Quarter	US dollars
1999-09-30	315
1999-12-31	310
2000-03-31	322
2000-06-30	332
2000-09-30	340
2000-12-31	413
2001-03-31	424
2001-06-30	364
2001-09-30	354
2001-12-31	282
2002-03-31	288
2002-06-30	359
2002-09-30	337
2002-12-31	373
2003-03-31	477
2003-06-30	442
2003-09-30	573
2003-12-31	602
2004-03-31	895
2004-06-30	979
2004-09-30	1263
2004-12-31	1377
2005-03-31	1817
2005-06-30	1611
2005-09-30	1426
2005-12-31	1373
2006-03-31	1374
2006-06-30	1463
2006-09-30	1138
2006-12-31	1027
2007-03-31	1020
2007-06-30	951
2007-09-30	870
2007-12-31	884
2008-03-31	932
2008-06-30	872
2008-09-30	775
2008-12-31	758
2009-03-31	711
2009-06-30	736
2009-09-30	723
2009-12-31	670
2010-03-31	610
2010-06-30	528
2010-09-30	503
2010-12-31	488
2011-03-31	471
2011-06-30	442
2011-09-30	393
2011-12-31	374
2012-03-31	342
2012-06-30	273
2012-09-30	254
2012-12-31	231
2013-03-31	196
2013-06-30	156
2013-09-30	144
2013-12-31	150
2014-03-31	128
2014-06-30	89
2014-09-30	81
2014-12-31	70
2015-03-31	52
2015-06-30	49
2015-09-30	38
2015-12-31	30
2016-03-31	24
2016-06-30	20
2016-09-30	19
2016-12-31	16
2017-03-31	15
2017-06-30	12
2017-09-30	12
2017-12-31	8
2018-03-31	4
2018-06-30	3
2018-09-30	9
2018-12-31	1
2019-03-31	4
2019-06-30	5
2019-09-30	1
2019-12-31	0
2020-03-31	0
2020-06-30	0
2020-09-30	3
2020-12-31	1
2021-03-31	3
2021-06-30	4
2021-09-30	3
2021-12-31	3
2022-03-31	3
2022-06-30	2
2022-09-30	2
2022-12-31	2
2023-03-31	2
2023-06-30	2
2023-09-30	1