Quarter	US dollars
1999-09-30	84
1999-12-31	114
2000-03-31	113
2000-06-30	167
2000-09-30	164
2000-12-31	121
2001-03-31	98
2001-06-30	77
2001-09-30	81
2001-12-31	82
2002-03-31	90
2002-06-30	133
2002-09-30	184
2002-12-31	270
2003-03-31	286
2003-06-30	351
2003-09-30	399
2003-12-31	433
2004-03-31	494
2004-06-30	517
2004-09-30	420
2004-12-31	432
2005-03-31	556
2005-06-30	604
2005-09-30	702
2005-12-31	609
2006-03-31	1247
2006-06-30	2593
2006-09-30	1515
2006-12-31	1644
2007-03-31	4854
2007-06-30	7432
2007-09-30	8571
2007-12-31	7820
2008-03-31	9093
2008-06-30	18876
2008-09-30	18976
2008-12-31	15540
2009-03-31	14939
2009-06-30	10826
2009-09-30	8883
2009-12-31	8449
2010-03-31	8712
2010-06-30	7825
2010-09-30	8864
2010-12-31	10569
2011-03-31	10306
2011-06-30	9276
2011-09-30	12896
2011-12-31	19218
2012-03-31	11190
2012-06-30	14803
2012-09-30	7898
2012-12-31	5867
2013-03-31	5266
2013-06-30	7377
2013-09-30	10170
2013-12-31	7801
2014-03-31	5667
2014-06-30	6411
2014-09-30	5016
2014-12-31	4790
2015-03-31	4791
2015-06-30	2904
2015-09-30	2733
2015-12-31	2426
2016-03-31	2745
2016-06-30	2408
2016-09-30	2861
2016-12-31	2502
2017-03-31	3981
2017-06-30	1752
2017-09-30	1032
2017-12-31	1771
2018-03-31	1210
2018-06-30	927
2018-09-30	1909
2018-12-31	1318
2019-03-31	1468
2019-06-30	1448
2019-09-30	1132
2019-12-31	984
2020-03-31	2633
2020-06-30	2096
2020-09-30	1824
2020-12-31	1748
2021-03-31	1644
2021-06-30	1206
2021-09-30	1381
2021-12-31	1319
2022-03-31	1681
2022-06-30	2995
2022-09-30	3730
2022-12-31	3041
2023-03-31	2279
2023-06-30	2220
2023-09-30	2391