Quarter	US dollars
1999-09-30	0
1999-12-31	3
2000-03-31	2
2000-06-30	3
2000-09-30	0
2000-12-31	0
2001-03-31	1
2001-06-30	0
2001-09-30	0
2001-12-31	0
2002-03-31	14
2002-06-30	6
2002-09-30	14
2002-12-31	16
2003-03-31	14
2003-06-30	15
2003-09-30	23
2003-12-31	52
2004-03-31	243
2004-06-30	267
2004-09-30	362
2004-12-31	298
2005-03-31	321
2005-06-30	346
2005-09-30	439
2005-12-31	311
2006-03-31	321
2006-06-30	272
2006-09-30	306
2006-12-31	427
2007-03-31	563
2007-06-30	520
2007-09-30	862
2007-12-31	1011
2008-03-31	1091
2008-06-30	734
2008-09-30	1053
2008-12-31	1139
2009-03-31	1065
2009-06-30	1041
2009-09-30	1267
2009-12-31	954
2010-03-31	546
2010-06-30	570
2010-09-30	611
2010-12-31	510
2011-03-31	511
2011-06-30	560
2011-09-30	513
2011-12-31	400
2012-03-31	1215
2012-06-30	519
2012-09-30	874
2012-12-31	804
2013-03-31	252
2013-06-30	369
2013-09-30	415
2013-12-31	374
2014-03-31	55
2014-06-30	51
2014-09-30	45
2014-12-31	48
2015-03-31	58
2015-06-30	107
2015-09-30	114
2015-12-31	39
2016-03-31	104
2016-06-30	91
2016-09-30	43
2016-12-31	26
2017-03-31	23
2017-06-30	31
2017-09-30	46
2017-12-31	38
2018-03-31	42
2018-06-30	0
2018-09-30	20
2018-12-31	11
2019-03-31	10
2019-06-30	11
2019-09-30	31
2019-12-31	22
2020-03-31	64
2020-06-30	61
2020-09-30	54
2020-12-31	55
2021-03-31	58
2021-06-30	62
2021-09-30	35
2021-12-31	30
2022-03-31	54
2022-06-30	96
2022-09-30	124
2022-12-31	76
2023-03-31	71
2023-06-30	101
2023-09-30	89