Quarter	US dollars
1993-09-30	75
1993-12-31	143
1994-03-31	204
1994-06-30	272
1994-09-30	393
1994-12-31	481
1995-03-31	734
1995-06-30	853
1995-09-30	649
1995-12-31	1108
1996-03-31	407
1996-06-30	470
1996-09-30	466
1996-12-31	561
1997-03-31	512
1997-06-30	429
1997-09-30	472
1997-12-31	432
1998-03-31	433
1998-06-30	716
1998-09-30	485
1998-12-31	203
1999-03-31	126
1999-06-30	265
1999-09-30	389
1999-12-31	246
2000-03-31	526
2000-06-30	200
2000-09-30	379
2000-12-31	155
2001-03-31	173
2001-06-30	214
2001-09-30	235
2001-12-31	411
2002-03-31	333
2002-06-30	256
2002-09-30	370
2002-12-31	162
2003-03-31	468
2003-06-30	207
2003-09-30	983
2003-12-31	749
2004-03-31	1658
2004-06-30	1971
2004-09-30	1393
2004-12-31	1965
2005-03-31	2340
2005-06-30	1104
2005-09-30	1671
2005-12-31	1154
2006-03-31	1770
2006-06-30	1031
2006-09-30	1992
2006-12-31	1338
2007-03-31	2365
2007-06-30	2930
2007-09-30	2369
2007-12-31	1525
2008-03-31	650
2008-06-30	843
2008-09-30	1275
2008-12-31	259
2009-03-31	793
2009-06-30	998
2009-09-30	1551
2009-12-31	1523
2010-03-31	1374
2010-06-30	1611
2010-09-30	1524
2010-12-31	1469
2011-03-31	1874
2011-06-30	1167
2011-09-30	1019
2011-12-31	784
2012-03-31	786
2012-06-30	775
2012-09-30	816
2012-12-31	779
2013-03-31	701
2013-06-30	567
2013-09-30	599
2013-12-31	698
2014-03-31	1013
2014-06-30	696
2014-09-30	1413
2014-12-31	727
2015-03-31	945
2015-06-30	976
2015-09-30	1298
2015-12-31	1318
2016-03-31	1174
2016-06-30	1072
2016-09-30	1260
2016-12-31	1183
2017-03-31	1427
2017-06-30	904
2017-09-30	1537
2017-12-31	1312
2018-03-31	1053
2018-06-30	980
2018-09-30	1432
2018-12-31	1273
2019-03-31	1393
2019-06-30	786
2019-09-30	1077
2019-12-31	829
2020-03-31	1575
2020-06-30	2075
2020-09-30	2140
2020-12-31	1025
2021-03-31	943
2021-06-30	385
2021-09-30	277
2021-12-31	250
2022-03-31	209
2022-06-30	250
2022-09-30	243
2022-12-31	219
2023-03-31	223
2023-06-30	194
2023-09-30	162