Quarter	US dollars
2004-12-31	-13
2005-03-31	-8
2005-06-30	-7
2005-09-30	-18
2005-12-31	-12
2006-03-31	-12
2006-06-30	-28
2006-09-30	-22
2006-12-31	-29
2007-03-31	-27
2007-06-30	-309
2007-09-30	-20
2007-12-31	-18
2008-03-31	-40
2008-06-30	-14
2008-09-30	-11
2008-12-31	-14
2009-03-31	-60
2009-06-30	-160
2009-09-30	-43
2009-12-31	-19
2010-03-31	-39
2010-06-30	-27
2010-09-30	-17
2010-12-31	-23
2011-03-31	-24
2011-06-30	-10
2011-09-30	-25
2011-12-31	-2
2012-03-31	-19
2012-06-30	-66
2012-09-30	-79
2012-12-31	-70
2013-03-31	-108
2013-06-30	-105
2013-09-30	-45
2013-12-31	-13
2014-03-31	-10
2014-06-30	-2
2014-09-30	-24
2014-12-31	-109
2015-03-31	-76
2015-06-30	-30
2015-09-30	-118
2015-12-31	-98
2016-03-31	-138
2016-06-30	-169
2016-09-30	-100
2016-12-31	-159
2017-03-31	-149
2017-06-30	-51
2017-09-30	-47
2017-12-31	-143
2018-03-31	-136
2018-06-30	-140
2018-09-30	-136
2018-12-31	-176
2019-03-31	-70
2019-06-30	-140
2019-09-30	-96
2019-12-31	-260
2020-03-31	-119
2020-06-30	-136
2020-09-30	-211
2020-12-31	-106
2021-03-31	-210
2021-06-30	-28
2021-09-30	-30
2021-12-31	-31
2022-03-31	-5
2022-06-30	-32
2022-09-30	-14
2022-12-31	-4
2023-03-31	-31
2023-06-30	-27
2023-09-30	100