Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	172
2005-12-31	144
2006-03-31	205
2006-06-30	176
2006-09-30	200
2006-12-31	194
2007-03-31	198
2007-06-30	205
2007-09-30	210
2007-12-31	239
2008-03-31	237
2008-06-30	271
2008-09-30	282
2008-12-31	257
2009-03-31	235
2009-06-30	268
2009-09-30	286
2009-12-31	275
2010-03-31	218
2010-06-30	250
2010-09-30	282
2010-12-31	316
2011-03-31	333
2011-06-30	360
2011-09-30	393
2011-12-31	402
2012-03-31	350
2012-06-30	329
2012-09-30	367
2012-12-31	458
2013-03-31	474
2013-06-30	438
2013-09-30	481
2013-12-31	471
2014-03-31	467
2014-06-30	390
2014-09-30	457
2014-12-31	584
2015-03-31	532
2015-06-30	495
2015-09-30	577
2015-12-31	511
2016-03-31	496
2016-06-30	0
2016-09-30	0
2016-12-31	0
2017-03-31	0
2017-06-30	0
2017-09-30	0
2017-12-31	0
2018-03-31	0
2018-06-30	0
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	0
2020-12-31	0
2021-03-31	1
2021-06-30	1
2021-09-30	1
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