Quarter	US dollars
2004-12-31	973
2005-03-31	733
2005-06-30	1210
2005-09-30	976
2005-12-31	1087
2006-03-31	1070
2006-06-30	802
2006-09-30	531
2006-12-31	556
2007-03-31	606
2007-06-30	602
2007-09-30	970
2007-12-31	1035
2008-03-31	2222
2008-06-30	987
2008-09-30	440
2008-12-31	1364
2009-03-31	883
2009-06-30	-525
2009-09-30	-2437
2009-12-31	-576
2010-03-31	-270
2010-06-30	-148
2010-09-30	-808
2010-12-31	-755
2011-03-31	-481
2011-06-30	-172
2011-09-30	-240
2011-12-31	118
2012-03-31	1173
2012-06-30	781
2012-09-30	1311
2012-12-31	1428
2013-03-31	931
2013-06-30	-306
2013-09-30	429
2013-12-31	299
2014-03-31	739
2014-06-30	1178
2014-09-30	1229
2014-12-31	1155
2015-03-31	2518
2015-06-30	1998
2015-09-30	1242
2015-12-31	1060
2016-03-31	336
2016-06-30	799
2016-09-30	411
2016-12-31	784
2017-03-31	161
2017-06-30	29
2017-09-30	76
2017-12-31	-527
2018-03-31	-553
2018-06-30	-623
2018-09-30	12
2018-12-31	-1
2019-03-31	-12
2019-06-30	-80
2019-09-30	-193
2019-12-31	-303
2020-03-31	-842
2020-06-30	-162
2020-09-30	-58
2020-12-31	-105
2021-03-31	-304
2021-06-30	66
2021-09-30	-197
2021-12-31	-139
2022-03-31	-163
2022-06-30	-142
2022-09-30	-38
2022-12-31	423
2023-03-31	211
2023-06-30	664
2023-09-30	568