Quarter	US dollars
1999-09-30	69
1999-12-31	108
2000-03-31	182
2000-06-30	129
2000-09-30	111
2000-12-31	254
2001-03-31	705
2001-06-30	679
2001-09-30	808
2001-12-31	670
2002-03-31	627
2002-06-30	1002
2002-09-30	1156
2002-12-31	975
2003-03-31	885
2003-06-30	640
2003-09-30	651
2003-12-31	682
2004-03-31	733
2004-06-30	698
2004-09-30	809
2004-12-31	730
2005-03-31	813
2005-06-30	1769
2005-09-30	1061
2005-12-31	2863
2006-03-31	1672
2006-06-30	2395
2006-09-30	2408
2006-12-31	2609
2007-03-31	2507
2007-06-30	3339
2007-09-30	4077
2007-12-31	4454
2008-03-31	8960
2008-06-30	10476
2008-09-30	10270
2008-12-31	12871
2009-03-31	9436
2009-06-30	8234
2009-09-30	5353
2009-12-31	4709
2010-03-31	5489
2010-06-30	6606
2010-09-30	6926
2010-12-31	6433
2011-03-31	4573
2011-06-30	6825
2011-09-30	9107
2011-12-31	5632
2012-03-31	5536
2012-06-30	5994
2012-09-30	5547
2012-12-31	3686
2013-03-31	3490
2013-06-30	4382
2013-09-30	4351
2013-12-31	3889
2014-03-31	4088
2014-06-30	3985
2014-09-30	4168
2014-12-31	5194
2015-03-31	5492
2015-06-30	4605
2015-09-30	5815
2015-12-31	4598
2016-03-31	5517
2016-06-30	5570
2016-09-30	3730
2016-12-31	4124
2017-03-31	4553
2017-06-30	3503
2017-09-30	3071
2017-12-31	3885
2018-03-31	4194
2018-06-30	4291
2018-09-30	3717
2018-12-31	3916
2019-03-31	3385
2019-06-30	3944
2019-09-30	4185
2019-12-31	4160
2020-03-31	7478
2020-06-30	6401
2020-09-30	5075
2020-12-31	4867
2021-03-31	4108
2021-06-30	3999
2021-09-30	3300
2021-12-31	3414
2022-03-31	3754
2022-06-30	4611
2022-09-30	5534
2022-12-31	5019
2023-03-31	4730
2023-06-30	4771
2023-09-30	4394