Quarter	US dollars
2004-12-31	127
2005-03-31	66
2005-06-30	57
2005-09-30	51
2005-12-31	46
2006-03-31	61
2006-06-30	76
2006-09-30	71
2006-12-31	70
2007-03-31	216
2007-06-30	209
2007-09-30	218
2007-12-31	328
2008-03-31	211
2008-06-30	225
2008-09-30	226
2008-12-31	210
2009-03-31	212
2009-06-30	252
2009-09-30	264
2009-12-31	221
2010-03-31	99
2010-06-30	141
2010-09-30	162
2010-12-31	150
2011-03-31	167
2011-06-30	167
2011-09-30	145
2011-12-31	135
2012-03-31	137
2012-06-30	130
2012-09-30	84
2012-12-31	133
2013-03-31	131
2013-06-30	77
2013-09-30	18
2013-12-31	84
2014-03-31	47
2014-06-30	82
2014-09-30	78
2014-12-31	75
2015-03-31	123
2015-06-30	132
2015-09-30	111
2015-12-31	124
2016-03-31	102
2016-06-30	73
2016-09-30	74
2016-12-31	65
2017-03-31	65
2017-06-30	51
2017-09-30	51
2017-12-31	3
2018-03-31	14
2018-06-30	12
2018-09-30	16
2018-12-31	14
2019-03-31	14
2019-06-30	17
2019-09-30	14
2019-12-31	17
2020-03-31	16
2020-06-30	19
2020-09-30	19
2020-12-31	16
2021-03-31	6
2021-06-30	4
2021-09-30	-7
2021-12-31	11
2022-03-31	9
2022-06-30	11
2022-09-30	14
2022-12-31	22
2023-03-31	17
2023-06-30	19
2023-09-30	25