Quarter	US dollars
1999-03-31	38
1999-06-30	39
1999-09-30	29
1999-12-31	35
2000-03-31	40
2000-06-30	46
2000-09-30	28
2000-12-31	25
2001-03-31	22
2001-06-30	20
2001-09-30	17
2001-12-31	26
2002-03-31	16
2002-06-30	30
2002-09-30	19
2002-12-31	23
2003-03-31	22
2003-06-30	23
2003-09-30	25
2003-12-31	35
2004-03-31	22
2004-06-30	14
2004-09-30	63
2004-12-31	111
2005-03-31	95
2005-06-30	125
2005-09-30	152
2005-12-31	148
2006-03-31	146
2006-06-30	380
2006-09-30	370
2006-12-31	380
2007-03-31	545
2007-06-30	572
2007-09-30	743
2007-12-31	775
2008-03-31	743
2008-06-30	748
2008-09-30	663
2008-12-31	575
2009-03-31	386
2009-06-30	423
2009-09-30	402
2009-12-31	352
2010-03-31	197
2010-06-30	210
2010-09-30	234
2010-12-31	170
2011-03-31	197
2011-06-30	44
2011-09-30	65
2011-12-31	67
2012-03-31	126
2012-06-30	90
2012-09-30	56
2012-12-31	56
2013-03-31	69
2013-06-30	107
2013-09-30	42
2013-12-31	58
2014-03-31	67
2014-06-30	71
2014-09-30	69
2014-12-31	31
2015-03-31	22
2015-06-30	11
2015-09-30	10
2015-12-31	4
2016-03-31	12
2016-06-30	6
2016-09-30	7
2016-12-31	1
2017-03-31	8
2017-06-30	2
2017-09-30	2
2017-12-31	1
2018-03-31	3
2018-06-30	6
2018-09-30	2
2018-12-31	3
2019-03-31	636
2019-06-30	1035
2019-09-30	1316
2019-12-31	1183
2020-03-31	1330
2020-06-30	1275
2020-09-30	1451
2020-12-31	791
2021-03-31	0
2021-06-30	0
2021-09-30	0
2021-12-31	1
2022-03-31	6
2022-06-30	0
2022-09-30	1
2022-12-31	4
2023-03-31	20
2023-06-30	23
2023-09-30	24