Quarter	US dollars
1999-09-30	66
1999-12-31	74
2000-03-31	94
2000-06-30	88
2000-09-30	87
2000-12-31	90
2001-03-31	92
2001-06-30	105
2001-09-30	103
2001-12-31	63
2002-03-31	94
2002-06-30	87
2002-09-30	118
2002-12-31	109
2003-03-31	103
2003-06-30	104
2003-09-30	86
2003-12-31	72
2004-03-31	74
2004-06-30	71
2004-09-30	67
2004-12-31	27
2005-03-31	26
2005-06-30	20
2005-09-30	19
2005-12-31	19
2006-03-31	7
2006-06-30	18
2006-09-30	39
2006-12-31	932
2007-03-31	922
2007-06-30	955
2007-09-30	984
2007-12-31	1011
2008-03-31	1063
2008-06-30	1083
2008-09-30	1080
2008-12-31	1062
2009-03-31	1092
2009-06-30	1072
2009-09-30	918
2009-12-31	887
2010-03-31	910
2010-06-30	902
2010-09-30	889
2010-12-31	957
2011-03-31	994
2011-06-30	1074
2011-09-30	1045
2011-12-31	971
2012-03-31	1058
2012-06-30	1005
2012-09-30	937
2012-12-31	370
2013-03-31	301
2013-06-30	185
2013-09-30	230
2013-12-31	207
2014-03-31	227
2014-06-30	231
2014-09-30	204
2014-12-31	192
2015-03-31	165
2015-06-30	171
2015-09-30	192
2015-12-31	200
2016-03-31	184
2016-06-30	179
2016-09-30	155
2016-12-31	96
2017-03-31	44
2017-06-30	34
2017-09-30	46
2017-12-31	51
2018-03-31	20
2018-06-30	16
2018-09-30	21
2018-12-31	22
2019-03-31	33
2019-06-30	51
2019-09-30	134
2019-12-31	148
2020-03-31	134
2020-06-30	116
2020-09-30	8
2020-12-31	66
2021-03-31	44
2021-06-30	48
2021-09-30	12
2021-12-31	7
2022-03-31	4
2022-06-30	-3
2022-09-30	5
2022-12-31	9
2023-03-31	23
2023-06-30	16
2023-09-30	3