Quarter	US dollars
2004-12-31	-79
2005-03-31	-60
2005-06-30	-32
2005-09-30	-28
2005-12-31	-566
2006-03-31	-805
2006-06-30	-975
2006-09-30	-1362
2006-12-31	-2380
2007-03-31	-2691
2007-06-30	-3509
2007-09-30	-4360
2007-12-31	-5672
2008-03-31	-7481
2008-06-30	-8932
2008-09-30	-6353
2008-12-31	-7503
2009-03-31	-7975
2009-06-30	-9006
2009-09-30	-5012
2009-12-31	-4366
2010-03-31	-4030
2010-06-30	-3767
2010-09-30	-54
2010-12-31	-31
2011-03-31	-53
2011-06-30	-72
2011-09-30	-62
2011-12-31	20
2012-03-31	-5
2012-06-30	22
2012-09-30	19
2012-12-31	-27
2013-03-31	18
2013-06-30	55
2013-09-30	39
2013-12-31	53
2014-03-31	27
2014-06-30	67
2014-09-30	39
2014-12-31	36
2015-03-31	18
2015-06-30	49
2015-09-30	0
2015-12-31	-1
2016-03-31	-1
2016-06-30	0
2016-09-30	-1
2016-12-31	-1
2017-03-31	0
2017-06-30	0
2017-09-30	0
2017-12-31	0
2018-03-31	0
2018-06-30	0
2018-09-30	0
2018-12-31	0
2019-03-31	0
2019-06-30	0
2019-09-30	0
2019-12-31	0
2020-03-31	0
2020-06-30	0
2020-09-30	0
2020-12-31	0
2021-03-31	0
2021-06-30	0
2021-09-30	0
2021-12-31	0
2022-03-31	0
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0