Quarter	US dollars
2004-12-31	-232
2005-03-31	-28
2005-06-30	-238
2005-09-30	-249
2005-12-31	12
2006-03-31	-125
2006-06-30	-215
2006-09-30	-13
2006-12-31	10
2007-03-31	145
2007-06-30	251
2007-09-30	73
2007-12-31	179
2008-03-31	409
2008-06-30	535
2008-09-30	45
2008-12-31	171
2009-03-31	30
2009-06-30	23
2009-09-30	281
2009-12-31	170
2010-03-31	106
2010-06-30	75
2010-09-30	102
2010-12-31	-91
2011-03-31	-18
2011-06-30	-461
2011-09-30	-291
2011-12-31	0
2012-03-31	-246
2012-06-30	-36
2012-09-30	-648
2012-12-31	-40
2013-03-31	-272
2013-06-30	-179
2013-09-30	-784
2013-12-31	-1129
2014-03-31	-1632
2014-06-30	-2031
2014-09-30	-1957
2014-12-31	184
2015-03-31	70
2015-06-30	255
2015-09-30	244
2015-12-31	385
2016-03-31	368
2016-06-30	369
2016-09-30	57
2016-12-31	344
2017-03-31	78
2017-06-30	496
2017-09-30	499
2017-12-31	578
2018-03-31	107
2018-06-30	252
2018-09-30	137
2018-12-31	273
2019-03-31	378
2019-06-30	561
2019-09-30	588
2019-12-31	687
2020-03-31	814
2020-06-30	524
2020-09-30	686
2020-12-31	130
2021-03-31	127
2021-06-30	326
2021-09-30	332
2021-12-31	360
2022-03-31	-42
2022-06-30	-30
2022-09-30	-5
2022-12-31	-224
2023-03-31	-276
2023-06-30	-244
2023-09-30	-66