Quarter	US dollars
2004-12-31	221
2005-03-31	297
2005-06-30	290
2005-09-30	324
2005-12-31	345
2006-03-31	357
2006-06-30	318
2006-09-30	357
2006-12-31	346
2007-03-31	257
2007-06-30	317
2007-09-30	393
2007-12-31	327
2008-03-31	326
2008-06-30	332
2008-09-30	310
2008-12-31	240
2009-03-31	236
2009-06-30	260
2009-09-30	251
2009-12-31	299
2010-03-31	302
2010-06-30	316
2010-09-30	328
2010-12-31	271
2011-03-31	263
2011-06-30	260
2011-09-30	296
2011-12-31	271
2012-03-31	444
2012-06-30	345
2012-09-30	376
2012-12-31	319
2013-03-31	169
2013-06-30	146
2013-09-30	146
2013-12-31	274
2014-03-31	275
2014-06-30	313
2014-09-30	277
2014-12-31	279
2015-03-31	278
2015-06-30	322
2015-09-30	174
2015-12-31	163
2016-03-31	128
2016-06-30	122
2016-09-30	120
2016-12-31	139
2017-03-31	151
2017-06-30	260
2017-09-30	315
2017-12-31	347
2018-03-31	408
2018-06-30	556
2018-09-30	630
2018-12-31	340
2019-03-31	331
2019-06-30	339
2019-09-30	347
2019-12-31	394
2020-03-31	440
2020-06-30	460
2020-09-30	467
2020-12-31	498
2021-03-31	486
2021-06-30	511
2021-09-30	487
2021-12-31	527
2022-03-31	495
2022-06-30	531
2022-09-30	525
2022-12-31	510
2023-03-31	522
2023-06-30	513
2023-09-30	451