Quarter	US dollars
2004-12-31	12
2005-03-31	13
2005-06-30	9
2005-09-30	180
2005-12-31	153
2006-03-31	215
2006-06-30	266
2006-09-30	256
2006-12-31	252
2007-03-31	257
2007-06-30	269
2007-09-30	224
2007-12-31	303
2008-03-31	248
2008-06-30	281
2008-09-30	292
2008-12-31	265
2009-03-31	242
2009-06-30	277
2009-09-30	293
2009-12-31	284
2010-03-31	228
2010-06-30	260
2010-09-30	293
2010-12-31	326
2011-03-31	343
2011-06-30	368
2011-09-30	427
2011-12-31	456
2012-03-31	409
2012-06-30	394
2012-09-30	394
2012-12-31	464
2013-03-31	504
2013-06-30	441
2013-09-30	484
2013-12-31	474
2014-03-31	472
2014-06-30	393
2014-09-30	460
2014-12-31	588
2015-03-31	534
2015-06-30	497
2015-09-30	580
2015-12-31	513
2016-03-31	497
2016-06-30	1
2016-09-30	0
2016-12-31	16
2017-03-31	16
2017-06-30	0
2017-09-30	0
2017-12-31	14
2018-03-31	142
2018-06-30	139
2018-09-30	140
2018-12-31	137
2019-03-31	145
2019-06-30	135
2019-09-30	134
2019-12-31	132
2020-03-31	133
2020-06-30	130
2020-09-30	131
2020-12-31	128
2021-03-31	172
2021-06-30	43
2021-09-30	44
2021-12-31	43
2022-03-31	43
2022-06-30	44
2022-09-30	44
2022-12-31	45
2023-03-31	44
2023-06-30	43
2023-09-30	44