Quarter	US dollars
2004-12-31	1582
2005-03-31	2221
2005-06-30	2047
2005-09-30	2545
2005-12-31	1724
2006-03-31	2173
2006-06-30	2469
2006-09-30	2797
2006-12-31	1820
2007-03-31	2538
2007-06-30	3339
2007-09-30	3209
2007-12-31	3496
2008-03-31	7044
2008-06-30	3857
2008-09-30	3010
2008-12-31	2568
2009-03-31	3497
2009-06-30	2103
2009-09-30	2508
2009-12-31	5434
2010-03-31	2160
2010-06-30	1584
2010-09-30	4328
2010-12-31	2586
2011-03-31	2324
2011-06-30	1052
2011-09-30	1002
2011-12-31	1005
2012-03-31	465
2012-06-30	176
2012-09-30	134
2012-12-31	719
2013-03-31	5530
2013-06-30	5912
2013-09-30	7318
2013-12-31	10008
2014-03-31	9997
2014-06-30	8718
2014-09-30	9362
2014-12-31	8425
2015-03-31	31
2015-06-30	178
2015-09-30	11
2015-12-31	579
2016-03-31	564
2016-06-30	31
2016-09-30	874
2016-12-31	1100
2017-03-31	1950
2017-06-30	1393
2017-09-30	2086
2017-12-31	2314
2018-03-31	4585
2018-06-30	5696
2018-09-30	6342
2018-12-31	7351
2019-03-31	5174
2019-06-30	4258
2019-09-30	2851
2019-12-31	2889
2020-03-31	3478
2020-06-30	722
2020-09-30	495
2020-12-31	762
2021-03-31	186
2021-06-30	254
2021-09-30	210
2021-12-31	240
2022-03-31	312
2022-06-30	338
2022-09-30	213
2022-12-31	350
2023-03-31	395
2023-06-30	209
2023-09-30	941