Quarter	US dollars
2004-12-31	434
2005-03-31	509
2005-06-30	531
2005-09-30	610
2005-12-31	436
2006-03-31	307
2006-06-30	446
2006-09-30	491
2006-12-31	376
2007-03-31	430
2007-06-30	534
2007-09-30	405
2007-12-31	504
2008-03-31	672
2008-06-30	724
2008-12-31	743
2009-09-30	381
2010-06-30	317
2010-09-30	643
2010-12-31	551
2011-06-30	665
2011-09-30	754
2012-06-30	858
2012-09-30	930
2013-03-31	621
2013-06-30	783
2014-03-31	539
2014-06-30	487
2014-12-31	315
2015-03-31	407
2015-06-30	543
2015-09-30	480
2015-12-31	369
2016-03-31	1340
2016-06-30	1378
2016-09-30	368
2016-12-31	438
2017-03-31	339
2017-06-30	486
2017-09-30	1010
2017-12-31	935
2018-03-31	2271
2018-06-30	2053
2018-09-30	1784
2018-12-31	1964
2019-03-31	1283
2019-06-30	1278
2019-09-30	489
2019-12-31	605
2020-03-31	459
2020-06-30	397
2020-09-30	367
2020-12-31	397
2021-03-31	328
2021-06-30	384
2021-09-30	375
2021-12-31	454
2022-03-31	633
2022-06-30	624
2022-09-30	657
2022-12-31	250
2023-03-31	297
2023-06-30	279
2023-09-30	209