Quarter	US dollars
2004-12-31	307
2005-03-31	297
2005-06-30	281
2005-09-30	288
2005-12-31	261
2006-03-31	246
2006-06-30	272
2006-09-30	247
2006-12-31	258
2007-03-31	263
2007-06-30	14
2007-09-30	96
2007-12-31	106
2008-03-31	117
2008-06-30	12
2008-09-30	169
2008-12-31	158
2009-03-31	136
2009-06-30	140
2009-09-30	144
2009-12-31	155
2010-03-31	200
2010-06-30	160
2010-09-30	243
2010-12-31	362
2011-03-31	434
2011-06-30	364
2011-09-30	399
2011-12-31	442
2012-03-31	459
2012-06-30	453
2012-09-30	472
2012-12-31	479
2013-03-31	504
2013-06-30	501
2013-09-30	499
2013-12-31	33
2014-03-31	33
2014-06-30	36
2014-09-30	34
2014-12-31	31
2015-03-31	28
2015-06-30	28
2015-09-30	27
2015-12-31	30
2016-03-31	30
2016-06-30	30
2016-09-30	29
2016-12-31	32
2017-03-31	33
2017-06-30	30
2017-09-30	11
2017-12-31	11
2018-03-31	7
2018-06-30	5
2018-09-30	13
2018-12-31	6
2019-03-31	1
2019-06-30	6
2019-09-30	4
2019-12-31	3
2020-03-31	4
2020-06-30	4
2020-09-30	4
2020-12-31	4
2021-03-31	0
2021-06-30	3
2021-09-30	0
2021-12-31	0
2022-03-31	0
2022-06-30	0
2022-09-30	-5
2022-12-31	6
2023-03-31	4
2023-06-30	3
2023-09-30	4