Quarter	US dollars
2004-12-31	313
2005-03-31	219
2005-06-30	197
2005-09-30	159
2005-12-31	173
2006-03-31	208
2006-06-30	192
2006-09-30	4
2006-12-31	562
2007-03-31	643
2007-06-30	1232
2007-09-30	1771
2007-12-31	1364
2008-03-31	2035
2008-06-30	1039
2008-09-30	1868
2008-12-31	1104
2009-03-31	2656
2009-06-30	1340
2009-09-30	1375
2009-12-31	1113
2010-03-31	889
2010-06-30	777
2010-09-30	726
2010-12-31	2906
2011-03-31	-420
2011-06-30	1557
2011-09-30	2183
2011-12-31	2172
2012-03-31	2014
2012-06-30	2464
2012-09-30	3440
2012-12-31	3282
2013-03-31	3360
2013-06-30	2392
2013-09-30	2602
2013-12-31	1749
2014-03-31	4587
2014-06-30	4274
2014-09-30	5091
2014-12-31	6393
2015-03-31	6727
2015-06-30	6262
2015-09-30	6880
2015-12-31	6383
2016-03-31	8516
2016-06-30	8542
2016-09-30	9651
2016-12-31	7405
2017-03-31	7314
2017-06-30	8034
2017-09-30	8150
2017-12-31	3962
2018-03-31	4026
2018-06-30	3598
2018-09-30	3365
2018-12-31	3566
2019-03-31	7031
2019-06-30	3085
2019-09-30	3542
2019-12-31	2823
2020-03-31	2988
2020-06-30	1587
2020-09-30	1767
2020-12-31	1153
2021-03-31	764
2021-06-30	768
2021-09-30	523
2021-12-31	433
2022-03-31	671
2022-06-30	385
2022-09-30	-18
2022-12-31	-77
2023-03-31	107
2023-06-30	-76
2023-09-30	-85