Quarter	US dollars
1986-09-30	230
1986-12-31	213
1987-03-31	339
1987-06-30	238
1987-09-30	221
1987-12-31	223
1988-03-31	232
1988-06-30	218
1988-09-30	176
1988-12-31	182
1989-03-31	185
1989-06-30	149
1989-09-30	162
1989-12-31	165
1990-03-31	206
1990-06-30	165
1990-09-30	220
1990-12-31	222
1991-03-31	254
1991-06-30	218
1991-09-30	194
1991-12-31	175
1992-03-31	159
1992-06-30	177
1992-09-30	175
1992-12-31	179
1993-03-31	176
1993-06-30	179
1993-09-30	168
1993-12-31	165
1994-03-31	176
1994-06-30	163
1994-09-30	199
1994-12-31	245
1995-03-31	197
1995-06-30	198
1995-09-30	201
1995-12-31	188
1996-03-31	177
1996-06-30	205
1996-09-30	164
1996-12-31	158
1997-03-31	204
1997-06-30	191
1997-09-30	172
1997-12-31	152
1998-03-31	188
1998-06-30	115
1998-09-30	118
1998-12-31	125
1999-03-31	158
1999-06-30	171
1999-09-30	248
1999-12-31	231
2000-03-31	180
2000-06-30	189
2000-09-30	240
2000-12-31	148
2001-03-31	119
2001-06-30	268
2001-09-30	91
2001-12-31	81
2002-03-31	131
2002-06-30	70
2002-09-30	73
2002-12-31	78
2003-03-31	79
2003-06-30	72
2003-09-30	136
2003-12-31	134
2004-03-31	189
2004-06-30	195
2004-09-30	185
2004-12-31	254
2005-03-31	259
2005-06-30	280
2005-09-30	246
2005-12-31	264
2006-03-31	302
2006-06-30	316
2006-09-30	363
2006-12-31	324
2007-03-31	316
2007-06-30	331
2007-09-30	320
2007-12-31	339
2008-03-31	473
2008-06-30	532
2008-09-30	523
2008-12-31	514
2009-03-31	479
2009-06-30	487
2009-09-30	531
2009-12-31	483
2010-03-31	544
2010-06-30	681
2010-09-30	768
2010-12-31	706
2011-03-31	728
2011-06-30	743
2011-09-30	855
2011-12-31	827
2012-03-31	776
2012-06-30	866
2012-09-30	872
2012-12-31	824
2013-03-31	795
2013-06-30	714
2013-09-30	739
2013-12-31	734
2014-03-31	729
2014-06-30	776
2014-09-30	835
2014-12-31	990
2015-03-31	1059
2015-06-30	844
2015-09-30	786
2015-12-31	1094
2016-03-31	923
2016-06-30	883
2016-09-30	886
2016-12-31	778
2017-03-31	991
2017-06-30	855
2017-09-30	781
2017-12-31	868
2018-03-31	952
2018-06-30	967
2018-09-30	872
2018-12-31	844
2019-03-31	805
2019-06-30	834
2019-09-30	723
2019-12-31	681
2020-03-31	643
2020-06-30	576
2020-09-30	711
2020-12-31	676
2021-03-31	568
2021-06-30	679
2021-09-30	572
2021-12-31	520
2022-03-31	432
2022-06-30	420
2022-09-30	409
2022-12-31	388
2023-03-31	394
2023-06-30	399
2023-09-30	386