Quarter	US dollars
2004-12-31	-424
2005-03-31	-618
2005-06-30	-658
2005-09-30	-511
2005-12-31	-700
2006-03-31	-616
2006-06-30	-875
2006-09-30	-807
2006-12-31	-708
2007-03-31	-639
2007-06-30	-578
2007-09-30	-493
2007-12-31	-325
2008-03-31	-223
2008-06-30	-641
2008-09-30	-531
2008-12-31	-463
2009-03-31	-436
2009-06-30	-466
2009-09-30	-451
2009-12-31	-409
2010-03-31	-375
2010-06-30	-292
2010-09-30	-147
2010-12-31	-144
2011-03-31	-125
2011-06-30	-104
2011-09-30	-84
2011-12-31	-83
2012-03-31	-72
2012-06-30	-66
2012-09-30	-58
2012-12-31	-60
2013-03-31	-36
2013-06-30	-42
2013-09-30	-36
2013-12-31	-36
2014-03-31	-25
2014-06-30	-21
2014-09-30	-19
2014-12-31	-16
2015-03-31	-40
2015-06-30	-35
2015-09-30	-27
2015-12-31	-19
2016-03-31	-17
2016-06-30	-15
2016-09-30	-13
2016-12-31	-9
2017-03-31	-9
2017-06-30	-6
2017-09-30	-7
2017-12-31	-4
2018-03-31	-4
2018-06-30	-1
2018-09-30	0
2018-12-31	0
2019-03-31	0
2019-06-30	1
2019-09-30	1
2019-12-31	1
2020-03-31	1
2020-06-30	1
2020-09-30	1
2020-12-31	0
2021-03-31	0
2021-06-30	0
2021-09-30	0
2021-12-31	0
2022-03-31	0
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0