Quarter	US dollars
2004-12-31	38
2005-03-31	-45
2005-06-30	220
2005-09-30	320
2005-12-31	-1
2006-03-31	111
2006-06-30	174
2006-09-30	45
2006-12-31	691
2007-03-31	667
2007-06-30	706
2007-09-30	685
2007-12-31	358
2008-03-31	501
2008-06-30	203
2008-09-30	346
2008-12-31	197
2009-03-31	209
2009-06-30	183
2009-09-30	184
2009-12-31	116
2010-03-31	-127
2010-06-30	-72
2010-09-30	-1037
2010-12-31	-878
2011-03-31	-806
2011-06-30	-923
2011-09-30	-932
2011-12-31	-1048
2012-03-31	-1127
2012-06-30	-279
2012-09-30	-1001
2012-12-31	-1044
2013-03-31	-888
2013-06-30	-918
2013-09-30	-1085
2013-12-31	-1279
2014-03-31	-320
2014-06-30	-243
2014-09-30	-227
2014-12-31	-346
2015-03-31	-356
2015-06-30	-344
2015-09-30	-404
2015-12-31	-479
2016-03-31	-361
2016-06-30	-121
2016-09-30	-227
2016-12-31	-273
2017-03-31	-278
2017-06-30	-335
2017-09-30	-378
2017-12-31	-68
2018-03-31	-361
2018-06-30	-392
2018-09-30	-153
2018-12-31	-186
2019-03-31	-414
2019-06-30	-528
2019-09-30	-391
2019-12-31	-370
2020-03-31	-151
2020-06-30	-387
2020-09-30	-332
2020-12-31	-314
2021-03-31	-401
2021-06-30	-130
2021-09-30	-150
2021-12-31	-288
2022-03-31	105
2022-06-30	-191
2022-09-30	-166
2022-12-31	-71
2023-03-31	-60
2023-06-30	-115
2023-09-30	-10