Quarter	US dollars
2004-12-31	63
2005-03-31	42
2005-06-30	47
2005-09-30	35
2005-12-31	26
2006-03-31	21
2006-06-30	24
2006-09-30	19
2006-12-31	10
2007-03-31	18
2007-06-30	42
2007-09-30	53
2007-12-31	84
2008-03-31	199
2008-06-30	117
2008-09-30	148
2008-12-31	144
2009-03-31	95
2009-06-30	92
2009-09-30	96
2009-12-31	73
2010-03-31	123
2010-06-30	117
2010-09-30	109
2010-12-31	38
2011-03-31	38
2011-06-30	43
2011-09-30	50
2011-12-31	32
2012-03-31	43
2012-06-30	56
2012-09-30	57
2012-12-31	31
2013-03-31	46
2013-06-30	49
2013-09-30	32
2013-12-31	30
2014-03-31	80
2014-06-30	106
2014-09-30	151
2014-12-31	208
2015-03-31	264
2015-06-30	195
2015-09-30	194
2015-12-31	142
2016-03-31	178
2016-06-30	201
2016-09-30	190
2016-12-31	162
2017-03-31	134
2017-06-30	140
2017-09-30	134
2017-12-31	135
2018-03-31	107
2018-06-30	106
2018-09-30	99
2018-12-31	112
2019-03-31	129
2019-06-30	145
2019-09-30	185
2019-12-31	102
2020-03-31	208
2020-06-30	162
2020-09-30	40
2020-12-31	51
2021-03-31	21
2021-06-30	26
2021-09-30	49
2021-12-31	39
2022-03-31	42
2022-06-30	47
2022-09-30	66
2022-12-31	45
2023-03-31	28
2023-06-30	28
2023-09-30	45