Quarter	US dollars
2004-12-31	-568
2005-03-31	-1113
2005-06-30	-966
2005-09-30	-1610
2005-12-31	-1587
2006-03-31	-1585
2006-06-30	-1348
2006-09-30	-917
2006-12-31	-789
2007-03-31	-581
2007-06-30	-528
2007-09-30	-16
2007-12-31	-633
2008-03-31	-145
2008-06-30	-74
2008-09-30	233
2008-12-31	-252
2009-03-31	-195
2009-06-30	-91
2009-09-30	-11
2009-12-31	-234
2010-03-31	-302
2010-06-30	-250
2010-09-30	-755
2010-12-31	279
2011-03-31	603
2011-06-30	782
2011-09-30	1422
2011-12-31	1371
2012-03-31	1694
2012-06-30	1249
2012-09-30	1600
2012-12-31	1363
2013-03-31	1744
2013-06-30	1758
2013-09-30	1527
2013-12-31	2104
2014-03-31	2613
2014-06-30	2248
2014-09-30	2484
2014-12-31	2694
2015-03-31	2257
2015-06-30	2248
2015-09-30	2043
2015-12-31	1795
2016-03-31	1802
2016-06-30	1817
2016-09-30	1759
2016-12-31	1747
2017-03-31	2788
2017-06-30	1721
2017-09-30	1898
2017-12-31	2363
2018-03-31	2456
2018-06-30	1852
2018-09-30	2166
2018-12-31	3269
2019-03-31	2949
2019-06-30	2435
2019-09-30	2129
2019-12-31	2715
2020-03-31	2049
2020-06-30	1802
2020-09-30	1723
2020-12-31	1213
2021-03-31	1643
2021-06-30	742
2021-09-30	600
2021-12-31	423
2022-03-31	992
2022-06-30	1027
2022-09-30	1212
2022-12-31	1153
2023-03-31	70
2023-06-30	1016
2023-09-30	905