Quarter	US dollars
2004-12-31	482
2005-03-31	361
2005-06-30	176
2005-09-30	375
2005-12-31	373
2006-03-31	479
2006-06-30	681
2006-09-30	716
2006-12-31	935
2007-03-31	1477
2007-06-30	1435
2007-09-30	1251
2007-12-31	1127
2008-03-31	1250
2008-06-30	1457
2008-09-30	1517
2008-12-31	1436
2009-03-31	1353
2009-06-30	1207
2009-09-30	1164
2009-12-31	1079
2010-03-31	1785
2010-06-30	2560
2010-09-30	2853
2010-12-31	3447
2011-03-31	3777
2011-06-30	3513
2011-09-30	2301
2011-12-31	2035
2012-03-31	2801
2012-06-30	2754
2012-09-30	1570
2012-12-31	1450
2013-03-31	1586
2013-06-30	1629
2013-09-30	1810
2013-12-31	1778
2014-03-31	1916
2014-06-30	1793
2014-09-30	2030
2014-12-31	1111
2015-03-31	693
2015-06-30	508
2015-09-30	432
2015-12-31	416
2016-03-31	408
2016-06-30	322
2016-09-30	249
2016-12-31	239
2017-03-31	234
2017-06-30	238
2017-09-30	276
2017-12-31	215
2018-03-31	177
2018-06-30	177
2018-09-30	117
2018-12-31	149
2019-03-31	145
2019-06-30	244
2019-09-30	198
2019-12-31	218
2020-03-31	171
2020-06-30	124
2020-09-30	158
2020-12-31	131
2021-03-31	149
2021-06-30	294
2021-09-30	262
2021-12-31	228
2022-03-31	241
2022-06-30	119
2022-09-30	169
2022-12-31	113
2023-03-31	74
2023-06-30	86
2023-09-30	133