Quarter	US dollars
2004-12-31	8
2005-03-31	2
2005-06-30	29
2005-09-30	62
2005-12-31	93
2006-03-31	102
2006-06-30	124
2006-09-30	151
2006-12-31	204
2007-03-31	241
2007-06-30	255
2007-09-30	399
2007-12-31	416
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	329
2010-03-31	294
2010-06-30	386
2010-09-30	421
2010-12-31	382
2011-03-31	406
2011-06-30	469
2011-09-30	430
2011-12-31	453
2012-03-31	433
2012-06-30	309
2012-09-30	216
2012-12-31	225
2013-03-31	393
2013-06-30	338
2013-09-30	257
2013-12-31	205
2014-03-31	210
2014-06-30	169
2014-09-30	102
2014-12-31	66
2015-03-31	64
2015-06-30	96
2015-09-30	158
2015-12-31	148
2016-03-31	155
2016-06-30	167
2016-09-30	135
2016-12-31	117
2017-03-31	119
2017-06-30	123
2017-09-30	130
2017-12-31	186
2018-03-31	121
2018-06-30	120
2018-09-30	120
2018-12-31	109
2019-03-31	109
2019-06-30	129
2019-09-30	118
2019-12-31	114
2020-03-31	122
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