Quarter	US dollars
2004-12-31	6
2005-03-31	8
2005-06-30	0
2005-09-30	0
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	0
2006-12-31	0
2007-03-31	0
2007-06-30	46
2007-09-30	137
2007-12-31	151
2008-03-31	240
2008-06-30	203
2008-09-30	185
2008-12-31	101
2009-03-31	75
2009-06-30	89
2009-09-30	90
2009-12-31	157
2010-03-31	138
2010-06-30	151
2010-09-30	142
2010-12-31	166
2011-03-31	167
2011-06-30	218
2011-09-30	237
2011-12-31	240
2012-03-31	347
2012-06-30	383
2012-09-30	672
2012-12-31	959
2013-03-31	1055
2013-06-30	849
2013-09-30	544
2013-12-31	607
2014-03-31	402
2014-06-30	482
2014-09-30	715
2014-12-31	450
2015-03-31	977
2015-06-30	1055
2015-09-30	907
2015-12-31	969
2016-03-31	654
2016-06-30	295
2016-09-30	503
2016-12-31	566
2017-03-31	650
2017-06-30	113
2017-09-30	219
2017-12-31	290
2018-03-31	566
2018-06-30	478
2018-09-30	153
2018-12-31	60
2019-03-31	298
2019-06-30	421
2019-09-30	341
2019-12-31	127
2020-03-31	16
2020-06-30	27
2020-09-30	-18
2020-12-31	22
2021-03-31	-17
2021-06-30	-18
2021-09-30	74
2021-12-31	28
2022-03-31	21
2022-06-30	-25
2022-09-30	38
2022-12-31	20
2023-03-31	37
2023-06-30	79
2023-09-30	-7