Quarter	US dollars
1986-09-30	619
1986-12-31	810
1987-03-31	921
1987-06-30	1064
1987-09-30	1168
1987-12-31	1130
1988-03-31	941
1988-06-30	967
1988-09-30	1112
1988-12-31	1147
1989-03-31	1282
1989-06-30	1363
1989-09-30	1544
1989-12-31	1421
1990-03-31	1671
1990-06-30	1605
1990-09-30	1432
1990-12-31	1363
1991-03-31	1245
1991-06-30	1193
1991-09-30	1242
1991-12-31	1233
1992-03-31	1112
1992-06-30	1121
1992-09-30	980
1992-12-31	915
1993-03-31	847
1993-06-30	816
1993-09-30	802
1993-12-31	793
1994-03-31	789
1994-06-30	784
1994-09-30	784
1994-12-31	779
1995-03-31	777
1995-06-30	768
1995-09-30	769
1995-12-31	758
1996-03-31	746
1996-06-30	744
1996-09-30	743
1996-12-31	772
1997-03-31	752
1997-06-30	760
1997-09-30	737
1997-12-31	507
1998-03-31	760
1998-06-30	740
1998-09-30	754
1998-12-31	749
1999-03-31	741
1999-06-30	739
1999-09-30	746
1999-12-31	746
2000-03-31	756
2000-06-30	747
2000-09-30	740
2000-12-31	752
2001-03-31	466
2001-06-30	462
2001-09-30	644
2001-12-31	643
2002-03-31	634
2002-06-30	647
2002-09-30	642
2002-12-31	648
2003-03-31	646
2003-06-30	650
2003-09-30	606
2003-12-31	434
2004-03-31	424
2004-06-30	401
2004-09-30	393
2004-12-31	408
2005-03-31	385
2005-06-30	376
2005-09-30	365
2005-12-31	339
2006-03-31	339
2006-06-30	350
2006-09-30	348
2006-12-31	385
2007-03-31	146
2007-06-30	142
2007-09-30	134
2007-12-31	162
2008-03-31	415
2008-06-30	409
2008-09-30	512
2008-12-31	589
2009-03-31	551
2009-06-30	660
2009-09-30	520
2009-12-31	494
2010-03-31	467
2010-06-30	431
2010-09-30	371
2010-12-31	394
2011-03-31	404
2011-06-30	408
2011-09-30	314
2011-12-31	312
2012-03-31	315
2012-06-30	315
2012-09-30	377
2012-12-31	370
2013-03-31	302
2013-06-30	323
2013-09-30	75
2013-12-31	82
2014-03-31	85
2014-06-30	87
2014-09-30	231
2014-12-31	1044
2015-03-31	1055
2015-06-30	580
2015-09-30	562
2015-12-31	487
2016-03-31	506
2016-06-30	521
2016-09-30	465
2016-12-31	458
2017-03-31	371
2017-06-30	331
2017-09-30	351
2017-12-31	382
2018-03-31	336
2018-06-30	252
2018-09-30	202
2018-12-31	336
2019-03-31	427
2019-06-30	573
2019-09-30	632
2019-12-31	536
2020-03-31	391
2020-06-30	499
2020-09-30	292
2020-12-31	284
2021-03-31	751
2021-06-30	816
2021-09-30	875
2021-12-31	1176
2022-03-31	1558
2022-06-30	1877
2022-09-30	1906
2022-12-31	2426
2023-03-31	1616
2023-06-30	1934
2023-09-30	1992