Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	0
2005-12-31	10
2006-03-31	7
2006-06-30	7
2006-09-30	6
2006-12-31	2
2007-03-31	10
2007-06-30	12
2007-09-30	4
2007-12-31	0
2008-03-31	6
2008-06-30	10
2008-09-30	274
2008-12-31	303
2009-03-31	285
2009-06-30	333
2009-09-30	358
2009-12-31	304
2010-03-31	302
2010-06-30	193
2010-09-30	170
2010-12-31	175
2011-03-31	159
2011-06-30	244
2011-09-30	165
2011-12-31	438
2012-03-31	297
2012-06-30	205
2012-09-30	0
2012-12-31	2
2013-03-31	9
2013-06-30	-3
2013-09-30	0
2013-12-31	5
2014-03-31	3
2014-06-30	-2
2014-09-30	2
2014-12-31	0
2015-03-31	0
2015-06-30	2
2015-09-30	2
2015-12-31	0
2016-03-31	0
2016-06-30	3
2016-09-30	-3
2016-12-31	0
2017-03-31	19
2017-06-30	19
2017-09-30	20
2017-12-31	8
2018-03-31	21
2018-06-30	21
2018-09-30	20
2018-12-31	26
2019-03-31	94
2019-06-30	95
2019-09-30	142
2019-12-31	236
2020-03-31	287
2020-06-30	325
2020-09-30	344
2020-12-31	345
2021-03-31	348
2021-06-30	358
2021-09-30	363
2021-12-31	358
2022-03-31	350
2022-06-30	329
2022-09-30	330
2022-12-31	328
2023-03-31	406
2023-06-30	362
2023-09-30	283