Quarter	US dollars
2004-12-31	-8858
2005-03-31	-11352
2005-06-30	-8265
2005-09-30	-12992
2005-12-31	-9177
2006-03-31	-10849
2006-06-30	-11514
2006-09-30	-9515
2006-12-31	-7460
2007-03-31	-7527
2007-06-30	-7801
2007-09-30	-9725
2007-12-31	-11267
2008-03-31	-13245
2008-06-30	-13214
2008-09-30	-10384
2008-12-31	-5450
2009-03-31	-5409
2009-06-30	-463
2009-09-30	-1479
2009-12-31	-6577
2010-03-31	-4511
2010-06-30	-4750
2010-09-30	-7652
2010-12-31	-5293
2011-03-31	-5958
2011-06-30	-6594
2011-09-30	-6278
2011-12-31	-6639
2012-03-31	-8077
2012-06-30	-7437
2012-09-30	-6442
2012-12-31	-5046
2013-03-31	-7672
2013-06-30	-7037
2013-09-30	-9070
2013-12-31	-8742
2014-03-31	-12420
2014-06-30	-12850
2014-09-30	-12877
2014-12-31	-9160
2015-03-31	-6677
2015-06-30	-7314
2015-09-30	-5803
2015-12-31	-6177
2016-03-31	-4880
2016-06-30	-5624
2016-09-30	-1895
2016-12-31	-2915
2017-03-31	-4395
2017-06-30	-1144
2017-09-30	-2112
2017-12-31	-1664
2018-03-31	-1698
2018-06-30	-1183
2018-09-30	-1582
2018-12-31	-1634
2019-03-31	-1386
2019-06-30	1255
2019-09-30	-330
2019-12-31	-638
2020-03-31	-538
2020-06-30	418
2020-09-30	-1955
2020-12-31	-5641
2021-03-31	-8006
2021-06-30	-6554
2021-09-30	-8611
2021-12-31	-7678
2022-03-31	-8089
2022-06-30	-8428
2022-09-30	-9868
2022-12-31	-10464
2023-03-31	-9513
2023-06-30	-9151
2023-09-30	-6075