Quarter	US dollars
2004-12-31	13
2005-03-31	11
2005-06-30	-32
2005-09-30	-9
2005-12-31	-17
2006-03-31	-28
2006-06-30	15
2006-09-30	4
2006-12-31	18
2007-03-31	-25
2007-06-30	-44
2007-09-30	-47
2007-12-31	-40
2008-03-31	-72
2008-06-30	-64
2008-09-30	-46
2008-12-31	-40
2009-03-31	-24
2009-06-30	-21
2009-09-30	-10
2009-12-31	-39
2010-03-31	-24
2010-06-30	-16
2010-09-30	-46
2010-12-31	-72
2011-03-31	-16
2011-06-30	-19
2011-09-30	-44
2011-12-31	-39
2012-03-31	-145
2012-06-30	-30
2012-09-30	-100
2012-12-31	-58
2013-03-31	-33
2013-06-30	6
2013-09-30	-53
2013-12-31	-55
2014-03-31	-92
2014-06-30	-80
2014-09-30	-160
2014-12-31	-144
2015-03-31	-129
2015-06-30	-96
2015-09-30	-106
2015-12-31	-132
2016-03-31	-147
2016-06-30	-132
2016-09-30	-133
2016-12-31	-119
2017-03-31	-141
2017-06-30	-129
2017-09-30	-110
2017-12-31	-122
2018-03-31	-154
2018-06-30	-156
2018-09-30	-123
2018-12-31	-98
2019-03-31	-109
2019-06-30	-53
2019-09-30	-39
2019-12-31	-30
2020-03-31	-67
2020-06-30	-224
2020-09-30	-35
2020-12-31	-145
2021-03-31	-94
2021-06-30	-41
2021-09-30	-102
2021-12-31	-112
2022-03-31	-95
2022-06-30	-74
2022-09-30	-59
2022-12-31	-47
2023-03-31	-69
2023-06-30	-83
2023-09-30	-51