Quarter	US dollars
2004-12-31	-108
2005-03-31	-125
2005-06-30	-163
2005-09-30	-170
2005-12-31	-163
2006-03-31	-170
2006-06-30	-190
2006-09-30	-181
2006-12-31	-207
2007-03-31	-204
2007-06-30	-257
2007-09-30	-244
2007-12-31	-273
2008-03-31	-352
2008-06-30	-400
2008-09-30	-467
2008-12-31	-467
2009-03-31	-500
2009-06-30	-489
2009-09-30	-430
2009-12-31	-389
2010-03-31	-390
2010-06-30	-479
2010-09-30	-481
2010-12-31	-485
2011-03-31	-550
2011-06-30	-486
2011-09-30	-447
2011-12-31	-447
2012-03-31	-435
2012-06-30	-518
2012-09-30	-505
2012-12-31	-538
2013-03-31	-469
2013-06-30	-464
2013-09-30	-494
2013-12-31	-423
2014-03-31	-122
2014-06-30	-137
2014-09-30	-169
2014-12-31	-209
2015-03-31	-218
2015-06-30	-170
2015-09-30	-200
2015-12-31	-234
2016-03-31	-229
2016-06-30	-226
2016-09-30	-227
2016-12-31	-356
2017-03-31	-265
2017-06-30	-486
2017-09-30	-848
2017-12-31	-969
2018-03-31	-883
2018-06-30	-1013
2018-09-30	-1030
2018-12-31	-1055
2019-03-31	-977
2019-06-30	-970
2019-09-30	-1115
2019-12-31	-1077
2020-03-31	-1126
2020-06-30	-1048
2020-09-30	-1248
2020-12-31	-1421
2021-03-31	-1588
2021-06-30	-1537
2021-09-30	-1787
2021-12-31	-2009
2022-03-31	-2349
2022-06-30	-2282
2022-09-30	-2507
2022-12-31	-2805
2023-03-31	-2522
2023-06-30	-2284
2023-09-30	-2547