Quarter	US dollars
2004-12-31	-1265
2005-03-31	-909
2005-06-30	-1515
2005-09-30	-1463
2005-12-31	-872
2006-03-31	-1821
2006-06-30	-1404
2006-09-30	-1541
2006-12-31	-1481
2007-03-31	-1763
2007-06-30	-1940
2007-09-30	-2255
2007-12-31	-1951
2008-03-31	-1586
2008-06-30	-1851
2008-09-30	-1367
2008-12-31	-1534
2009-03-31	-1572
2009-06-30	-1428
2009-09-30	-1433
2009-12-31	-1576
2010-03-31	-1960
2010-06-30	402
2010-09-30	507
2010-12-31	113
2011-03-31	46
2011-06-30	-236
2011-09-30	140
2011-12-31	23
2012-03-31	123
2012-06-30	306
2012-09-30	166
2012-12-31	273
2013-03-31	178
2013-06-30	91
2013-09-30	50
2013-12-31	-241
2014-03-31	-297
2014-06-30	-92
2014-09-30	-159
2014-12-31	-384
2015-03-31	-224
2015-06-30	-253
2015-09-30	-754
2015-12-31	-139
2016-03-31	-190
2016-06-30	-246
2016-09-30	-348
2016-12-31	-252
2017-03-31	-243
2017-06-30	-21
2017-09-30	-32
2017-12-31	-18
2018-03-31	46
2018-06-30	-22
2018-09-30	18
2018-12-31	-68
2019-03-31	26
2019-06-30	24
2019-09-30	39
2019-12-31	-32
2020-03-31	83
2020-06-30	84
2020-09-30	207
2020-12-31	184
2021-03-31	121
2021-06-30	145
2021-09-30	156
2021-12-31	175
2022-03-31	166
2022-06-30	168
2022-09-30	37
2022-12-31	18
2023-03-31	25
2023-06-30	20
2023-09-30	93