Quarter	US dollars
2004-12-31	-430
2005-03-31	-630
2005-06-30	-758
2005-09-30	-695
2005-12-31	-803
2006-03-31	-819
2006-06-30	-706
2006-09-30	-697
2006-12-31	-883
2007-03-31	-502
2007-06-30	-463
2007-09-30	-189
2007-12-31	4
2008-03-31	-185
2008-06-30	-334
2008-09-30	-100
2008-12-31	-104
2009-03-31	-110
2009-06-30	170
2009-09-30	361
2009-12-31	-593
2010-03-31	-89
2010-06-30	-33
2010-09-30	-457
2010-12-31	-47
2011-03-31	1252
2011-06-30	1989
2011-09-30	1644
2011-12-31	1399
2012-03-31	585
2012-06-30	844
2012-09-30	1250
2012-12-31	1378
2013-03-31	1480
2013-06-30	3253
2013-09-30	3363
2013-12-31	1887
2014-03-31	1346
2014-06-30	2259
2014-09-30	1761
2014-12-31	1547
2015-03-31	1164
2015-06-30	143
2015-09-30	-342
2015-12-31	-357
2016-03-31	-128
2016-06-30	125
2016-09-30	-356
2016-12-31	-486
2017-03-31	-323
2017-06-30	-1764
2017-09-30	-1346
2017-12-31	-1979
2018-03-31	-2308
2018-06-30	-2127
2018-09-30	-2067
2018-12-31	-2103
2019-03-31	-1480
2019-06-30	-960
2019-09-30	-968
2019-12-31	-573
2020-03-31	-641
2020-06-30	-509
2020-09-30	-847
2020-12-31	-886
2021-03-31	-683
2021-06-30	-1043
2021-09-30	-233
2021-12-31	-243
2022-03-31	-395
2022-06-30	-528
2022-09-30	-467
2022-12-31	-500
2023-03-31	-227
2023-06-30	88
2023-09-30	-49