Quarter	US dollars
2004-12-31	-563
2005-03-31	-599
2005-06-30	-776
2005-09-30	-998
2005-12-31	-723
2006-03-31	-914
2006-06-30	-873
2006-09-30	-921
2006-12-31	-904
2007-03-31	-908
2007-06-30	-1059
2007-09-30	-915
2007-12-31	-950
2008-03-31	-942
2008-06-30	-868
2008-09-30	-806
2008-12-31	-666
2009-03-31	-707
2009-06-30	-807
2009-09-30	-964
2009-12-31	-856
2010-03-31	-887
2010-06-30	-766
2010-09-30	-648
2010-12-31	-668
2011-03-31	-45
2011-06-30	-19
2011-09-30	30
2011-12-31	51
2012-03-31	-5
2012-06-30	-107
2012-09-30	-68
2012-12-31	-26
2013-03-31	26
2013-06-30	17
2013-09-30	-11
2013-12-31	-31
2014-03-31	-2
2014-06-30	-26
2014-09-30	-131
2014-12-31	-112
2015-03-31	-65
2015-06-30	-33
2015-09-30	-2
2015-12-31	-136
2016-03-31	-35
2016-06-30	-27
2016-09-30	-43
2016-12-31	-37
2017-03-31	-51
2017-06-30	-113
2017-09-30	-85
2017-12-31	-101
2018-03-31	-28
2018-06-30	-57
2018-09-30	-44
2018-12-31	56
2019-03-31	618
2019-06-30	196
2019-09-30	-96
2019-12-31	-122
2020-03-31	-83
2020-06-30	-83
2020-09-30	-143
2020-12-31	-97
2021-03-31	-94
2021-06-30	-94
2021-09-30	-94
2021-12-31	-42
2022-03-31	-50
2022-06-30	-24
2022-09-30	-14
2022-12-31	-17
2023-03-31	-17
2023-06-30	-222
2023-09-30	-69