Quarter	US dollars
1993-09-30	6
1993-12-31	12
1994-03-31	10
1994-06-30	10
1994-09-30	22
1994-12-31	21
1995-03-31	70
1995-06-30	105
1995-09-30	91
1995-12-31	236
1996-03-31	248
1996-06-30	345
1996-09-30	457
1996-12-31	594
1997-03-31	785
1997-06-30	810
1997-09-30	875
1997-12-31	1126
1998-03-31	1009
1998-06-30	1115
1998-09-30	1108
1998-12-31	1079
1999-03-31	1265
1999-06-30	1129
1999-09-30	1233
1999-12-31	1042
2000-03-31	1406
2000-06-30	1123
2000-09-30	1018
2000-12-31	620
2001-03-31	589
2001-06-30	573
2001-09-30	610
2001-12-31	502
2002-03-31	533
2002-06-30	508
2002-09-30	491
2002-12-31	472
2003-03-31	400
2003-06-30	513
2003-09-30	478
2003-12-31	639
2004-03-31	594
2004-06-30	452
2004-09-30	443
2004-12-31	256
2005-03-31	555
2005-06-30	791
2005-09-30	702
2005-12-31	688
2006-03-31	574
2006-06-30	567
2006-09-30	622
2006-12-31	670
2007-03-31	813
2007-06-30	598
2007-09-30	832
2007-12-31	1376
2008-03-31	1710
2008-06-30	1628
2008-09-30	1937
2008-12-31	1935
2009-03-31	674
2009-06-30	1155
2009-09-30	2164
2009-12-31	1029
2010-03-31	1091
2010-06-30	1164
2010-09-30	1204
2010-12-31	1206
2011-03-31	1262
2011-06-30	1327
2011-09-30	3418
2011-12-31	973
2012-03-31	1005
2012-06-30	948
2012-09-30	775
2012-12-31	703
2013-03-31	926
2013-06-30	1062
2013-09-30	1005
2013-12-31	782
2014-03-31	1100
2014-06-30	1127
2014-09-30	957
2014-12-31	715
2015-03-31	754
2015-06-30	759
2015-09-30	474
2015-12-31	550
2016-03-31	678
2016-06-30	669
2016-09-30	468
2016-12-31	467
2017-03-31	401
2017-06-30	421
2017-09-30	921
2017-12-31	1588
2018-03-31	2281
2018-06-30	2355
2018-09-30	1844
2018-12-31	1749
2019-03-31	1468
2019-06-30	1901
2019-09-30	1486
2019-12-31	781
2020-03-31	519
2020-06-30	852
2020-09-30	792
2020-12-31	295
2021-03-31	247
2021-06-30	193
2021-09-30	257
2021-12-31	293
2022-03-31	236
2022-06-30	203
2022-09-30	588
2022-12-31	506
2023-03-31	611
2023-06-30	582
2023-09-30	550