Quarter	US dollars
1999-03-31	41
1999-06-30	10
1999-09-30	10
1999-12-31	15
2000-03-31	28
2000-06-30	61
2000-09-30	95
2000-12-31	91
2001-03-31	116
2001-06-30	114
2001-09-30	105
2001-12-31	125
2002-03-31	103
2002-06-30	77
2002-09-30	70
2002-12-31	43
2003-03-31	30
2003-06-30	39
2003-09-30	27
2003-12-31	22
2004-03-31	19
2004-06-30	31
2004-09-30	22
2004-12-31	19
2005-03-31	10
2005-06-30	26
2005-09-30	17
2005-12-31	18
2006-03-31	20
2006-06-30	19
2006-09-30	7
2006-12-31	15
2007-03-31	29
2007-06-30	23
2007-09-30	18
2007-12-31	27
2008-03-31	44
2008-06-30	27
2008-09-30	35
2008-12-31	46
2009-03-31	41
2009-06-30	80
2009-09-30	73
2009-12-31	53
2010-03-31	49
2010-06-30	49
2010-09-30	44
2010-12-31	72
2011-03-31	63
2011-06-30	59
2011-09-30	66
2011-12-31	40
2012-03-31	40
2012-06-30	44
2012-09-30	23
2012-12-31	24
2013-03-31	38
2013-06-30	44
2013-09-30	92
2013-12-31	34
2014-03-31	36
2014-06-30	21
2014-09-30	20
2014-12-31	26
2015-03-31	22
2015-06-30	19
2015-09-30	19
2015-12-31	21
2016-03-31	2
2016-06-30	12
2016-09-30	3
2016-12-31	5
2017-03-31	12
2017-06-30	2
2017-09-30	32
2017-12-31	64
2018-03-31	60
2018-06-30	59
2018-09-30	2
2018-12-31	11
2019-03-31	22
2019-06-30	82
2019-09-30	81
2019-12-31	57
2020-03-31	57
2020-06-30	77
2020-09-30	86
2020-12-31	70
2021-03-31	92
2021-06-30	99
2021-09-30	105
2021-12-31	102
2022-03-31	77
2022-06-30	63
2022-09-30	49
2022-12-31	23
2023-03-31	21
2023-06-30	124
2023-09-30	121