Quarter	US dollars
2004-12-31	230
2005-03-31	176
2005-06-30	140
2005-09-30	140
2005-12-31	170
2006-03-31	321
2006-06-30	340
2006-09-30	295
2006-12-31	526
2007-03-31	420
2007-06-30	337
2007-09-30	236
2007-12-31	518
2008-03-31	244
2008-06-30	496
2008-09-30	454
2008-12-31	499
2009-03-31	400
2009-06-30	417
2009-09-30	368
2009-12-31	355
2010-03-31	331
2010-06-30	250
2010-09-30	164
2010-12-31	89
2011-03-31	112
2011-06-30	72
2011-09-30	100
2011-12-31	85
2012-03-31	83
2012-06-30	72
2012-09-30	68
2012-12-31	66
2013-03-31	44
2013-06-30	50
2013-09-30	50
2013-12-31	38
2014-03-31	18
2014-06-30	39
2014-09-30	76
2014-12-31	98
2015-03-31	110
2015-06-30	99
2015-09-30	97
2015-12-31	101
2016-03-31	70
2016-06-30	63
2016-09-30	66
2016-12-31	64
2017-03-31	64
2017-06-30	73
2017-09-30	66
2017-12-31	57
2018-03-31	34
2018-06-30	57
2018-09-30	57
2018-12-31	36
2019-03-31	-4
2019-06-30	41
2019-09-30	47
2019-12-31	16
2020-03-31	14
2020-06-30	1
2020-09-30	3
2020-12-31	11
2021-03-31	11
2021-06-30	11
2021-09-30	0
2021-12-31	24
2022-03-31	32
2022-06-30	19
2022-09-30	19
2022-12-31	22
2023-03-31	16
2023-06-30	9
2023-09-30	26