Quarter	US dollars
2004-12-31	75
2005-03-31	64
2005-06-30	47
2005-09-30	57
2005-12-31	53
2006-03-31	123
2006-06-30	44
2006-09-30	60
2006-12-31	39
2007-03-31	29
2007-06-30	104
2007-09-30	84
2007-12-31	106
2008-03-31	143
2008-06-30	191
2008-09-30	242
2008-12-31	249
2009-03-31	224
2009-06-30	272
2009-09-30	206
2009-12-31	237
2010-03-31	258
2010-06-30	293
2010-09-30	304
2010-12-31	277
2011-03-31	317
2011-06-30	217
2011-09-30	282
2011-12-31	360
2012-03-31	403
2012-06-30	430
2012-09-30	305
2012-12-31	233
2013-03-31	276
2013-06-30	275
2013-09-30	246
2013-12-31	392
2014-03-31	624
2014-06-30	665
2014-09-30	501
2014-12-31	524
2015-03-31	520
2015-06-30	319
2015-09-30	312
2015-12-31	330
2016-03-31	249
2016-06-30	316
2016-09-30	201
2016-12-31	515
2017-03-31	245
2017-06-30	407
2017-09-30	255
2017-12-31	177
2018-03-31	180
2018-06-30	203
2018-09-30	368
2018-12-31	503
2019-03-31	480
2019-06-30	154
2019-09-30	434
2019-12-31	490
2020-03-31	206
2020-06-30	154
2020-09-30	405
2020-12-31	352
2021-03-31	76
2021-06-30	86
2021-09-30	124
2021-12-31	112
2022-03-31	201
2022-06-30	267
2022-09-30	234
2022-12-31	206
2023-03-31	156
2023-06-30	263
2023-09-30	157