Quarter	US dollars
2004-12-31	-58
2005-03-31	-62
2005-06-30	-32
2005-09-30	-85
2005-12-31	-136
2006-03-31	-130
2006-06-30	-146
2006-09-30	-163
2006-12-31	-143
2007-03-31	-24
2007-06-30	-363
2007-09-30	-287
2007-12-31	-370
2008-03-31	-535
2008-06-30	-223
2008-09-30	-257
2008-12-31	-257
2009-03-31	-297
2009-06-30	-259
2009-09-30	-305
2009-12-31	-292
2010-03-31	-261
2010-06-30	-362
2010-09-30	-441
2010-12-31	-470
2011-03-31	-471
2011-06-30	-517
2011-09-30	-450
2011-12-31	-442
2012-03-31	-515
2012-06-30	-519
2012-09-30	-535
2012-12-31	-252
2013-03-31	-226
2013-06-30	-284
2013-09-30	-406
2013-12-31	-473
2014-03-31	-537
2014-06-30	-573
2014-09-30	-644
2014-12-31	-691
2015-03-31	-658
2015-06-30	-667
2015-09-30	-879
2015-12-31	-851
2016-03-31	-666
2016-06-30	-741
2016-09-30	-742
2016-12-31	-711
2017-03-31	-669
2017-06-30	-631
2017-09-30	-625
2017-12-31	-644
2018-03-31	-591
2018-06-30	-694
2018-09-30	-763
2018-12-31	-751
2019-03-31	-710
2019-06-30	-756
2019-09-30	-764
2019-12-31	-701
2020-03-31	-649
2020-06-30	-615
2020-09-30	-547
2020-12-31	-517
2021-03-31	-523
2021-06-30	-489
2021-09-30	-520
2021-12-31	-489
2022-03-31	-390
2022-06-30	-376
2022-09-30	-414
2022-12-31	-420
2023-03-31	-406
2023-06-30	-385
2023-09-30	-402