Quarter	US dollars
2004-12-31	-173
2005-03-31	-95
2005-06-30	-455
2005-09-30	1438
2005-12-31	-750
2006-03-31	47
2006-06-30	-982
2006-09-30	-1269
2006-12-31	-1493
2007-03-31	-475
2007-06-30	-2018
2007-09-30	2911
2007-12-31	-2353
2008-03-31	-1876
2008-06-30	-2559
2008-09-30	-2570
2008-12-31	-3732
2009-03-31	-3937
2009-06-30	-2594
2009-09-30	-542
2009-12-31	457
2010-03-31	1772
2010-06-30	3784
2010-09-30	4645
2010-12-31	4548
2011-03-31	4201
2011-06-30	4305
2011-09-30	3594
2011-12-31	2523
2012-03-31	4905
2012-06-30	3456
2012-09-30	1503
2012-12-31	3462
2013-03-31	3703
2013-06-30	5366
2013-09-30	7289
2013-12-31	4747
2014-03-31	3034
2014-06-30	4575
2014-09-30	6752
2014-12-31	5892
2015-03-31	6084
2015-06-30	6361
2015-09-30	4143
2015-12-31	6511
2016-03-31	8395
2016-06-30	10824
2016-09-30	11715
2016-12-31	11031
2017-03-31	13982
2017-06-30	12296
2017-09-30	10615
2017-12-31	7368
2018-03-31	8477
2018-06-30	11459
2018-09-30	13301
2018-12-31	15842
2019-03-31	16000
2019-06-30	16772
2019-09-30	17865
2019-12-31	16910
2020-03-31	22008
2020-06-30	16755
2020-09-30	18374
2020-12-31	16465
2021-03-31	23096
2021-06-30	21794
2021-09-30	21912
2021-12-31	20217
2022-03-31	23268
2022-06-30	21146
2022-09-30	24846
2022-12-31	23515
2023-03-31	25459
2023-06-30	27317
2023-09-30	26965