Quarter	US dollars
2004-12-31	27
2005-03-31	26
2005-06-30	23
2005-09-30	62
2005-12-31	19
2006-03-31	59
2006-06-30	17
2006-09-30	13
2006-12-31	12
2007-03-31	12
2007-06-30	10
2007-09-30	8
2007-12-31	14
2008-03-31	18
2008-06-30	16
2008-09-30	20
2008-12-31	37
2009-03-31	32
2009-06-30	69
2009-09-30	16
2009-12-31	11
2010-03-31	23
2010-06-30	24
2010-09-30	19
2010-12-31	8
2011-03-31	205
2011-06-30	310
2011-09-30	346
2011-12-31	377
2012-03-31	376
2012-06-30	395
2012-09-30	494
2012-12-31	516
2013-03-31	586
2013-06-30	707
2013-09-30	751
2013-12-31	683
2014-03-31	562
2014-06-30	771
2014-09-30	730
2014-12-31	745
2015-03-31	732
2015-06-30	628
2015-09-30	530
2015-12-31	510
2016-03-31	459
2016-06-30	332
2016-09-30	347
2016-12-31	340
2017-03-31	321
2017-06-30	355
2017-09-30	327
2017-12-31	553
2018-03-31	316
2018-06-30	293
2018-09-30	290
2018-12-31	272
2019-03-31	283
2019-06-30	283
2019-09-30	312
2019-12-31	341
2020-03-31	344
2020-06-30	352
2020-09-30	376
2020-12-31	349
2021-03-31	337
2021-06-30	330
2021-09-30	337
2021-12-31	357
2022-03-31	262
2022-06-30	276
2022-09-30	282
2022-12-31	275
2023-03-31	233
2023-06-30	230
2023-09-30	237