Quarter	US dollars
1999-09-30	400
1999-12-31	382
2000-03-31	49
2000-06-30	251
2000-09-30	223
2000-12-31	272
2001-03-31	14
2001-06-30	28
2001-09-30	19
2001-12-31	17
2002-03-31	33
2002-06-30	40
2002-09-30	27
2002-12-31	534
2003-03-31	375
2003-06-30	376
2003-09-30	1170
2003-12-31	1201
2004-03-31	1700
2004-06-30	1719
2004-09-30	1567
2004-12-31	1563
2005-03-31	1904
2005-06-30	1515
2005-09-30	1074
2005-12-31	1099
2006-03-31	1207
2006-06-30	1443
2006-09-30	1123
2006-12-31	1523
2007-03-31	700
2007-06-30	927
2007-09-30	937
2007-12-31	1177
2008-03-31	1332
2008-06-30	1192
2008-09-30	1495
2008-12-31	955
2009-03-31	734
2009-06-30	515
2009-09-30	462
2009-12-31	489
2010-03-31	576
2010-06-30	664
2010-09-30	581
2010-12-31	477
2011-03-31	281
2011-06-30	286
2011-09-30	511
2011-12-31	733
2012-03-31	294
2012-06-30	469
2012-09-30	375
2012-12-31	276
2013-03-31	355
2013-06-30	523
2013-09-30	429
2013-12-31	395
2014-03-31	353
2014-06-30	330
2014-09-30	657
2014-12-31	432
2015-03-31	459
2015-06-30	307
2015-09-30	239
2015-12-31	285
2016-03-31	306
2016-06-30	218
2016-09-30	142
2016-12-31	96
2017-03-31	64
2017-06-30	121
2017-09-30	144
2017-12-31	153
2018-03-31	710
2018-06-30	774
2018-09-30	819
2018-12-31	670
2019-03-31	128
2019-06-30	209
2019-09-30	207
2019-12-31	305
2020-03-31	227
2020-06-30	168
2020-09-30	154
2020-12-31	471
2021-03-31	168
2021-06-30	234
2021-09-30	77
2021-12-31	74
2022-03-31	265
2022-06-30	232
2022-09-30	90
2022-12-31	576
2023-03-31	346
2023-06-30	312
2023-09-30	335