Quarter	US dollars
2004-12-31	-12
2005-03-31	-8
2005-06-30	-9
2005-09-30	-16
2005-12-31	-12
2006-03-31	-10
2006-06-30	-13
2006-09-30	-11
2006-12-31	-6
2007-03-31	-2
2007-06-30	-92
2007-09-30	-179
2007-12-31	-229
2008-03-31	-125
2008-06-30	-115
2008-09-30	-112
2008-12-31	-33
2009-03-31	-21
2009-06-30	-48
2009-09-30	-62
2009-12-31	-47
2010-03-31	-49
2010-06-30	-52
2010-09-30	-44
2010-12-31	-45
2011-03-31	-21
2011-06-30	-26
2011-09-30	-23
2011-12-31	-22
2012-03-31	-6
2012-06-30	-45
2012-09-30	-21
2012-12-31	-13
2013-03-31	-17
2013-06-30	-36
2013-09-30	-44
2013-12-31	-79
2014-03-31	-102
2014-06-30	-106
2014-09-30	-135
2014-12-31	-204
2015-03-31	-316
2015-06-30	-105
2015-09-30	-127
2015-12-31	-108
2016-03-31	-150
2016-06-30	-193
2016-09-30	-168
2016-12-31	-97
2017-03-31	-105
2017-06-30	-123
2017-09-30	-130
2017-12-31	-73
2018-03-31	-157
2018-06-30	-112
2018-09-30	-149
2018-12-31	-157
2019-03-31	-366
2019-06-30	-664
2019-09-30	-876
2019-12-31	-661
2020-03-31	-1738
2020-06-30	-1688
2020-09-30	-1617
2020-12-31	-1462
2021-03-31	-898
2021-06-30	-977
2021-09-30	-837
2021-12-31	-640
2022-03-31	-67
2022-06-30	-36
2022-09-30	-63
2022-12-31	-24
2023-03-31	-21
2023-06-30	-18
2023-09-30	-36