Quarter	US dollars
2004-12-31	388
2005-03-31	645
2005-06-30	769
2005-09-30	589
2005-12-31	633
2006-03-31	187
2006-06-30	181
2006-09-30	359
2006-12-31	-55
2007-03-31	845
2007-06-30	1936
2007-09-30	3510
2007-12-31	5240
2008-03-31	5557
2008-06-30	5089
2008-09-30	2654
2008-12-31	907
2009-03-31	-953
2009-06-30	613
2009-09-30	1331
2009-12-31	247
2010-03-31	-508
2010-06-30	-579
2010-09-30	-885
2010-12-31	-978
2011-03-31	-585
2011-06-30	-1416
2011-09-30	-1471
2011-12-31	-97
2012-03-31	-1123
2012-06-30	-1258
2012-09-30	-3727
2012-12-31	-1738
2013-03-31	-1637
2013-06-30	-1371
2013-09-30	-1226
2013-12-31	-1511
2014-03-31	-1641
2014-06-30	-1033
2014-09-30	-700
2014-12-31	-1194
2015-03-31	-1216
2015-06-30	-1247
2015-09-30	-713
2015-12-31	-940
2016-03-31	-775
2016-06-30	-352
2016-09-30	-372
2016-12-31	-50
2017-03-31	-165
2017-06-30	1643
2017-09-30	1949
2017-12-31	1585
2018-03-31	1673
2018-06-30	1598
2018-09-30	1780
2018-12-31	1708
2019-03-31	1766
2019-06-30	1461
2019-09-30	1285
2019-12-31	1371
2020-03-31	2043
2020-06-30	2299
2020-09-30	3236
2020-12-31	2485
2021-03-31	1828
2021-06-30	1339
2021-09-30	1342
2021-12-31	1720
2022-03-31	1820
2022-06-30	1353
2022-09-30	1495
2022-12-31	1392
2023-03-31	1741
2023-06-30	1641
2023-09-30	1716