Quarter	US dollars
2004-12-31	12
2005-03-31	13
2005-06-30	14
2005-09-30	21
2005-12-31	12
2006-03-31	21
2006-06-30	4
2006-09-30	4
2006-12-31	6
2007-03-31	645
2007-06-30	664
2007-09-30	644
2007-12-31	679
2008-03-31	731
2008-06-30	653
2008-09-30	604
2008-12-31	602
2009-03-31	396
2009-06-30	389
2009-09-30	425
2009-12-31	541
2010-03-31	519
2010-06-30	558
2010-09-30	1142
2010-12-31	529
2011-03-31	577
2011-06-30	478
2011-09-30	514
2011-12-31	495
2012-03-31	676
2012-06-30	480
2012-09-30	651
2012-12-31	302
2013-03-31	263
2013-06-30	89
2013-09-30	63
2013-12-31	48
2014-03-31	48
2014-06-30	24
2014-09-30	73
2014-12-31	165
2015-03-31	371
2015-06-30	275
2015-09-30	220
2015-12-31	265
2016-03-31	196
2016-06-30	20
2016-09-30	58
2016-12-31	130
2017-03-31	209
2017-06-30	153
2017-09-30	83
2017-12-31	86
2018-03-31	48
2018-06-30	370
2018-09-30	376
2018-12-31	358
2019-03-31	66
2019-06-30	163
2019-09-30	211
2019-12-31	230
2020-03-31	397
2020-06-30	398
2020-09-30	52
2020-12-31	56
2021-03-31	46
2021-06-30	50
2021-09-30	59
2021-12-31	85
2022-03-31	75
2022-06-30	80
2022-09-30	72
2022-12-31	32
2023-03-31	9
2023-06-30	36
2023-09-30	32