Quarter	US dollars
2004-12-31	4932
2005-03-31	5044
2005-06-30	4146
2005-09-30	4123
2005-12-31	4101
2006-03-31	5890
2006-06-30	5273
2006-09-30	5166
2006-12-31	8736
2007-03-31	6078
2007-06-30	5819
2007-09-30	6597
2007-12-31	4362
2008-03-31	3917
2008-06-30	4886
2008-09-30	3632
2008-12-31	2559
2009-03-31	2357
2009-06-30	1945
2009-09-30	1398
2009-12-31	1471
2010-03-31	499
2010-06-30	408
2010-09-30	257
2010-12-31	520
2011-03-31	399
2011-06-30	342
2011-09-30	221
2011-12-31	94
2012-03-31	46
2012-06-30	111
2012-09-30	18
2012-12-31	23
2013-03-31	20
2013-06-30	9
2013-09-30	36
2013-12-31	17
2014-03-31	10
2014-06-30	10
2014-09-30	10
2014-12-31	6
2015-03-31	28
2015-06-30	20
2015-09-30	26
2015-12-31	15
2016-03-31	16
2016-06-30	91
2016-09-30	169
2016-12-31	116
2017-03-31	134
2017-06-30	182
2017-09-30	13
2017-12-31	116
2018-03-31	394
2018-06-30	3
2018-09-30	13
2018-12-31	192
2019-03-31	218
2019-06-30	14
2019-09-30	21
2019-12-31	18
2020-03-31	21
2020-06-30	57
2020-09-30	67
2020-12-31	67
2021-03-31	102
2021-06-30	142
2021-09-30	142
2021-12-31	162
2022-03-31	176
2022-06-30	150
2022-09-30	124
2022-12-31	119
2023-03-31	101
2023-06-30	86
2023-09-30	89