Quarter	US dollars
2004-12-31	-3642
2005-03-31	-4234
2005-06-30	-6039
2005-09-30	-5835
2005-12-31	-5586
2006-03-31	-5509
2006-06-30	-5724
2006-09-30	-7041
2006-12-31	-5979
2007-03-31	-6037
2007-06-30	-5064
2007-09-30	-3753
2007-12-31	-4951
2008-03-31	-3778
2008-06-30	-3491
2008-09-30	-3434
2008-12-31	-5781
2009-03-31	-3455
2009-06-30	-2498
2009-09-30	-1636
2009-12-31	-2359
2010-03-31	-1552
2010-06-30	-2193
2010-09-30	-2143
2010-12-31	-2164
2011-03-31	-362
2011-06-30	-77
2011-09-30	-344
2011-12-31	734
2012-03-31	2370
2012-06-30	2889
2012-09-30	2306
2012-12-31	773
2013-03-31	1468
2013-06-30	3564
2013-09-30	1559
2013-12-31	2360
2014-03-31	2924
2014-06-30	1474
2014-09-30	1209
2014-12-31	2213
2015-03-31	1906
2015-06-30	2265
2015-09-30	2378
2015-12-31	453
2016-03-31	161
2016-06-30	1551
2016-09-30	1316
2016-12-31	3515
2017-03-31	2832
2017-06-30	1522
2017-09-30	1209
2017-12-31	1227
2018-03-31	-79
2018-06-30	1190
2018-09-30	-26
2018-12-31	2318
2019-03-31	474
2019-06-30	1026
2019-09-30	253
2019-12-31	797
2020-03-31	2059
2020-06-30	-163
2020-09-30	371
2020-12-31	1867
2021-03-31	2383
2021-06-30	1951
2021-09-30	820
2021-12-31	1055
2022-03-31	1165
2022-06-30	1094
2022-09-30	384
2022-12-31	834
2023-03-31	228
2023-06-30	435
2023-09-30	1484