Quarter	US dollars
2004-12-31	25
2005-03-31	25
2005-06-30	23
2005-09-30	53
2005-12-31	173
2006-03-31	173
2006-06-30	172
2006-09-30	179
2006-12-31	160
2007-03-31	120
2007-06-30	120
2007-09-30	73
2007-12-31	68
2008-03-31	76
2008-06-30	76
2008-09-30	89
2008-12-31	91
2009-03-31	52
2009-06-30	46
2009-09-30	48
2009-12-31	42
2010-03-31	41
2010-06-30	43
2010-09-30	41
2010-12-31	34
2011-03-31	69
2011-06-30	47
2011-09-30	69
2011-12-31	56
2012-03-31	27
2012-06-30	66
2012-09-30	79
2012-12-31	61
2013-03-31	55
2013-06-30	70
2013-09-30	115
2013-12-31	223
2014-03-31	330
2014-06-30	238
2014-09-30	370
2014-12-31	354
2015-03-31	325
2015-06-30	371
2015-09-30	304
2015-12-31	310
2016-03-31	319
2016-06-30	415
2016-09-30	431
2016-12-31	439
2017-03-31	358
2017-06-30	138
2017-09-30	152
2017-12-31	147
2018-03-31	189
2018-06-30	181
2018-09-30	173
2018-12-31	179
2019-03-31	195
2019-06-30	135
2019-09-30	122
2019-12-31	157
2020-03-31	169
2020-06-30	114
2020-09-30	154
2020-12-31	160
2021-03-31	185
2021-06-30	178
2021-09-30	174
2021-12-31	166
2022-03-31	167
2022-06-30	124
2022-09-30	145
2022-12-31	157
2023-03-31	137
2023-06-30	97
2023-09-30	87