Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	4
2005-12-31	3
2006-03-31	2
2006-06-30	2
2006-09-30	2
2006-12-31	1049
2007-03-31	1090
2007-06-30	1126
2007-09-30	1169
2007-12-31	1302
2008-03-31	1353
2008-06-30	1431
2008-09-30	1417
2008-12-31	1311
2009-03-31	1306
2009-06-30	1293
2009-09-30	1196
2009-12-31	1205
2010-03-31	1201
2010-06-30	1198
2010-09-30	1177
2010-12-31	1270
2011-03-31	1284
2011-06-30	1276
2011-09-30	1320
2011-12-31	1262
2012-03-31	1301
2012-06-30	1258
2012-09-30	1205
2012-12-31	47
2013-03-31	254
2013-06-30	215
2013-09-30	225
2013-12-31	3
2014-03-31	177
2014-06-30	180
2014-09-30	182
2014-12-31	183
2015-03-31	190
2015-06-30	176
2015-09-30	186
2015-12-31	193
2016-03-31	4
2016-06-30	0
2016-09-30	0
2016-12-31	0
2017-03-31	5
2017-06-30	0
2017-09-30	15
2017-12-31	0
2018-03-31	0
2018-06-30	4
2018-09-30	0
2018-12-31	0
2019-03-31	0
2019-06-30	0
2019-09-30	0
2019-12-31	0
2020-03-31	0
2020-06-30	0
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	1
2022-12-31	0
2023-03-31	1
2023-06-30	1
2023-09-30	1