Quarter	US dollars
2004-12-31	17
2005-03-31	19
2005-06-30	43
2005-09-30	44
2005-12-31	22
2006-03-31	24
2006-06-30	11
2006-09-30	71
2006-12-31	65
2007-03-31	67
2007-06-30	154
2007-09-30	238
2007-12-31	133
2008-03-31	368
2008-06-30	299
2008-09-30	226
2008-12-31	214
2009-03-31	148
2009-06-30	132
2009-09-30	130
2009-12-31	126
2010-03-31	123
2010-06-30	22
2010-09-30	19
2010-12-31	13
2011-03-31	11
2011-06-30	10
2011-09-30	17
2011-12-31	54
2012-03-31	59
2012-06-30	82
2012-09-30	110
2012-12-31	95
2013-03-31	82
2013-06-30	64
2013-09-30	70
2013-12-31	73
2014-03-31	63
2014-06-30	132
2014-09-30	233
2014-12-31	258
2015-03-31	157
2015-06-30	165
2015-09-30	153
2015-12-31	147
2016-03-31	237
2016-06-30	184
2016-09-30	196
2016-12-31	193
2017-03-31	183
2017-06-30	1
2017-09-30	7
2017-12-31	1
2018-03-31	1
2018-06-30	1
2018-09-30	1
2018-12-31	1
2019-03-31	12
2019-06-30	1
2019-09-30	1
2019-12-31	1
2020-03-31	1
2020-06-30	1
2020-09-30	1
2020-12-31	1
2021-03-31	1
2021-06-30	1
2021-09-30	1
2021-12-31	1
2022-03-31	1
2022-06-30	1
2022-09-30	2
2022-12-31	1
2023-03-31	1
2023-06-30	1
2023-09-30	1