Quarter	US dollars
1999-03-31	223
1999-06-30	185
1999-09-30	84
1999-12-31	86
2000-03-31	94
2000-06-30	83
2000-09-30	94
2000-12-31	74
2001-03-31	139
2001-06-30	195
2001-09-30	364
2001-12-31	312
2002-03-31	502
2002-06-30	730
2002-09-30	224
2002-12-31	402
2003-03-31	515
2003-06-30	380
2003-09-30	440
2003-12-31	648
2004-03-31	678
2004-06-30	703
2004-09-30	781
2004-12-31	763
2005-03-31	889
2005-06-30	119
2005-09-30	4
2005-12-31	4
2006-03-31	4
2006-06-30	5
2006-09-30	6
2006-12-31	4
2007-03-31	2
2007-06-30	0
2007-09-30	31
2007-12-31	41
2008-03-31	99
2008-06-30	92
2008-09-30	98
2008-12-31	71
2009-03-31	27
2009-06-30	81
2009-09-30	34
2009-12-31	26
2010-03-31	9
2010-06-30	9
2010-09-30	9
2010-12-31	1
2011-03-31	0
2011-06-30	0
2011-09-30	1
2011-12-31	70
2012-03-31	20
2012-06-30	36
2012-09-30	37
2012-12-31	42
2013-03-31	50
2013-06-30	15
2013-09-30	1
2013-12-31	41
2014-03-31	34
2014-06-30	41
2014-09-30	30
2014-12-31	109
2015-03-31	22
2015-06-30	58
2015-09-30	43
2015-12-31	12
2016-03-31	22
2016-06-30	41
2016-09-30	58
2016-12-31	86
2017-03-31	88
2017-06-30	207
2017-09-30	53
2017-12-31	460
2018-03-31	45
2018-06-30	703
2018-09-30	781
2018-12-31	234
2019-03-31	195
2019-06-30	202
2019-09-30	856
2019-12-31	893
2020-03-31	572
2020-06-30	1278
2020-09-30	915
2020-12-31	924
2021-03-31	821
2021-06-30	1156
2021-09-30	987
2021-12-31	1041
2022-03-31	1191
2022-06-30	1007
2022-09-30	1048
2022-12-31	637
2023-03-31	859
2023-06-30	879
2023-09-30	802