Quarter	US dollars
2004-12-31	-255
2005-03-31	248
2005-06-30	-341
2005-09-30	218
2005-12-31	-1051
2006-03-31	-1259
2006-06-30	-89
2006-09-30	-1483
2006-12-31	-1943
2007-03-31	-2632
2007-06-30	-3118
2007-09-30	-3464
2007-12-31	-3844
2008-03-31	-3558
2008-06-30	-3290
2008-09-30	-3272
2008-12-31	-2979
2009-03-31	-3417
2009-06-30	-3394
2009-09-30	-1967
2009-12-31	-1222
2010-03-31	-1166
2010-06-30	-2596
2010-09-30	-1282
2010-12-31	-1205
2011-03-31	-1250
2011-06-30	-1180
2011-09-30	-1608
2011-12-31	-1538
2012-03-31	-1517
2012-06-30	-1330
2012-09-30	-1189
2012-12-31	-949
2013-03-31	-858
2013-06-30	-296
2013-09-30	-599
2013-12-31	-407
2014-03-31	-345
2014-06-30	-470
2014-09-30	-597
2014-12-31	-595
2015-03-31	-591
2015-06-30	-1504
2015-09-30	-1492
2015-12-31	-1547
2016-03-31	-1904
2016-06-30	-1916
2016-09-30	-1871
2016-12-31	-1526
2017-03-31	-1522
2017-06-30	-717
2017-09-30	-680
2017-12-31	-634
2018-03-31	-679
2018-06-30	-658
2018-09-30	-655
2018-12-31	-675
2019-03-31	-694
2019-06-30	-680
2019-09-30	-675
2019-12-31	-818
2020-03-31	-848
2020-06-30	-822
2020-09-30	-795
2020-12-31	-879
2021-03-31	-851
2021-06-30	-858
2021-09-30	-863
2021-12-31	-898
2022-03-31	-870
2022-06-30	-867
2022-09-30	-51
2022-12-31	-47
2023-03-31	-77
2023-06-30	-102
2023-09-30	-29