Quarter	US dollars
2004-12-31	3035
2005-03-31	4253
2005-06-30	7351
2005-09-30	6318
2005-12-31	4706
2006-03-31	5627
2006-06-30	4477
2006-09-30	4904
2006-12-31	4190
2007-03-31	4270
2007-06-30	3993
2007-09-30	3445
2007-12-31	3848
2008-03-31	6694
2008-06-30	5045
2008-09-30	4257
2008-12-31	3355
2009-03-31	3606
2009-06-30	3109
2009-09-30	3170
2009-12-31	5471
2010-03-31	2973
2010-06-30	2473
2010-09-30	2718
2010-12-31	1894
2011-03-31	2077
2011-06-30	1540
2011-09-30	1616
2011-12-31	1599
2012-03-31	1131
2012-06-30	2776
2012-09-30	2928
2012-12-31	3397
2013-03-31	8324
2013-06-30	8569
2013-09-30	9977
2013-12-31	13131
2014-03-31	13473
2014-06-30	11809
2014-09-30	12284
2014-12-31	11202
2015-03-31	2493
2015-06-30	2710
2015-09-30	3084
2015-12-31	3401
2016-03-31	3333
2016-06-30	2265
2016-09-30	3484
2016-12-31	3612
2017-03-31	4144
2017-06-30	3568
2017-09-30	4293
2017-12-31	4857
2018-03-31	5212
2018-06-30	6075
2018-09-30	6502
2018-12-31	7872
2019-03-31	5792
2019-06-30	4801
2019-09-30	3456
2019-12-31	3711
2020-03-31	4264
2020-06-30	1456
2020-09-30	1260
2020-12-31	1376
2021-03-31	882
2021-06-30	1009
2021-09-30	874
2021-12-31	956
2022-03-31	1015
2022-06-30	588
2022-09-30	1056
2022-12-31	711
2023-03-31	780
2023-06-30	378
2023-09-30	1148