Quarter	US dollars
2004-12-31	376
2005-03-31	507
2005-06-30	534
2005-09-30	600
2005-12-31	594
2006-03-31	678
2006-06-30	668
2006-09-30	665
2006-12-31	779
2007-03-31	1136
2007-06-30	1112
2007-09-30	1430
2007-12-31	1718
2008-03-31	1763
2008-06-30	1578
2008-09-30	1613
2008-12-31	1613
2009-03-31	1397
2009-06-30	1490
2009-09-30	1547
2009-12-31	1511
2010-03-31	1339
2010-06-30	1881
2010-09-30	1776
2010-12-31	1954
2011-03-31	2231
2011-06-30	2105
2011-09-30	2181
2011-12-31	2523
2012-03-31	2875
2012-06-30	3223
2012-09-30	3126
2012-12-31	3256
2013-03-31	3616
2013-06-30	3441
2013-09-30	3315
2013-12-31	3256
2014-03-31	3516
2014-06-30	3344
2014-09-30	3711
2014-12-31	3730
2015-03-31	3746
2015-06-30	3445
2015-09-30	3420
2015-12-31	3182
2016-03-31	3114
2016-06-30	3046
2016-09-30	3172
2016-12-31	3135
2017-03-31	3068
2017-06-30	3289
2017-09-30	3549
2017-12-31	3929
2018-03-31	4296
2018-06-30	4357
2018-09-30	4087
2018-12-31	4671
2019-03-31	4511
2019-06-30	4384
2019-09-30	4594
2019-12-31	5045
2020-03-31	5120
2020-06-30	4761
2020-09-30	4742
2020-12-31	5168
2021-03-31	5128
2021-06-30	5967
2021-09-30	5675
2021-12-31	5332
2022-03-31	5575
2022-06-30	5944
2022-09-30	6191
2022-12-31	6230
2023-03-31	6554
2023-06-30	6178
2023-09-30	6026