Quarter	US dollars
2004-12-31	23
2005-03-31	15
2005-06-30	30
2005-09-30	30
2005-12-31	36
2006-03-31	42
2006-06-30	18
2006-09-30	30
2006-12-31	23
2007-03-31	31
2007-06-30	32
2007-09-30	29
2007-12-31	44
2008-03-31	74
2008-06-30	66
2008-09-30	70
2008-12-31	56
2009-03-31	77
2009-06-30	64
2009-09-30	162
2009-12-31	153
2010-03-31	144
2010-06-30	145
2010-09-30	161
2010-12-31	144
2011-03-31	143
2011-06-30	140
2011-09-30	153
2011-12-31	135
2012-03-31	126
2012-06-30	121
2012-09-30	145
2012-12-31	170
2013-03-31	155
2013-06-30	155
2013-09-30	121
2013-12-31	109
2014-03-31	127
2014-06-30	127
2014-09-30	97
2014-12-31	70
2015-03-31	22
2015-06-30	27
2015-09-30	24
2015-12-31	12
2016-03-31	3
2016-06-30	7
2016-09-30	3
2016-12-31	4
2017-03-31	6
2017-06-30	3
2017-09-30	3
2017-12-31	3
2018-03-31	4
2018-06-30	3
2018-09-30	3
2018-12-31	4
2019-03-31	1
2019-06-30	4
2019-09-30	2
2019-12-31	0
2020-03-31	1
2020-06-30	0
2020-09-30	0
2020-12-31	3
2021-03-31	3
2021-06-30	3
2021-09-30	3
2021-12-31	1
2022-03-31	0
2022-06-30	1
2022-09-30	1
2022-12-31	0
2023-03-31	0
2023-06-30	1
2023-09-30	1