Quarter	US dollars
2004-12-31	-8791
2005-03-31	-8320
2005-06-30	-8894
2005-09-30	-8481
2005-12-31	-10734
2006-03-31	-2057
2006-06-30	-988
2006-09-30	-2431
2006-12-31	-2665
2007-03-31	-4093
2007-06-30	-4711
2007-09-30	-6179
2007-12-31	-6773
2008-03-31	-7139
2008-06-30	-7658
2008-09-30	-3482
2008-12-31	-6274
2009-03-31	-6440
2009-06-30	-6739
2009-09-30	-4595
2009-12-31	-4849
2010-03-31	-4993
2010-06-30	-10581
2010-09-30	-8194
2010-12-31	-5961
2011-03-31	-4504
2011-06-30	-6019
2011-09-30	-4549
2011-12-31	-2839
2012-03-31	-2691
2012-06-30	-2493
2012-09-30	-1683
2012-12-31	-213
2013-03-31	-421
2013-06-30	255
2013-09-30	45
2013-12-31	-307
2014-03-31	-687
2014-06-30	-21
2014-09-30	-242
2014-12-31	41
2015-03-31	117
2015-06-30	-423
2015-09-30	-698
2015-12-31	-1528
2016-03-31	-1817
2016-06-30	-2107
2016-09-30	-1454
2016-12-31	-1596
2017-03-31	-1561
2017-06-30	-929
2017-09-30	-180
2017-12-31	-123
2018-03-31	881
2018-06-30	1217
2018-09-30	473
2018-12-31	928
2019-03-31	925
2019-06-30	2443
2019-09-30	2600
2019-12-31	275
2020-03-31	-105
2020-06-30	143
2020-09-30	-728
2020-12-31	-924
2021-03-31	-857
2021-06-30	-940
2021-09-30	-681
2021-12-31	-821
2022-03-31	-906
2022-06-30	-1506
2022-09-30	-1316
2022-12-31	-1099
2023-03-31	-1565
2023-06-30	-1512
2023-09-30	-1635