Quarter	US dollars
2004-12-31	40
2005-03-31	42
2005-06-30	47
2005-09-30	48
2005-12-31	65
2006-03-31	80
2006-06-30	55
2006-09-30	49
2006-12-31	72
2007-03-31	92
2007-06-30	118
2007-09-30	132
2007-12-31	115
2008-03-31	211
2008-06-30	251
2008-09-30	216
2008-12-31	188
2009-03-31	185
2009-06-30	212
2009-09-30	218
2009-12-31	212
2010-03-31	221
2010-06-30	233
2010-09-30	362
2010-12-31	362
2011-03-31	369
2011-06-30	328
2011-09-30	316
2011-12-31	308
2012-03-31	320
2012-06-30	242
2012-09-30	241
2012-12-31	239
2013-03-31	237
2013-06-30	202
2013-09-30	201
2013-12-31	190
2014-03-31	158
2014-06-30	145
2014-09-30	160
2014-12-31	75
2015-03-31	64
2015-06-30	80
2015-09-30	92
2015-12-31	98
2016-03-31	99
2016-06-30	30
2016-09-30	22
2016-12-31	27
2017-03-31	24
2017-06-30	21
2017-09-30	17
2017-12-31	20
2018-03-31	18
2018-06-30	15
2018-09-30	9
2018-12-31	13
2019-03-31	17
2019-06-30	15
2019-09-30	20
2019-12-31	22
2020-03-31	21
2020-06-30	17
2020-09-30	30
2020-12-31	34
2021-03-31	37
2021-06-30	40
2021-09-30	42
2021-12-31	32
2022-03-31	33
2022-06-30	30
2022-09-30	25
2022-12-31	26
2023-03-31	25
2023-06-30	24
2023-09-30	23