Quarter	US dollars
1986-09-30	720
1986-12-31	736
1987-03-31	739
1987-06-30	749
1987-09-30	732
1987-12-31	769
1988-03-31	783
1988-06-30	745
1988-09-30	745
1988-12-31	785
1989-03-31	771
1989-06-30	948
1989-09-30	903
1989-12-31	896
1990-03-31	874
1990-06-30	734
1990-09-30	753
1990-12-31	678
1991-03-31	625
1991-06-30	672
1991-09-30	670
1991-12-31	633
1992-03-31	622
1992-06-30	625
1992-09-30	572
1992-12-31	571
1993-03-31	567
1993-06-30	514
1993-09-30	494
1993-12-31	525
1994-03-31	517
1994-06-30	483
1994-09-30	509
1994-12-31	528
1995-03-31	492
1995-06-30	473
1995-09-30	469
1995-12-31	533
1996-03-31	494
1996-06-30	641
1996-09-30	629
1996-12-31	614
1997-03-31	724
1997-06-30	758
1997-09-30	745
1997-12-31	679
1998-03-31	780
1998-06-30	655
1998-09-30	601
1998-12-31	578
1999-03-31	605
1999-06-30	615
1999-09-30	514
1999-12-31	452
2000-03-31	485
2000-06-30	476
2000-09-30	160
2000-12-31	154
2001-03-31	159
2001-06-30	109
2001-09-30	124
2001-12-31	159
2002-03-31	156
2002-06-30	159
2002-09-30	214
2002-12-31	204
2003-03-31	240
2003-06-30	227
2003-09-30	241
2003-12-31	200
2004-03-31	199
2004-06-30	232
2004-09-30	295
2004-12-31	237
2005-03-31	287
2005-06-30	263
2005-09-30	309
2005-12-31	289
2006-03-31	423
2006-06-30	351
2006-09-30	352
2006-12-31	429
2007-03-31	208
2007-06-30	321
2007-09-30	384
2007-12-31	325
2008-03-31	199
2008-06-30	258
2008-09-30	209
2008-12-31	181
2009-03-31	177
2009-06-30	155
2009-09-30	145
2009-12-31	154
2010-03-31	137
2010-06-30	115
2010-09-30	115
2010-12-31	123
2011-03-31	101
2011-06-30	69
2011-09-30	176
2011-12-31	68
2012-03-31	215
2012-06-30	97
2012-09-30	152
2012-12-31	124
2013-03-31	104
2013-06-30	95
2013-09-30	96
2013-12-31	72
2014-03-31	62
2014-06-30	122
2014-09-30	99
2014-12-31	164
2015-03-31	143
2015-06-30	125
2015-09-30	149
2015-12-31	137
2016-03-31	246
2016-06-30	256
2016-09-30	248
2016-12-31	205
2017-03-31	228
2017-06-30	204
2017-09-30	296
2017-12-31	264
2018-03-31	241
2018-06-30	178
2018-09-30	329
2018-12-31	678
2019-03-31	651
2019-06-30	893
2019-09-30	654
2019-12-31	567
2020-03-31	592
2020-06-30	196
2020-09-30	201
2020-12-31	195
2021-03-31	192
2021-06-30	107
2021-09-30	85
2021-12-31	107
2022-03-31	185
2022-06-30	159
2022-09-30	115
2022-12-31	119
2023-03-31	109
2023-06-30	96
2023-09-30	111