Quarter	US dollars
1999-03-31	177
1999-06-30	149
1999-09-30	127
1999-12-31	102
2000-03-31	100
2000-06-30	114
2000-09-30	110
2000-12-31	158
2001-03-31	146
2001-06-30	100
2001-09-30	81
2001-12-31	88
2002-03-31	78
2002-06-30	71
2002-09-30	74
2002-12-31	77
2003-03-31	77
2003-06-30	76
2003-09-30	79
2003-12-31	80
2004-03-31	73
2004-06-30	73
2004-09-30	54
2004-12-31	55
2005-03-31	58
2005-06-30	54
2005-09-30	59
2005-12-31	121
2006-03-31	56
2006-06-30	53
2006-09-30	51
2006-12-31	54
2007-03-31	52
2007-06-30	52
2007-09-30	52
2007-12-31	50
2008-03-31	50
2008-06-30	50
2008-09-30	1876
2008-12-31	1906
2009-03-31	1884
2009-06-30	1866
2009-09-30	1893
2009-12-31	2195
2010-03-31	2215
2010-06-30	773
2010-09-30	553
2010-12-31	429
2011-03-31	394
2011-06-30	384
2011-09-30	134
2011-12-31	237
2012-03-31	184
2012-06-30	141
2012-09-30	68
2012-12-31	39
2013-03-31	27
2013-06-30	65
2013-09-30	40
2013-12-31	0
2014-03-31	1
2014-06-30	31
2014-09-30	128
2014-12-31	34
2015-03-31	31
2015-06-30	23
2015-09-30	23
2015-12-31	9
2016-03-31	7
2016-06-30	0
2016-09-30	0
2016-12-31	1969
2017-03-31	1963
2017-06-30	1981
2017-09-30	1979
2017-12-31	1957
2018-03-31	1929
2018-06-30	1928
2018-09-30	1921
2018-12-31	1946
2019-03-31	1968
2019-06-30	1997
2019-09-30	2001
2019-12-31	2000
2020-03-31	2073
2020-06-30	2084
2020-09-30	2081
2020-12-31	2061
2021-03-31	2055
2021-06-30	2045
2021-09-30	2040
2021-12-31	0
2022-03-31	0
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	1