Quarter	US dollars
2004-12-31	-591
2005-03-31	-191
2005-06-30	-229
2005-09-30	-195
2005-12-31	-192
2006-03-31	-186
2006-06-30	-309
2006-09-30	-338
2006-12-31	-395
2007-03-31	-361
2007-06-30	-676
2007-09-30	-501
2007-12-31	-307
2008-03-31	215
2008-06-30	199
2008-09-30	11
2008-12-31	-155
2009-03-31	-218
2009-06-30	-158
2009-09-30	-74
2009-12-31	-132
2010-03-31	-53
2010-06-30	-563
2010-09-30	-421
2010-12-31	80
2011-03-31	-95
2011-06-30	-117
2011-09-30	266
2011-12-31	301
2012-03-31	-519
2012-06-30	-863
2012-09-30	-593
2012-12-31	-506
2013-03-31	-52
2013-06-30	-438
2013-09-30	-818
2013-12-31	-1205
2014-03-31	-804
2014-06-30	-427
2014-09-30	-483
2014-12-31	-481
2015-03-31	-539
2015-06-30	-587
2015-09-30	-1048
2015-12-31	-2156
2016-03-31	-2565
2016-06-30	-4096
2016-09-30	-4635
2016-12-31	-5535
2017-03-31	-3802
2017-06-30	-638
2017-09-30	-954
2017-12-31	-261
2018-03-31	-208
2018-06-30	-327
2018-09-30	-283
2018-12-31	-1254
2019-03-31	-808
2019-06-30	-834
2019-09-30	-684
2019-12-31	-869
2020-03-31	-1170
2020-06-30	-866
2020-09-30	-75
2020-12-31	-177
2021-03-31	32
2021-06-30	937
2021-09-30	709
2021-12-31	1555
2022-03-31	1603
2022-06-30	1684
2022-09-30	2008
2022-12-31	1177
2023-03-31	1113
2023-06-30	1677
2023-09-30	2325