Quarter	US dollars
2004-12-31	96
2005-03-31	81
2005-06-30	97
2005-09-30	80
2005-12-31	76
2006-03-31	69
2006-06-30	98
2006-09-30	123
2006-12-31	127
2007-03-31	114
2007-06-30	110
2007-09-30	106
2007-12-31	131
2008-03-31	199
2008-06-30	406
2008-09-30	453
2008-12-31	569
2009-03-31	678
2009-06-30	539
2009-09-30	513
2009-12-31	452
2010-03-31	423
2010-06-30	522
2010-09-30	553
2010-12-31	543
2011-03-31	394
2011-06-30	422
2011-09-30	575
2011-12-31	510
2012-03-31	561
2012-06-30	472
2012-09-30	363
2012-12-31	417
2013-03-31	370
2013-06-30	288
2013-09-30	277
2013-12-31	369
2014-03-31	245
2014-06-30	280
2014-09-30	305
2014-12-31	297
2015-03-31	292
2015-06-30	231
2015-09-30	224
2015-12-31	179
2016-03-31	164
2016-06-30	173
2016-09-30	125
2016-12-31	109
2017-03-31	100
2017-06-30	78
2017-09-30	79
2017-12-31	150
2018-03-31	171
2018-06-30	61
2018-09-30	102
2018-12-31	100
2019-03-31	52
2019-06-30	83
2019-09-30	84
2019-12-31	79
2020-03-31	125
2020-06-30	79
2020-09-30	79
2020-12-31	71
2021-03-31	51
2021-06-30	41
2021-09-30	24
2021-12-31	40
2022-03-31	22
2022-06-30	24
2022-09-30	35
2022-12-31	42
2023-03-31	37
2023-06-30	33
2023-09-30	36