Quarter	US dollars
2004-12-31	48
2005-03-31	40
2005-06-30	32
2005-09-30	39
2005-12-31	43
2006-03-31	52
2006-06-30	70
2006-09-30	88
2006-12-31	94
2007-03-31	122
2007-06-30	126
2007-09-30	145
2007-12-31	149
2008-03-31	189
2008-06-30	195
2008-09-30	164
2008-12-31	128
2009-03-31	123
2009-06-30	135
2009-09-30	144
2009-12-31	131
2010-03-31	118
2010-06-30	120
2010-09-30	117
2010-12-31	135
2011-03-31	114
2011-06-30	164
2011-09-30	167
2011-12-31	195
2012-06-30	218
2012-09-30	273
2012-12-31	314
2013-03-31	241
2013-06-30	264
2013-09-30	345
2013-12-31	274
2014-03-31	287
2014-06-30	299
2014-09-30	259
2014-12-31	265
2015-03-31	220
2015-06-30	217
2015-09-30	201
2015-12-31	160
2016-03-31	108
2016-06-30	87
2016-09-30	70
2016-12-31	53
2017-03-31	65
2017-06-30	58
2017-09-30	59
2017-12-31	70
2018-03-31	52
2018-06-30	37
2018-09-30	42
2018-12-31	32
2019-03-31	30
2019-06-30	27
2019-09-30	44
2019-12-31	59
2020-03-31	58
2020-06-30	53
2020-09-30	45
2020-12-31	42
2021-03-31	61
2021-06-30	57
2021-09-30	58
2021-12-31	49
2022-03-31	38
2022-06-30	21
2022-09-30	19
2022-12-31	18
2023-03-31	19
2023-06-30	18
2023-09-30	27