Quarter	US dollars
1999-09-30	3
1999-12-31	3
2000-03-31	3
2000-06-30	0
2000-09-30	0
2000-12-31	43
2001-03-31	82
2001-06-30	45
2001-09-30	88
2001-12-31	55
2002-03-31	23
2002-06-30	49
2002-09-30	28
2002-12-31	39
2003-03-31	44
2003-06-30	46
2003-09-30	47
2003-12-31	52
2004-03-31	51
2004-06-30	47
2004-09-30	45
2004-12-31	42
2005-03-31	42
2005-06-30	36
2005-09-30	71
2005-12-31	26
2006-03-31	66
2006-06-30	28
2006-09-30	22
2006-12-31	25
2007-03-31	20
2007-06-30	30
2007-09-30	59
2007-12-31	74
2008-03-31	68
2008-06-30	58
2008-09-30	66
2008-12-31	116
2009-03-31	109
2009-06-30	194
2009-09-30	178
2009-12-31	36
2010-03-31	27
2010-06-30	31
2010-09-30	50
2010-12-31	17
2011-03-31	439
2011-06-30	865
2011-09-30	833
2011-12-31	1101
2012-03-31	1191
2012-06-30	1159
2012-09-30	1513
2012-12-31	1746
2013-03-31	1794
2013-06-30	1638
2013-09-30	1556
2013-12-31	1679
2014-03-31	1651
2014-06-30	1742
2014-09-30	1500
2014-12-31	1516
2015-03-31	1050
2015-06-30	953
2015-09-30	830
2015-12-31	911
2016-03-31	740
2016-06-30	708
2016-09-30	713
2016-12-31	673
2017-03-31	629
2017-06-30	725
2017-09-30	589
2017-12-31	586
2018-03-31	563
2018-06-30	502
2018-09-30	516
2018-12-31	517
2019-03-31	530
2019-06-30	583
2019-09-30	590
2019-12-31	680
2020-03-31	841
2020-06-30	818
2020-09-30	773
2020-12-31	568
2021-03-31	737
2021-06-30	815
2021-09-30	707
2021-12-31	693
2022-03-31	695
2022-06-30	656
2022-09-30	689
2022-12-31	692
2023-03-31	761
2023-06-30	832
2023-09-30	770