Quarter	US dollars
2004-12-31	908
2005-03-31	1085
2005-06-30	1059
2005-09-30	1174
2005-12-31	946
2006-03-31	1077
2006-06-30	988
2006-09-30	542
2006-12-31	851
2007-03-31	333
2007-06-30	700
2007-09-30	611
2007-12-31	641
2008-03-31	797
2008-06-30	1015
2008-09-30	367
2008-12-31	562
2009-03-31	451
2009-06-30	604
2009-09-30	275
2009-12-31	191
2010-03-31	673
2010-06-30	524
2010-09-30	451
2010-12-31	467
2011-03-31	418
2011-06-30	424
2011-09-30	142
2011-12-31	31
2012-03-31	136
2012-06-30	193
2012-09-30	136
2012-12-31	346
2013-03-31	411
2013-06-30	414
2013-09-30	528
2013-12-31	445
2014-03-31	594
2014-06-30	580
2014-09-30	660
2014-12-31	428
2015-03-31	399
2015-06-30	304
2015-09-30	347
2015-12-31	310
2016-03-31	280
2016-06-30	216
2016-09-30	235
2016-12-31	388
2017-03-31	229
2017-06-30	81
2017-09-30	123
2017-12-31	135
2018-03-31	354
2018-06-30	218
2018-09-30	146
2018-12-31	-119
2019-03-31	-100
2019-06-30	126
2019-09-30	195
2019-12-31	207
2020-03-31	256
2020-06-30	1295
2020-09-30	1997
2020-12-31	1396
2021-03-31	1567
2021-06-30	1510
2021-09-30	1346
2021-12-31	938
2022-03-31	892
2022-06-30	1405
2022-09-30	1356
2022-12-31	857
2023-03-31	738
2023-06-30	963
2023-09-30	757