Quarter	US dollars
1999-03-31	218
1999-06-30	323
1999-09-30	223
1999-12-31	103
2000-03-31	62
2000-06-30	118
2000-09-30	103
2000-12-31	98
2001-03-31	40
2001-06-30	39
2001-09-30	82
2001-12-31	96
2002-03-31	224
2002-06-30	213
2002-09-30	239
2002-12-31	249
2003-03-31	256
2003-06-30	134
2003-09-30	96
2003-12-31	111
2004-03-31	18
2004-06-30	8
2004-09-30	7
2004-12-31	4
2005-03-31	8
2005-06-30	11
2005-09-30	12
2005-12-31	55
2006-03-31	6
2006-06-30	7
2006-09-30	24
2006-12-31	13
2007-03-31	49
2007-06-30	175
2007-09-30	98
2007-12-31	180
2008-03-31	404
2008-06-30	482
2008-09-30	366
2008-12-31	152
2009-03-31	91
2009-06-30	80
2009-09-30	100
2009-12-31	177
2010-03-31	176
2010-06-30	126
2010-09-30	83
2010-12-31	80
2011-03-31	87
2011-06-30	99
2011-09-30	88
2011-12-31	182
2012-03-31	126
2012-06-30	15
2012-09-30	154
2012-12-31	350
2013-03-31	232
2013-06-30	265
2013-09-30	162
2013-12-31	196
2014-03-31	162
2014-06-30	278
2014-09-30	217
2014-12-31	402
2015-03-31	477
2015-06-30	363
2015-09-30	306
2015-12-31	453
2016-03-31	375
2016-06-30	381
2016-09-30	338
2016-12-31	365
2017-03-31	225
2017-06-30	167
2017-09-30	302
2017-12-31	261
2018-03-31	162
2018-06-30	99
2018-09-30	110
2018-12-31	154
2019-03-31	194
2019-06-30	174
2019-09-30	139
2019-12-31	125
2020-03-31	113
2020-06-30	115
2020-09-30	107
2020-12-31	127
2021-03-31	102
2021-06-30	107
2021-09-30	69
2021-12-31	63
2022-03-31	135
2022-06-30	1345
2022-09-30	159
2022-12-31	122
2023-03-31	150
2023-06-30	336
2023-09-30	317