Quarter	US dollars
2004-12-31	2
2005-03-31	2
2005-06-30	2
2005-09-30	2
2005-12-31	0
2006-03-31	0
2006-06-30	4
2006-09-30	4
2006-12-31	8
2007-03-31	2
2007-06-30	14
2007-09-30	45
2007-12-31	54
2008-03-31	50
2008-06-30	42
2008-09-30	46
2008-12-31	79
2009-03-31	77
2009-06-30	105
2009-09-30	162
2009-12-31	24
2010-03-31	5
2010-06-30	7
2010-09-30	11
2010-12-31	9
2011-03-31	234
2011-06-30	535
2011-09-30	488
2011-12-31	724
2012-03-31	815
2012-06-30	764
2012-09-30	1019
2012-12-31	1230
2013-03-31	1208
2013-06-30	39
2013-09-30	42
2013-12-31	45
2014-03-31	48
2014-06-30	38
2014-09-30	8
2014-12-31	8
2015-03-31	25
2015-06-30	11
2015-09-30	12
2015-12-31	12
2016-03-31	7
2016-06-30	101
2016-09-30	100
2016-12-31	182
2017-03-31	201
2017-06-30	242
2017-09-30	178
2017-12-31	22
2018-03-31	173
2018-06-30	100
2018-09-30	121
2018-12-31	186
2019-03-31	152
2019-06-30	165
2019-09-30	179
2019-12-31	123
2020-03-31	283
2020-06-30	132
2020-09-30	101
2020-12-31	109
2021-03-31	200
2021-06-30	174
2021-09-30	1
2021-12-31	1
2022-03-31	1
2022-06-30	19
2022-09-30	3
2022-12-31	1
2023-03-31	10
2023-06-30	10
2023-09-30	17