Quarter	US dollars
1999-09-30	175
1999-12-31	64
2000-03-31	142
2000-06-30	20
2000-09-30	9
2000-12-31	16
2001-03-31	74
2001-06-30	7
2001-09-30	13
2001-12-31	12
2002-03-31	73
2002-06-30	16
2002-09-30	4
2002-12-31	4
2003-03-31	4
2003-06-30	7
2003-09-30	3
2003-12-31	1
2004-03-31	1
2004-06-30	1
2004-09-30	4
2004-12-31	2
2005-03-31	7
2005-06-30	7
2005-09-30	2
2005-12-31	9
2006-03-31	2
2006-06-30	10
2006-09-30	10
2006-12-31	3
2007-03-31	2
2007-06-30	2
2007-09-30	2
2007-12-31	13
2008-03-31	3
2008-06-30	4
2008-09-30	4
2008-12-31	4
2009-03-31	1
2009-06-30	2
2009-09-30	2
2009-12-31	1
2010-03-31	2
2010-06-30	2
2010-09-30	4
2010-12-31	3
2011-03-31	2
2011-06-30	1
2011-09-30	1
2011-12-31	1
2012-03-31	2
2012-06-30	2
2012-09-30	2
2012-12-31	5
2013-03-31	0
2013-06-30	0
2013-09-30	-1
2013-12-31	170
2014-03-31	513
2014-06-30	1226
2014-09-30	1683
2014-12-31	2114
2015-03-31	2219
2015-06-30	2100
2015-09-30	2124
2015-12-31	1794
2016-03-31	2067
2016-06-30	2634
2016-09-30	1854
2016-12-31	2455
2017-03-31	2255
2017-06-30	3303
2017-09-30	4920
2017-12-31	5144
2018-03-31	5844
2018-06-30	5948
2018-09-30	5817
2018-12-31	4989
2019-03-31	5155
2019-06-30	4786
2019-09-30	4681
2019-12-31	4449
2020-03-31	3982
2020-06-30	4055
2020-09-30	5311
2020-12-31	4687
2021-03-31	6923
2021-06-30	7473
2021-09-30	4035
2021-12-31	6319
2022-03-31	3360
2022-06-30	2358
2022-09-30	2817
2022-12-31	3593
2023-03-31	4451
2023-06-30	3368
2023-09-30	3139
2023-12-31	4177