Quarter	US dollars
2004-12-31	36
2005-03-31	25
2005-06-30	25
2005-09-30	32
2005-12-31	31
2006-03-31	29
2006-06-30	22
2006-09-30	11
2006-12-31	10
2007-03-31	10
2007-06-30	14
2007-09-30	14
2007-12-31	12
2008-03-31	12
2008-06-30	16
2008-09-30	12
2008-12-31	12
2009-03-31	14
2009-06-30	35
2009-09-30	61
2009-12-31	74
2010-03-31	93
2010-06-30	55
2010-09-30	60
2010-12-31	177
2011-03-31	170
2011-06-30	170
2011-09-30	203
2011-12-31	198
2012-03-31	201
2012-06-30	196
2012-09-30	215
2012-12-31	176
2013-03-31	137
2013-06-30	215
2013-09-30	280
2013-12-31	413
2014-03-31	403
2014-06-30	427
2014-09-30	374
2014-12-31	220
2015-03-31	255
2015-06-30	123
2015-09-30	179
2015-12-31	271
2016-03-31	204
2016-06-30	303
2016-09-30	392
2016-12-31	285
2017-03-31	343
2017-06-30	305
2017-09-30	126
2017-12-31	99
2018-03-31	84
2018-06-30	84
2018-09-30	235
2018-12-31	292
2019-03-31	361
2019-06-30	369
2019-09-30	333
2019-12-31	454
2020-03-31	518
2020-06-30	533
2020-09-30	389
2020-12-31	237
2021-03-31	109
2021-06-30	488
2021-09-30	728
2021-12-31	784
2022-03-31	533
2022-06-30	497
2022-09-30	318
2022-12-31	213
2023-03-31	305
2023-06-30	388
2023-09-30	353