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	0
2007-03-31	0
2007-06-30	0
2007-09-30	0
2007-12-31	0
2008-03-31	171
2008-06-30	243
2008-09-30	267
2008-12-31	263
2009-03-31	228
2009-06-30	183
2009-09-30	190
2009-12-31	158
2010-03-31	249
2010-06-30	0
2010-09-30	347
2010-12-31	106
2011-03-31	111
2011-06-30	430
2011-09-30	466
2011-12-31	451
2012-03-31	438
2012-06-30	453
2012-09-30	397
2012-12-31	401
2013-03-31	414
2013-06-30	317
2013-09-30	421
2013-12-31	390
2014-03-31	132
2014-06-30	185
2014-09-30	191
2014-12-31	187
2015-03-31	187
2015-06-30	376
2015-09-30	300
2015-12-31	228
2016-03-31	231
2016-06-30	301
2016-09-30	357
2016-12-31	373
2017-03-31	454
2017-06-30	413
2017-09-30	476
2017-12-31	428
2018-03-31	415
2018-06-30	445
2018-09-30	360
2018-12-31	420
2019-03-31	321
2019-06-30	314
2019-09-30	287
2019-12-31	316
2020-03-31	246
2020-06-30	263
2020-09-30	302
2020-12-31	291
2021-03-31	295
2021-06-30	307
2021-09-30	406
2021-12-31	439
2022-03-31	408
2022-06-30	409
2022-09-30	410
2022-12-31	355
2023-03-31	300
2023-06-30	302
2023-09-30	300