Quarter	US dollars
2004-12-31	-65
2005-03-31	-60
2005-06-30	-57
2005-09-30	-57
2005-12-31	-57
2006-03-31	-99
2006-06-30	-113
2006-09-30	-118
2006-12-31	-117
2007-03-31	-131
2007-06-30	-148
2007-09-30	-134
2007-12-31	-50
2008-03-31	-117
2008-06-30	-90
2008-09-30	-46
2008-12-31	-69
2009-03-31	-76
2009-06-30	-71
2009-09-30	-61
2009-12-31	-65
2010-03-31	-64
2010-06-30	-52
2010-09-30	-52
2010-12-31	-38
2011-03-31	-30
2011-06-30	-53
2011-09-30	-20
2011-12-31	-22
2012-03-31	-21
2012-06-30	-22
2012-09-30	-23
2012-12-31	-24
2013-03-31	-32
2013-06-30	-21
2013-09-30	-18
2013-12-31	-15
2014-03-31	-23
2014-06-30	-24
2014-09-30	-21
2014-12-31	-27
2015-03-31	-22
2015-06-30	-19
2015-09-30	-15
2015-12-31	-16
2016-03-31	-16
2016-06-30	-12
2016-09-30	-12
2016-12-31	-12
2017-03-31	-13
2017-06-30	-13
2017-09-30	-12
2017-12-31	-9
2018-03-31	-10
2018-06-30	0
2018-09-30	-7
2018-12-31	-11
2019-03-31	-12
2019-06-30	-6
2019-09-30	-2
2019-12-31	-3
2020-03-31	-2
2020-06-30	-5
2020-09-30	0
2020-12-31	-1
2021-03-31	-11
2021-06-30	-1
2021-09-30	-3
2021-12-31	-1
2022-03-31	-1
2022-06-30	-2
2022-09-30	-6
2022-12-31	-7
2023-03-31	-4
2023-06-30	-10
2023-09-30	-7