Quarter	US dollars
2004-12-31	6854
2005-03-31	5951
2005-06-30	7631
2005-09-30	6177
2005-12-31	6369
2006-03-31	6223
2006-06-30	7440
2006-09-30	6886
2006-12-31	8403
2007-03-31	7843
2007-06-30	8160
2007-09-30	10489
2007-12-31	10870
2008-03-31	7294
2008-06-30	8583
2008-09-30	8041
2008-12-31	2967
2009-03-31	4623
2009-06-30	4570
2009-09-30	3965
2009-12-31	3331
2010-03-31	3619
2010-06-30	1887
2010-09-30	1848
2010-12-31	1385
2011-03-31	1702
2011-06-30	2535
2011-09-30	1112
2011-12-31	305
2012-03-31	264
2012-06-30	125
2012-09-30	92
2012-12-31	99
2013-03-31	358
2013-06-30	416
2013-09-30	372
2013-12-31	640
2014-03-31	365
2014-06-30	303
2014-09-30	289
2014-12-31	318
2015-03-31	304
2015-06-30	294
2015-09-30	350
2015-12-31	188
2016-03-31	200
2016-06-30	141
2016-09-30	95
2016-12-31	62
2017-03-31	94
2017-06-30	650
2017-09-30	101
2017-12-31	-107
2018-03-31	365
2018-06-30	3
2018-09-30	110
2018-12-31	-64
2019-03-31	328
2019-06-30	163
2019-09-30	144
2019-12-31	112
2020-03-31	98
2020-06-30	85
2020-09-30	79
2020-12-31	121
2021-03-31	241
2021-06-30	222
2021-09-30	171
2021-12-31	121
2022-03-31	109
2022-06-30	128
2022-09-30	83
2022-12-31	87
2023-03-31	76
2023-06-30	80
2023-09-30	111