Quarter	US dollars
2004-12-31	17
2005-03-31	6
2005-06-30	7
2005-09-30	7
2005-12-31	7
2006-03-31	9
2006-06-30	6
2006-09-30	6
2006-12-31	4
2007-03-31	10
2007-06-30	20
2007-09-30	26
2007-12-31	34
2008-03-31	42
2008-06-30	42
2008-09-30	37
2008-12-31	56
2009-03-31	47
2009-06-30	99
2009-09-30	43
2009-12-31	37
2010-03-31	38
2010-06-30	46
2010-09-30	44
2010-12-31	31
2011-03-31	229
2011-06-30	334
2011-09-30	368
2011-12-31	385
2012-03-31	380
2012-06-30	398
2012-09-30	507
2012-12-31	522
2013-03-31	589
2013-06-30	689
2013-09-30	771
2013-12-31	688
2014-03-31	564
2014-06-30	764
2014-09-30	712
2014-12-31	724
2015-03-31	719
2015-06-30	621
2015-09-30	527
2015-12-31	501
2016-03-31	446
2016-06-30	329
2016-09-30	339
2016-12-31	335
2017-03-31	309
2017-06-30	349
2017-09-30	325
2017-12-31	546
2018-03-31	307
2018-06-30	292
2018-09-30	287
2018-12-31	271
2019-03-31	281
2019-06-30	281
2019-09-30	312
2019-12-31	341
2020-03-31	342
2020-06-30	351
2020-09-30	376
2020-12-31	349
2021-03-31	335
2021-06-30	329
2021-09-30	340
2021-12-31	358
2022-03-31	265
2022-06-30	278
2022-09-30	284
2022-12-31	276
2023-03-31	235
2023-06-30	234
2023-09-30	241