Quarter	US dollars
2004-12-31	6
2005-03-31	8
2005-06-30	11
2005-09-30	2
2005-12-31	5
2006-03-31	21
2006-06-30	18
2006-09-30	21
2006-12-31	434
2007-03-31	80
2007-06-30	128
2007-09-30	163
2007-12-31	127
2008-03-31	129
2008-06-30	98
2008-09-30	128
2008-12-31	115
2009-03-31	138
2009-06-30	156
2009-09-30	144
2009-12-31	97
2010-03-31	167
2010-06-30	67
2010-09-30	430
2010-12-31	617
2011-03-31	149
2011-06-30	165
2011-09-30	171
2011-12-31	153
2012-03-31	128
2012-06-30	111
2012-09-30	360
2012-12-31	372
2013-03-31	393
2013-06-30	446
2013-09-30	881
2013-12-31	899
2014-03-31	855
2014-06-30	898
2014-09-30	814
2014-12-31	729
2015-03-31	717
2015-06-30	656
2015-09-30	566
2015-12-31	529
2016-03-31	656
2016-06-30	658
2016-09-30	438
2016-12-31	452
2017-03-31	445
2017-06-30	66
2017-09-30	24
2017-12-31	73
2018-03-31	84
2018-06-30	63
2018-09-30	60
2018-12-31	32
2019-03-31	36
2019-06-30	33
2019-09-30	44
2019-12-31	7
2020-03-31	12
2020-06-30	73
2020-09-30	37
2020-12-31	89
2021-03-31	3
2021-06-30	4
2021-09-30	4
2021-12-31	1
2022-03-31	0
2022-06-30	10
2022-09-30	13
2022-12-31	10
2023-03-31	15
2023-06-30	12
2023-09-30	13