Quarter	US dollars
2004-12-31	75
2005-03-31	110
2005-06-30	117
2005-09-30	168
2005-12-31	185
2006-03-31	173
2006-06-30	163
2006-09-30	189
2006-12-31	317
2007-03-31	392
2007-06-30	492
2007-09-30	509
2007-12-31	432
2008-03-31	576
2008-06-30	502
2008-09-30	474
2008-12-31	482
2009-03-31	500
2009-06-30	527
2009-09-30	457
2009-12-31	468
2010-03-31	441
2010-06-30	414
2010-09-30	443
2010-12-31	459
2011-03-31	433
2011-06-30	443
2011-09-30	441
2011-12-31	450
2012-03-31	510
2012-06-30	546
2012-09-30	547
2012-12-31	629
2013-03-31	484
2013-06-30	388
2013-09-30	408
2013-12-31	466
2014-03-31	455
2014-06-30	439
2014-09-30	436
2014-12-31	414
2015-03-31	324
2015-06-30	318
2015-09-30	312
2015-12-31	304
2016-03-31	275
2016-06-30	275
2016-09-30	260
2016-12-31	235
2017-03-31	213
2017-06-30	331
2017-09-30	326
2017-12-31	362
2018-03-31	406
2018-06-30	388
2018-09-30	369
2018-12-31	215
2019-03-31	194
2019-06-30	271
2019-09-30	325
2019-12-31	300
2020-03-31	308
2020-06-30	281
2020-09-30	341
2020-12-31	344
2021-03-31	425
2021-06-30	419
2021-09-30	414
2021-12-31	376
2022-03-31	386
2022-06-30	393
2022-09-30	403
2022-12-31	363
2023-03-31	290
2023-06-30	278
2023-09-30	255