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	390
2017-09-30	421
2017-12-31	347
2018-03-31	334
2018-06-30	330
2018-09-30	248
2018-12-31	315
2019-03-31	224
2019-06-30	221
2019-09-30	202
2019-12-31	229
2020-03-31	172
2020-06-30	190
2020-09-30	238
2020-12-31	225
2021-03-31	232
2021-06-30	243
2021-09-30	356
2021-12-31	388
2022-03-31	365
2022-06-30	365
2022-09-30	380
2022-12-31	326
2023-03-31	271
2023-06-30	274
2023-09-30	273