Quarter	US dollars
2004-12-31	-1309
2005-03-31	-1325
2005-06-30	-1778
2005-09-30	-1403
2005-12-31	-1193
2006-03-31	-1721
2006-06-30	-1979
2006-09-30	-1317
2006-12-31	-1994
2007-03-31	-1969
2007-06-30	-1936
2007-09-30	-2433
2007-12-31	-3152
2008-03-31	-1799
2008-06-30	-1765
2008-09-30	-1370
2008-12-31	-1265
2009-03-31	-682
2009-06-30	-799
2009-09-30	-1711
2009-12-31	-1654
2010-03-31	-1582
2010-06-30	-2433
2010-09-30	-833
2010-12-31	-1420
2011-03-31	-2398
2011-06-30	-1100
2011-09-30	-1221
2011-12-31	-1110
2012-03-31	-921
2012-06-30	-2408
2012-09-30	-2821
2012-12-31	-1863
2013-03-31	-1231
2013-06-30	-1720
2013-09-30	-2053
2013-12-31	-1535
2014-03-31	-1847
2014-06-30	-1286
2014-09-30	-603
2014-12-31	-304
2015-03-31	-281
2015-06-30	38
2015-09-30	-79
2015-12-31	342
2016-03-31	167
2016-06-30	-32
2016-09-30	417
2016-12-31	497
2017-03-31	495
2017-06-30	261
2017-09-30	283
2017-12-31	567
2018-03-31	199
2018-06-30	438
2018-09-30	-203
2018-12-31	-61
2019-03-31	190
2019-06-30	295
2019-09-30	562
2019-12-31	758
2020-03-31	985
2020-06-30	1011
2020-09-30	1030
2020-12-31	1093
2021-03-31	1149
2021-06-30	1093
2021-09-30	1201
2021-12-31	927
2022-03-31	708
2022-06-30	562
2022-09-30	696
2022-12-31	534
2023-03-31	536
2023-06-30	591
2023-09-30	856