Quarter	US dollars
2004-12-31	8054
2005-03-31	-403
2005-06-30	7792
2005-09-30	1978
2005-12-31	6260
2006-03-31	7039
2006-06-30	5458
2006-09-30	7979
2006-12-31	8129
2007-03-31	6160
2007-06-30	1742
2007-09-30	5872
2007-12-31	8782
2008-03-31	5346
2008-06-30	2898
2008-09-30	5027
2008-12-31	1558
2009-03-31	5565
2009-06-30	4677
2009-09-30	5698
2009-12-31	-228
2010-03-31	1826
2010-06-30	51
2010-09-30	865
2010-12-31	-333
2011-03-31	168
2011-06-30	716
2011-09-30	-273
2011-12-31	-742
2012-03-31	-165
2012-06-30	2
2012-09-30	-82
2012-12-31	192
2013-03-31	431
2013-06-30	1118
2013-09-30	-2063
2013-12-31	650
2014-03-31	1175
2014-06-30	407
2014-09-30	-246
2014-12-31	512
2015-03-31	511
2015-06-30	-55
2015-09-30	1389
2015-12-31	977
2016-03-31	1402
2016-06-30	387
2016-09-30	1047
2016-12-31	838
2017-03-31	1074
2017-06-30	1755
2017-09-30	757
2017-12-31	840
2018-03-31	1482
2018-06-30	1025
2018-09-30	957
2018-12-31	547
2019-03-31	1375
2019-06-30	862
2019-09-30	652
2019-12-31	588
2020-03-31	659
2020-06-30	627
2020-09-30	724
2020-12-31	605
2021-03-31	668
2021-06-30	551
2021-09-30	468
2021-12-31	511
2022-03-31	200
2022-06-30	270
2022-09-30	619
2022-12-31	451
2023-03-31	582
2023-06-30	413
2023-09-30	361