Quarter	US dollars
2004-12-31	0
2005-03-31	2
2005-06-30	2
2005-09-30	0
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	0
2006-12-31	0
2007-03-31	0
2007-06-30	2
2007-09-30	2
2007-12-31	2
2008-03-31	10
2008-06-30	14
2008-09-30	2
2008-12-31	0
2009-03-31	4
2009-06-30	0
2009-09-30	0
2009-12-31	0
2010-03-31	0
2010-06-30	0
2010-09-30	0
2010-12-31	5
2011-03-31	5
2011-06-30	5
2011-09-30	227
2011-12-31	226
2012-03-31	502
2012-06-30	471
2012-09-30	475
2012-12-31	534
2013-03-31	516
2013-06-30	423
2013-09-30	394
2013-12-31	364
2014-03-31	348
2014-06-30	316
2014-09-30	300
2014-12-31	275
2015-03-31	246
2015-06-30	230
2015-09-30	230
2015-12-31	227
2016-03-31	227
2016-06-30	212
2016-09-30	209
2016-12-31	215
2017-03-31	208
2017-06-30	118
2017-09-30	72
2017-12-31	72
2018-03-31	35
2018-06-30	15
2018-09-30	333
2018-12-31	5
2019-03-31	5
2019-06-30	0
2019-09-30	0
2019-12-31	0
2020-03-31	0
2020-06-30	0
2020-09-30	0
2020-12-31	0
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