Quarter	US dollars
2004-12-31	-12
2005-03-31	-13
2005-06-30	-14
2005-09-30	-21
2005-12-31	-33
2006-03-31	-43
2006-06-30	-54
2006-09-30	-54
2006-12-31	-63
2007-03-31	-69
2007-06-30	-62
2007-09-30	-5016
2007-12-31	-6369
2008-03-31	-6410
2008-06-30	-6856
2008-09-30	-3657
2008-12-31	-3626
2009-03-31	-3480
2009-06-30	-3574
2009-09-30	-2591
2009-12-31	-2125
2010-03-31	-2551
2010-06-30	-2256
2010-09-30	-19
2010-12-31	-25
2011-03-31	-19
2011-06-30	-19
2011-09-30	-16
2011-12-31	19
2012-03-31	-19
2012-06-30	-17
2012-09-30	-15
2012-12-31	-18
2013-03-31	-17
2013-06-30	-14
2013-09-30	-11
2013-12-31	-13
2014-03-31	-20
2014-06-30	-15
2014-09-30	-16
2014-12-31	-14
2015-03-31	-15
2015-06-30	-60
2015-09-30	-58
2015-12-31	-50
2016-03-31	-46
2016-06-30	-36
2016-09-30	-68
2016-12-31	-50
2017-03-31	-51
2017-06-30	-39
2017-09-30	-40
2017-12-31	-28
2018-03-31	-6
2018-06-30	-5
2018-09-30	-5
2018-12-31	-9
2019-03-31	-8
2019-06-30	-9
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