Quarter	US dollars
2004-12-31	-1156
2005-03-31	-892
2005-06-30	-1119
2005-09-30	-886
2005-12-31	-635
2006-03-31	-931
2006-06-30	-991
2006-09-30	-816
2006-12-31	-967
2007-03-31	-951
2007-06-30	-1689
2007-09-30	-1958
2007-12-31	-2266
2008-03-31	-3892
2008-06-30	-3875
2008-09-30	-5086
2008-12-31	-5392
2009-03-31	-6227
2009-06-30	-3218
2009-09-30	-3234
2009-12-31	-3932
2010-03-31	-3886
2010-06-30	-5068
2010-09-30	-4085
2010-12-31	-3702
2011-03-31	-3185
2011-06-30	-3084
2011-09-30	-4716
2011-12-31	-4270
2012-03-31	-2966
2012-06-30	-3216
2012-09-30	-3529
2012-12-31	-2779
2013-03-31	-2675
2013-06-30	-1979
2013-09-30	-1479
2013-12-31	-1382
2014-03-31	-1344
2014-06-30	-1193
2014-09-30	-1224
2014-12-31	-1505
2015-03-31	-1090
2015-06-30	-897
2015-09-30	-1439
2015-12-31	-888
2016-03-31	-1017
2016-06-30	-1620
2016-09-30	-1546
2016-12-31	-2002
2017-03-31	-1084
2017-06-30	-1311
2017-09-30	-1397
2017-12-31	-825
2018-03-31	-857
2018-06-30	-721
2018-09-30	-1068
2018-12-31	-2900
2019-03-31	-2506
2019-06-30	-1098
2019-09-30	-1152
2019-12-31	-1564
2020-03-31	-2450
2020-06-30	-1565
2020-09-30	-1583
2020-12-31	-2247
2021-03-31	-1523
2021-06-30	-1730
2021-09-30	-1576
2021-12-31	-1714
2022-03-31	-2307
2022-06-30	-2349
2022-09-30	-2245
2022-12-31	-1191
2023-03-31	-916
2023-06-30	-2005
2023-09-30	-1939