Quarter	US dollars
2004-12-31	-1219
2005-03-31	-1478
2005-06-30	-1511
2005-09-30	-1127
2005-12-31	-1250
2006-03-31	-1290
2006-06-30	-1158
2006-09-30	-1166
2006-12-31	-1311
2007-03-31	-1267
2007-06-30	-1402
2007-09-30	-1665
2007-12-31	-384
2008-03-31	-1246
2008-06-30	-1558
2008-09-30	-1125
2008-12-31	-467
2009-03-31	-1222
2009-06-30	-906
2009-09-30	-1419
2009-12-31	-1439
2010-03-31	-1039
2010-06-30	-2258
2010-09-30	-2896
2010-12-31	-1946
2011-03-31	-508
2011-06-30	812
2011-09-30	604
2011-12-31	543
2012-03-31	-820
2012-06-30	-480
2012-09-30	139
2012-12-31	632
2013-03-31	1517
2013-06-30	3074
2013-09-30	2998
2013-12-31	1202
2014-03-31	642
2014-06-30	1735
2014-09-30	1341
2014-12-31	577
2015-03-31	735
2015-06-30	-349
2015-09-30	-900
2015-12-31	-891
2016-03-31	-706
2016-06-30	-560
2016-09-30	-1147
2016-12-31	-1096
2017-03-31	-894
2017-06-30	-2506
2017-09-30	-1990
2017-12-31	-2425
2018-03-31	-2466
2018-06-30	-2767
2018-09-30	-2547
2018-12-31	-2436
2019-03-31	-1951
2019-06-30	-1139
2019-09-30	-1542
2019-12-31	-1466
2020-03-31	-1292
2020-06-30	-814
2020-09-30	-1442
2020-12-31	-1290
2021-03-31	-1000
2021-06-30	-1329
2021-09-30	-471
2021-12-31	-233
2022-03-31	-563
2022-06-30	-806
2022-09-30	-652
2022-12-31	-475
2023-03-31	-587
2023-06-30	-302
2023-09-30	-524