Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	0
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	0
2006-12-31	2
2007-03-31	2
2007-06-30	4
2007-09-30	2
2007-12-31	0
2008-03-31	2
2008-06-30	0
2008-09-30	0
2008-12-31	0
2009-03-31	0
2009-06-30	0
2009-09-30	0
2009-12-31	0
2010-03-31	197
2010-06-30	202
2010-09-30	203
2010-12-31	204
2011-03-31	197
2011-06-30	178
2011-09-30	171
2011-12-31	206
2012-03-31	179
2012-06-30	174
2012-09-30	18
2012-12-31	42
2013-03-31	12
2013-06-30	12
2013-09-30	49
2013-12-31	61
2014-03-31	62
2014-06-30	65
2014-09-30	49
2014-12-31	109
2015-03-31	119
2015-06-30	181
2015-09-30	161
2015-12-31	218
2016-03-31	221
2016-06-30	214
2016-09-30	220
2016-12-31	245
2017-03-31	245
2017-06-30	246
2017-09-30	248
2017-12-31	186
2018-03-31	187
2018-06-30	199
2018-09-30	201
2018-12-31	202
2019-03-31	193
2019-06-30	0
2019-09-30	0
2019-12-31	0
2020-03-31	7
2020-06-30	7
2020-09-30	9
2020-12-31	7
2021-03-31	0
2021-06-30	0
2021-09-30	0
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	0