Quarter	US dollars
2004-12-31	-948
2005-03-31	-1293
2005-06-30	-586
2005-09-30	-101
2005-12-31	221
2006-03-31	-383
2006-06-30	-335
2006-09-30	-405
2006-12-31	-4577
2007-03-31	-2918
2007-06-30	-2667
2007-09-30	-1750
2007-12-31	-2795
2008-03-31	-2262
2008-06-30	-2651
2008-09-30	-2331
2008-12-31	-2652
2009-03-31	-1353
2009-06-30	-1727
2009-09-30	-2946
2009-12-31	-7644
2010-03-31	-9457
2010-06-30	-6996
2010-09-30	-7725
2010-12-31	-8809
2011-03-31	915
2011-06-30	-665
2011-09-30	-6928
2011-12-31	-8258
2012-03-31	-8575
2012-06-30	-8447
2012-09-30	-8168
2012-12-31	-7927
2013-03-31	-5458
2013-06-30	-5876
2013-09-30	-4209
2013-12-31	-3712
2014-03-31	-5279
2014-06-30	-4876
2014-09-30	-3803
2014-12-31	-3610
2015-03-31	-3366
2015-06-30	-4096
2015-09-30	-2133
2015-12-31	-1658
2016-03-31	-2083
2016-06-30	-1622
2016-09-30	-643
2016-12-31	-343
2017-03-31	324
2017-06-30	805
2017-09-30	1821
2017-12-31	1370
2018-03-31	1440
2018-06-30	1291
2018-09-30	1877
2018-12-31	2432
2019-03-31	2478
2019-06-30	2982
2019-09-30	2803
2019-12-31	2351
2020-03-31	2179
2020-06-30	1911
2020-09-30	1817
2020-12-31	505
2021-03-31	-29
2021-06-30	578
2021-09-30	632
2021-12-31	268
2022-03-31	1636
2022-06-30	1060
2022-09-30	1305
2022-12-31	1308
2023-03-31	1113
2023-06-30	1783
2023-09-30	976