Quarter	US dollars
2004-12-31	4
2005-03-31	4
2005-06-30	2
2005-09-30	0
2005-12-31	0
2006-03-31	2
2006-06-30	4
2006-09-30	0
2006-12-31	0
2007-03-31	0
2007-06-30	10
2007-09-30	96
2007-12-31	233
2008-03-31	141
2008-06-30	12
2008-09-30	12
2008-12-31	13
2009-03-31	47
2009-06-30	8
2009-09-30	3
2009-12-31	6
2010-03-31	0
2010-06-30	55
2010-09-30	169
2010-12-31	942
2011-03-31	682
2011-06-30	709
2011-09-30	5052
2011-12-31	5002
2012-03-31	9627
2012-06-30	9542
2012-09-30	8963
2012-12-31	10802
2013-03-31	10513
2013-06-30	10493
2013-09-30	9966
2013-12-31	7823
2014-03-31	7780
2014-06-30	6382
2014-09-30	6355
2014-12-31	5730
2015-03-31	5320
2015-06-30	4873
2015-09-30	4588
2015-12-31	3743
2016-03-31	3041
2016-06-30	2660
2016-09-30	2249
2016-12-31	1827
2017-03-31	1516
2017-06-30	1356
2017-09-30	1273
2017-12-31	1061
2018-03-31	958
2018-06-30	867
2018-09-30	421
2018-12-31	673
2019-03-31	676
2019-06-30	635
2019-09-30	557
2019-12-31	507
2020-03-31	428
2020-06-30	339
2020-09-30	336
2020-12-31	276
2021-03-31	277
2021-06-30	214
2021-09-30	213
2021-12-31	178
2022-03-31	263
2022-06-30	183
2022-09-30	198
2022-12-31	194
2023-03-31	189
2023-06-30	194
2023-09-30	218