Quarter	US dollars
2004-12-31	31
2005-03-31	30
2005-06-30	23
2005-09-30	62
2005-12-31	17
2006-03-31	43
2006-06-30	9
2006-09-30	9
2006-12-31	8
2007-03-31	10
2007-06-30	8
2007-09-30	8
2007-12-31	8
2008-03-31	6
2008-06-30	4
2008-09-30	5
2008-12-31	6
2009-03-31	7
2009-06-30	7
2009-09-30	5
2009-12-31	5
2010-03-31	3
2010-06-30	3
2010-09-30	2
2010-12-31	2
2011-03-31	398
2011-06-30	820
2011-09-30	798
2011-12-31	1068
2012-03-31	1162
2012-06-30	1131
2012-09-30	1473
2012-12-31	1698
2013-03-31	1753
2013-06-30	1412
2013-09-30	1388
2013-12-31	1506
2014-03-31	1486
2014-06-30	1525
2014-09-30	1333
2014-12-31	1330
2015-03-31	799
2015-06-30	774
2015-09-30	721
2015-12-31	799
2016-03-31	634
2016-06-30	647
2016-09-30	651
2016-12-31	626
2017-03-31	573
2017-06-30	652
2017-09-30	531
2017-12-31	558
2018-03-31	539
2018-06-30	490
2018-09-30	458
2018-12-31	483
2019-03-31	503
2019-06-30	547
2019-09-30	540
2019-12-31	638
2020-03-31	795
2020-06-30	765
2020-09-30	721
2020-12-31	543
2021-03-31	691
2021-06-30	775
2021-09-30	670
2021-12-31	644
2022-03-31	690
2022-06-30	596
2022-09-30	661
2022-12-31	690
2023-03-31	749
2023-06-30	818
2023-09-30	722