2017-09-30	-719
2017-12-31	-1086
2018-03-31	-1005
2018-06-30	-1102
2018-09-30	-832
2018-12-31	-953
2019-03-31	-778
2019-06-30	-873
2019-09-30	-926
2019-12-31	-728
2020-03-31	-1276
2020-06-30	-1236
2020-09-30	-1142
2020-12-31	-950
2021-03-31	-1010
2021-06-30	-753
2021-09-30	-471
2021-12-31	-406
2022-03-31	-658
2022-06-30	-657
2022-09-30	-750
2022-12-31	-668
2023-03-31	-484
2023-06-30	-575
2023-09-30	-394