Quarter	US dollars
1986-09-30	190
1986-12-31	189
1987-03-31	220
1987-06-30	225
1987-09-30	169
1987-12-31	209
1988-03-31	190
1988-06-30	184
1988-09-30	179
1988-12-31	175
1989-03-31	160
1989-06-30	158
1989-09-30	163
1989-12-31	209
1990-03-31	176
1990-06-30	151
1990-09-30	152
1990-12-31	203
1991-03-31	181
1991-06-30	157
1991-09-30	126
1991-12-31	159
1992-03-31	170
1992-06-30	156
1992-09-30	172
1992-12-31	129
1993-03-31	139
1993-06-30	136
1993-09-30	179
1993-12-31	176
1994-03-31	185
1994-06-30	176
1994-09-30	186
1994-12-31	177
1995-03-31	234
1995-06-30	191
1995-09-30	228
1995-12-31	285
1996-03-31	242
1996-06-30	273
1996-09-30	411
1996-12-31	539
1997-03-31	620
1997-06-30	763
1997-09-30	739
1997-12-31	591
1998-03-31	671
1998-06-30	580
1998-09-30	494
1998-12-31	316
1999-03-31	309
1999-06-30	408
1999-09-30	353
1999-12-31	315
2000-03-31	321
2000-06-30	458
2000-09-30	427
2000-12-31	457
2001-03-31	630
2001-06-30	673
2001-09-30	517
2001-12-31	485
2002-03-31	436
2002-06-30	576
2002-09-30	556
2002-12-31	415
2003-03-31	481
2003-06-30	486
2003-09-30	666
2003-12-31	514
2004-03-31	584
2004-06-30	608
2004-09-30	665
2004-12-31	1014
2005-03-31	1037
2005-06-30	870
2005-09-30	797
2005-12-31	798
2006-03-31	787
2006-06-30	748
2006-09-30	664
2006-12-31	722
2007-03-31	691
2007-06-30	708
2007-09-30	712
2007-12-31	658
2008-03-31	761
2008-06-30	743
2008-09-30	601
2008-12-31	475
2009-03-31	507
2009-06-30	470
2009-09-30	791
2009-12-31	1228
2010-03-31	1145
2010-06-30	301
2010-09-30	356
2010-12-31	677
2011-03-31	422
2011-06-30	560
2011-09-30	1152
2011-12-31	1160
2012-03-31	870
2012-06-30	915
2012-09-30	709
2012-12-31	951
2013-03-31	606
2013-06-30	1131
2013-09-30	829
2013-12-31	1028
2014-03-31	1063
2014-06-30	1088
2014-09-30	2714
2014-12-31	1180
2015-03-31	797
2015-06-30	803
2015-09-30	723
2015-12-31	264
2016-03-31	276
2016-06-30	337
2016-09-30	370
2016-12-31	420
2017-03-31	510
2017-06-30	607
2017-09-30	845
2017-12-31	733
2018-03-31	641
2018-06-30	863
2018-09-30	1010
2018-12-31	1048
2019-03-31	1177
2019-06-30	1103
2019-09-30	1212
2019-12-31	1127
2020-03-31	690
2020-06-30	413
2020-09-30	357
2020-12-31	219
2021-03-31	225
2021-06-30	219
2021-09-30	221
2021-12-31	219
2022-03-31	161
2022-06-30	348
2022-09-30	317
2022-12-31	330
2023-03-31	431
2023-06-30	417
2023-09-30	386