Quarter	US dollars
2004-12-31	8
2005-03-31	2
2005-06-30	27
2005-09-30	62
2005-12-31	72
2006-03-31	101
2006-06-30	124
2006-09-30	163
2006-12-31	215
2007-03-31	255
2007-06-30	255
2007-09-30	399
2007-12-31	410
2008-03-31	413
2008-06-30	418
2008-09-30	446
2008-12-31	404
2009-03-31	351
2009-06-30	374
2009-09-30	352
2009-12-31	328
2010-03-31	293
2010-06-30	410
2010-09-30	449
2010-12-31	490
2011-03-31	491
2011-06-30	504
2011-09-30	486
2011-12-31	467
2012-03-31	521
2012-06-30	378
2012-09-30	216
2012-12-31	230
2013-03-31	241
2013-06-30	221
2013-09-30	185
2013-12-31	137
2014-03-31	148
2014-06-30	150
2014-09-30	92
2014-12-31	76
2015-03-31	77
2015-06-30	105
2015-09-30	161
2015-12-31	148
2016-03-31	157
2016-06-30	162
2016-09-30	135
2016-12-31	116
2017-03-31	120
2017-06-30	129
2017-09-30	136
2017-12-31	186
2018-03-31	126
2018-06-30	123
2018-09-30	123
2018-12-31	105
2019-03-31	112
2019-06-30	129
2019-09-30	120
2019-12-31	115
2020-03-31	123
2020-06-30	172
2020-09-30	178
2020-12-31	177
2021-03-31	195
2021-06-30	116
2021-09-30	108
2021-12-31	88
2022-03-31	84
2022-06-30	72
2022-09-30	65
2022-12-31	65
2023-03-31	56
2023-06-30	73
2023-09-30	74