Quarter	US dollars
1986-09-30	259
1986-12-31	234
1987-03-31	253
1987-06-30	356
1987-09-30	253
1987-12-31	334
1988-03-31	440
1988-06-30	424
1988-09-30	429
1988-12-31	740
1989-03-31	578
1989-06-30	607
1989-09-30	672
1989-12-31	809
1990-03-31	917
1990-06-30	966
1990-09-30	915
1990-12-31	1041
1991-03-31	902
1991-06-30	957
1991-09-30	956
1991-12-31	1003
1992-03-31	881
1992-06-30	1050
1992-09-30	1124
1992-12-31	1039
1993-03-31	998
1993-06-30	906
1993-09-30	883
1993-12-31	861
1994-03-31	933
1994-06-30	1008
1994-09-30	1203
1994-12-31	1161
1995-03-31	1097
1995-06-30	1045
1995-09-30	1135
1995-12-31	1190
1996-03-31	1783
1996-06-30	1715
1996-09-30	1633
1996-12-31	1830
1997-03-31	1631
1997-06-30	1317
1997-09-30	1350
1997-12-31	1276
1998-03-31	1198
1998-06-30	1254
1998-09-30	1267
1998-12-31	1178
1999-03-31	1177
1999-06-30	1195
1999-09-30	1198
1999-12-31	1185
2000-03-31	1117
2000-06-30	1252
2000-09-30	1192
2000-12-31	1363
2001-03-31	1192
2001-06-30	1252
2001-09-30	1213
2001-12-31	975
2002-03-31	1004
2002-06-30	942
2002-09-30	950
2002-12-31	1079
2003-03-31	1141
2003-06-30	1180
2003-09-30	1160
2003-12-31	1347
2004-03-31	791
2004-06-30	963
2004-09-30	847
2004-12-31	760
2005-03-31	881
2005-06-30	823
2005-09-30	873
2005-12-31	870
2006-03-31	1034
2006-06-30	1427
2006-09-30	1394
2006-12-31	1308
2007-03-31	1862
2007-06-30	1396
2007-09-30	1421
2007-12-31	1508
2008-03-31	1244
2008-06-30	1249
2008-09-30	774
2008-12-31	663
2009-03-31	666
2009-06-30	443
2009-09-30	438
2009-12-31	501
2010-03-31	564
2010-06-30	490
2010-09-30	504
2010-12-31	416
2011-03-31	477
2011-06-30	407
2011-09-30	375
2011-12-31	420
2012-03-31	366
2012-06-30	431
2012-09-30	496
2012-12-31	444
2013-03-31	266
2013-06-30	289
2013-09-30	374
2013-12-31	445
2014-03-31	449
2014-06-30	602
2014-09-30	414
2014-12-31	409
2015-03-31	401
2015-06-30	322
2015-09-30	532
2015-12-31	423
2016-03-31	470
2016-06-30	418
2016-09-30	453
2016-12-31	346
2017-03-31	408
2017-06-30	380
2017-09-30	387
2017-12-31	433
2018-03-31	436
2018-06-30	409
2018-09-30	288
2018-12-31	334
2019-03-31	253
2019-06-30	265
2019-09-30	263
2019-12-31	285
2020-03-31	348
2020-06-30	302
2020-09-30	286
2020-12-31	264
2021-03-31	512
2021-06-30	198
2021-09-30	220
2021-12-31	322
2022-03-31	245
2022-06-30	121
2022-09-30	295
2022-12-31	205
2023-03-31	326
2023-06-30	215
2023-09-30	187