Quarter	US dollars
2004-12-31	4587
2005-03-31	5246
2005-06-30	6856
2005-09-30	3898
2005-12-31	5670
2006-03-31	7606
2006-06-30	9473
2006-09-30	9055
2006-12-31	6558
2007-03-31	16944
2007-06-30	22961
2007-09-30	11081
2007-12-31	6715
2008-03-31	12579
2008-06-30	10159
2008-09-30	1718
2008-12-31	2483
2009-03-31	7997
2009-06-30	12623
2009-09-30	4740
2009-12-31	6923
2010-03-31	10441
2010-06-30	15224
2010-09-30	10706
2010-12-31	6487
2011-03-31	4044
2011-06-30	8664
2011-09-30	7039
2011-12-31	7172
2012-03-31	5624
2012-06-30	3114
2012-09-30	3882
2012-12-31	2485
2013-03-31	3083
2013-06-30	3811
2013-09-30	2531
2013-12-31	1760
2014-03-31	4910
2014-06-30	5557
2014-09-30	8544
2014-12-31	7551
2015-03-31	8656
2015-06-30	3413
2015-09-30	3532
2015-12-31	1735
2016-03-31	1620
2016-06-30	1787
2016-09-30	2405
2016-12-31	3495
2017-03-31	4526
2017-06-30	3097
2017-09-30	3158
2017-12-31	4203
2018-03-31	8170
2018-06-30	5209
2018-09-30	5334
2018-12-31	9180
2019-03-31	11250
2019-06-30	8711
2019-09-30	8572
2019-12-31	7400
2020-03-31	9508
2020-06-30	9518
2020-09-30	6776
2020-12-31	12150
2021-03-31	12229
2021-06-30	11537
2021-09-30	11016
2021-12-31	12682
2022-03-31	14643
2022-06-30	11554
2022-09-30	13753
2022-12-31	6328
2023-03-31	16412
2023-06-30	13214
2023-09-30	14085