Quarter	US dollars
2004-12-31	15
2005-03-31	28
2005-06-30	47
2005-09-30	37
2005-12-31	88
2006-03-31	88
2006-06-30	115
2006-09-30	50
2006-12-31	155
2007-03-31	186
2007-06-30	187
2007-09-30	214
2007-12-31	203
2008-03-31	219
2008-06-30	233
2008-09-30	456
2008-12-31	137
2009-03-31	142
2009-06-30	155
2009-09-30	130
2009-12-31	-245
2010-03-31	-362
2010-06-30	-102
2010-09-30	-63
2010-12-31	64
2011-03-31	75
2011-06-30	-63
2011-09-30	-157
2011-12-31	130
2012-03-31	80
2012-06-30	108
2012-09-30	265
2012-12-31	383
2013-03-31	126
2013-06-30	265
2013-09-30	186
2013-12-31	175
2014-03-31	93
2014-06-30	527
2014-09-30	462
2014-12-31	571
2015-03-31	647
2015-06-30	694
2015-09-30	683
2015-12-31	710
2016-03-31	717
2016-06-30	736
2016-09-30	666
2016-12-31	663
2017-03-31	665
2017-06-30	665
2017-09-30	110
2017-12-31	62
2018-03-31	67
2018-06-30	572
2018-09-30	546
2018-12-31	552
2019-03-31	517
2019-06-30	403
2019-09-30	377
2019-12-31	386
2020-03-31	399
2020-06-30	360
2020-09-30	349
2020-12-31	45
2021-03-31	22
2021-06-30	22
2021-09-30	22
2021-12-31	16
2022-03-31	16
2022-06-30	17
2022-09-30	15
2022-12-31	17
2023-03-31	17
2023-06-30	18
2023-09-30	17