Quarter	US dollars
2004-12-31	1213
2005-03-31	1450
2005-06-30	2017
2005-09-30	2414
2005-12-31	2638
2006-03-31	2867
2006-06-30	3760
2006-09-30	3882
2006-12-31	4560
2007-03-31	9401
2007-06-30	9898
2007-09-30	13041
2007-12-31	13453
2008-03-31	14473
2008-06-30	18241
2008-09-30	14718
2008-12-31	12915
2009-03-31	11926
2009-06-30	11210
2009-09-30	11377
2009-12-31	11560
2010-03-31	11447
2010-06-30	11123
2010-09-30	12604
2010-12-31	10995
2011-03-31	11558
2011-06-30	14359
2011-09-30	13644
2011-12-31	13048
2012-03-31	1160
2012-06-30	1529
2012-09-30	945
2012-12-31	-1497
2013-03-31	-123
2013-06-30	-73
2013-09-30	-643
2013-12-31	-901
2014-03-31	-190
2014-06-30	101
2014-09-30	162
2014-12-31	233
2015-03-31	300
2015-06-30	245
2015-09-30	203
2015-12-31	348
2016-03-31	326
2016-06-30	291
2016-09-30	229
2016-12-31	122
2017-03-31	19
2017-06-30	-82
2017-09-30	7
2017-12-31	69
2018-03-31	32
2018-06-30	-13
2018-09-30	94
2018-12-31	103
2019-03-31	83
2019-06-30	52
2019-09-30	-175
2019-12-31	-177
2020-03-31	-156
2020-06-30	141
2020-09-30	-35
2020-12-31	-22
2021-03-31	77
2021-06-30	-77
2021-09-30	566
2021-12-31	15
2022-03-31	57
2022-06-30	69
2022-09-30	-10
2022-12-31	42
2023-03-31	85
2023-06-30	145
2023-09-30	121