Quarter	US dollars
2004-12-31	-71
2005-03-31	-51
2005-06-30	-75
2005-09-30	-94
2005-12-31	-206
2006-03-31	-212
2006-06-30	-235
2006-09-30	-234
2006-12-31	-196
2007-03-31	-126
2007-06-30	-128
2007-09-30	-84
2007-12-31	-68
2008-03-31	-68
2008-06-30	-86
2008-09-30	-100
2008-12-31	-72
2009-03-31	-14
2009-06-30	61
2009-09-30	-6
2009-12-31	63
2010-03-31	5
2010-06-30	7
2010-09-30	41
2010-12-31	38
2011-03-31	42
2011-06-30	42
2011-09-30	5
2011-12-31	-12
2012-03-31	40
2012-06-30	25
2012-09-30	74
2012-12-31	115
2013-03-31	137
2013-06-30	114
2013-09-30	83
2013-12-31	-55
2014-03-31	-143
2014-06-30	-103
2014-09-30	-255
2014-12-31	-281
2015-03-31	-303
2015-06-30	-495
2015-09-30	-350
2015-12-31	-396
2016-03-31	-414
2016-06-30	-520
2016-09-30	-462
2016-12-31	-528
2017-03-31	-450
2017-06-30	-192
2017-09-30	-354
2017-12-31	-465
2018-03-31	-431
2018-06-30	-326
2018-09-30	-400
2018-12-31	-516
2019-03-31	-558
2019-06-30	-591
2019-09-30	-532
2019-12-31	-616
2020-03-31	-563
2020-06-30	-420
2020-09-30	-496
2020-12-31	-576
2021-03-31	-636
2021-06-30	-636
2021-09-30	-712
2021-12-31	-500
2022-03-31	-391
2022-06-30	-270
2022-09-30	-321
2022-12-31	-310
2023-03-31	-290
2023-06-30	-258
2023-09-30	-237