Quarter	US dollars
1999-03-31	65
1999-06-30	66
1999-09-30	91
1999-12-31	106
2000-03-31	98
2000-06-30	97
2000-09-30	89
2000-12-31	86
2001-03-31	109
2001-06-30	113
2001-09-30	124
2001-12-31	114
2002-03-31	111
2002-06-30	96
2002-09-30	85
2002-12-31	96
2003-03-31	97
2003-06-30	68
2003-09-30	83
2003-12-31	122
2004-03-31	135
2004-06-30	101
2004-09-30	93
2004-12-31	152
2005-03-31	187
2005-06-30	137
2005-09-30	108
2005-12-31	71
2006-03-31	28
2006-06-30	143
2006-09-30	138
2006-12-31	203
2007-03-31	188
2007-06-30	238
2007-09-30	230
2007-12-31	125
2008-03-31	76
2008-06-30	71
2008-09-30	148
2008-12-31	6
2009-03-31	7
2009-06-30	7
2009-09-30	12
2009-12-31	8
2010-03-31	8
2010-06-30	9
2010-09-30	7
2010-12-31	5
2011-03-31	12
2011-06-30	7
2011-09-30	12
2011-12-31	51
2012-03-31	10
2012-06-30	13
2012-09-30	24
2012-12-31	23
2013-03-31	47
2013-06-30	38
2013-09-30	43
2013-12-31	56
2014-03-31	59
2014-06-30	42
2014-09-30	66
2014-12-31	25
2015-03-31	24
2015-06-30	15
2015-09-30	14
2015-12-31	23
2016-03-31	19
2016-06-30	10
2016-09-30	14
2016-12-31	27
2017-03-31	55
2017-06-30	33
2017-09-30	32
2017-12-31	34
2018-03-31	24
2018-06-30	24
2018-09-30	40
2018-12-31	56
2019-03-31	39
2019-06-30	19
2019-09-30	20
2019-12-31	40
2020-03-31	23
2020-06-30	19
2020-09-30	18
2020-12-31	18
2021-03-31	57
2021-06-30	19
2021-09-30	21
2021-12-31	23
2022-03-31	29
2022-06-30	29
2022-09-30	23
2022-12-31	24
2023-03-31	45
2023-06-30	78
2023-09-30	110