Quarter	US dollars
1986-09-30	439
1986-12-31	459
1987-03-31	450
1987-06-30	449
1987-09-30	441
1987-12-31	485
1988-03-31	487
1988-06-30	434
1988-09-30	442
1988-12-31	449
1989-03-31	439
1989-06-30	374
1989-09-30	444
1989-12-31	429
1990-03-31	427
1990-06-30	396
1990-09-30	428
1990-12-31	487
1991-03-31	416
1991-06-30	525
1991-09-30	755
1991-12-31	773
1992-03-31	761
1992-06-30	675
1992-09-30	689
1992-12-31	634
1993-03-31	664
1993-06-30	638
1993-09-30	610
1993-12-31	513
1994-03-31	542
1994-06-30	551
1994-09-30	629
1994-12-31	539
1995-03-31	452
1995-06-30	500
1995-09-30	546
1995-12-31	593
1996-03-31	557
1996-06-30	644
1996-09-30	606
1996-12-31	588
1997-03-31	505
1997-06-30	557
1997-09-30	649
1997-12-31	583
1998-03-31	463
1998-06-30	607
1998-09-30	679
1998-12-31	572
1999-03-31	425
1999-06-30	487
1999-09-30	513
1999-12-31	467
2000-03-31	382
2000-06-30	256
2000-09-30	270
2000-12-31	343
2001-03-31	235
2001-06-30	248
2001-09-30	318
2001-12-31	229
2002-03-31	126
2002-06-30	118
2002-09-30	208
2002-12-31	180
2003-03-31	91
2003-06-30	97
2003-09-30	120
2003-12-31	102
2004-03-31	104
2004-06-30	106
2004-09-30	142
2004-12-31	117
2005-03-31	99
2005-06-30	106
2005-09-30	125
2005-12-31	114
2006-03-31	85
2006-06-30	103
2006-09-30	104
2006-12-31	96
2007-03-31	78
2007-06-30	90
2007-09-30	109
2007-12-31	105
2008-03-31	104
2008-06-30	154
2008-09-30	100
2008-12-31	94
2009-03-31	63
2009-06-30	62
2009-09-30	70
2009-12-31	73
2010-03-31	56
2010-06-30	57
2010-09-30	65
2010-12-31	66
2011-03-31	90
2011-06-30	131
2011-09-30	127
2011-12-31	172
2012-03-31	157
2012-06-30	131
2012-09-30	110
2012-12-31	150
2013-03-31	167
2013-06-30	168
2013-09-30	206
2013-12-31	286
2014-03-31	246
2014-06-30	277
2014-09-30	283
2014-12-31	205
2015-03-31	204
2015-06-30	181
2015-09-30	179
2015-12-31	178
2016-03-31	171
2016-06-30	190
2016-09-30	194
2016-12-31	136
2017-03-31	111
2017-06-30	129
2017-09-30	137
2017-12-31	175
2018-03-31	141
2018-06-30	137
2018-09-30	175
2018-12-31	158
2019-03-31	122
2019-06-30	154
2019-09-30	153
2019-12-31	155
2020-03-31	112
2020-06-30	163
2020-09-30	101
2020-12-31	90
2021-03-31	86
2021-06-30	111
2021-09-30	95
2021-12-31	91
2022-03-31	96
2022-06-30	96
2022-09-30	86
2022-12-31	86
2023-03-31	78
2023-06-30	79
2023-09-30	99