Quarter	US dollars
2004-12-31	1999
2005-03-31	2214
2005-06-30	2402
2005-09-30	2779
2005-12-31	3009
2006-03-31	3707
2006-06-30	5324
2006-09-30	6124
2006-12-31	8294
2007-03-31	6572
2007-06-30	6200
2007-09-30	9305
2007-12-31	30451
2008-03-31	80462
2008-06-30	39742
2008-09-30	14210
2008-12-31	9675
2009-03-31	4944
2009-06-30	5293
2009-09-30	681
2009-12-31	-186
2010-03-31	-617
2010-06-30	-4306
2010-09-30	-2804
2010-12-31	-2411
2011-03-31	-1853
2011-06-30	-1779
2011-09-30	-974
2011-12-31	-326
2012-03-31	-395
2012-06-30	-337
2012-09-30	-86
2012-12-31	740
2013-03-31	336
2013-06-30	232
2013-09-30	1046
2013-12-31	1145
2014-03-31	268
2014-06-30	207
2014-09-30	173
2014-12-31	120
2015-03-31	86
2015-06-30	52
2015-09-30	9
2015-12-31	-43
2016-03-31	19
2016-06-30	-95
2016-09-30	-66
2016-12-31	-6
2017-03-31	43
2017-06-30	656
2017-09-30	759
2017-12-31	555
2018-03-31	182
2018-06-30	244
2018-09-30	162
2018-12-31	-17
2019-03-31	-1
2019-06-30	-78
2019-09-30	-144
2019-12-31	30
2020-03-31	-110
2020-06-30	-14
2020-09-30	-379
2020-12-31	-404
2021-03-31	-397
2021-06-30	-278
2021-09-30	-165
2021-12-31	-631
2022-03-31	-730
2022-06-30	-474
2022-09-30	-329
2022-12-31	-345
2023-03-31	-375
2023-06-30	-504
2023-09-30	-673