Quarter	US dollars
2004-12-31	6140
2005-03-31	4881
2005-06-30	6971
2005-09-30	7793
2005-12-31	8262
2006-03-31	7613
2006-06-30	7472
2006-09-30	9588
2006-12-31	9525
2007-03-31	12729
2007-06-30	18577
2007-09-30	17758
2007-12-31	22135
2008-03-31	21978
2008-06-30	20056
2008-09-30	13678
2008-12-31	12102
2009-03-31	11564
2009-06-30	11743
2009-09-30	5514
2009-12-31	-18349
2010-03-31	-21114
2010-06-30	-22664
2010-09-30	-23434
2010-12-31	-24110
2011-03-31	-23651
2011-06-30	-25608
2011-09-30	-21588
2011-12-31	-13408
2012-03-31	-14965
2012-06-30	-12900
2012-09-30	-17402
2012-12-31	-3185
2013-03-31	-2455
2013-06-30	-2610
2013-09-30	-1775
2013-12-31	-2225
2014-03-31	-260
2014-06-30	474
2014-09-30	-144
2014-12-31	-848
2015-03-31	-1121
2015-06-30	-713
2015-09-30	1354
2015-12-31	-1522
2016-03-31	-1271
2016-06-30	-1959
2016-09-30	-1941
2016-12-31	-1069
2017-03-31	-842
2017-06-30	1057
2017-09-30	1855
2017-12-31	-154
2018-03-31	-97
2018-06-30	211
2018-09-30	256
2018-12-31	-893
2019-03-31	-124
2019-06-30	-802
2019-09-30	-2017
2019-12-31	-1700
2020-03-31	567
2020-06-30	886
2020-09-30	-103
2020-12-31	-553
2021-03-31	-977
2021-06-30	239
2021-09-30	78
2021-12-31	-1013
2022-03-31	-886
2022-06-30	-174
2022-09-30	-1668
2022-12-31	-1154
2023-03-31	1183
2023-06-30	1769
2023-09-30	1574