Quarter	US dollars
1999-03-31	104
1999-06-30	110
1999-09-30	337
1999-12-31	80
2000-03-31	82
2000-06-30	77
2000-09-30	263
2000-12-31	144
2001-03-31	82
2001-06-30	92
2001-09-30	136
2001-12-31	94
2002-03-31	95
2002-06-30	108
2002-09-30	52
2002-12-31	66
2003-03-31	120
2003-06-30	116
2003-09-30	140
2003-12-31	171
2004-03-31	173
2004-06-30	229
2004-09-30	532
2004-12-31	513
2005-03-31	569
2005-06-30	656
2005-09-30	607
2005-12-31	431
2006-03-31	398
2006-06-30	597
2006-09-30	632
2006-12-31	677
2007-03-31	614
2007-06-30	939
2007-09-30	907
2007-12-31	1289
2008-03-31	1253
2008-06-30	1729
2008-09-30	1534
2008-12-31	1307
2009-03-31	1135
2009-06-30	916
2009-09-30	941
2009-12-31	564
2010-03-31	644
2010-06-30	589
2010-09-30	609
2010-12-31	501
2011-03-31	532
2011-06-30	417
2011-09-30	445
2011-12-31	300
2012-03-31	326
2012-06-30	263
2012-09-30	254
2012-12-31	278
2013-03-31	359
2013-06-30	286
2013-09-30	87
2013-12-31	50
2014-03-31	53
2014-06-30	80
2014-09-30	76
2014-12-31	41
2015-03-31	54
2015-06-30	4
2015-09-30	29
2015-12-31	5
2016-03-31	13
2016-06-30	5
2016-09-30	1
2016-12-31	2
2017-03-31	1
2017-06-30	1
2017-09-30	2
2017-12-31	7
2018-03-31	21
2018-06-30	27
2018-09-30	54
2018-12-31	46
2019-03-31	51
2019-06-30	77
2019-09-30	21
2019-12-31	28
2020-03-31	12
2020-06-30	11
2020-09-30	3
2020-12-31	3
2021-03-31	5
2021-06-30	62
2021-09-30	64
2021-12-31	68
2022-03-31	8
2022-06-30	25
2022-09-30	20
2022-12-31	24
2023-03-31	17
2023-06-30	6
2023-09-30	65