Quarter	US dollars
1986-09-30	704
1986-12-31	776
1987-03-31	827
1987-06-30	826
1987-09-30	886
1987-12-31	977
1988-03-31	1012
1988-06-30	969
1988-09-30	1179
1988-12-31	1055
1989-03-31	1001
1989-06-30	908
1989-09-30	969
1989-12-31	990
1990-03-31	1031
1990-06-30	1079
1990-09-30	1099
1990-12-31	1016
1991-03-31	865
1991-06-30	671
1991-09-30	665
1991-12-31	604
1992-03-31	542
1992-06-30	510
1992-09-30	471
1992-12-31	381
1993-03-31	359
1993-06-30	333
1993-09-30	311
1993-12-31	290
1994-03-31	276
1994-06-30	270
1994-09-30	258
1994-12-31	248
1995-03-31	212
1995-06-30	216
1995-09-30	237
1995-12-31	216
1996-03-31	188
1996-06-30	186
1996-09-30	191
1996-12-31	192
1997-03-31	182
1997-06-30	186
1997-09-30	193
1997-12-31	191
1998-03-31	190
1998-06-30	191
1998-09-30	192
1998-12-31	191
1999-03-31	190
1999-06-30	188
1999-09-30	195
1999-12-31	194
2000-03-31	193
2000-06-30	192
2000-09-30	185
2000-12-31	160
2001-03-31	164
2001-06-30	146
2001-09-30	162
2001-12-31	162
2002-03-31	160
2002-06-30	149
2002-09-30	147
2002-12-31	150
2003-03-31	151
2003-06-30	162
2003-09-30	150
2003-12-31	161
2004-03-31	155
2004-06-30	154
2004-09-30	156
2004-12-31	163
2005-03-31	186
2005-06-30	113
2005-09-30	104
2005-12-31	127
2006-03-31	133
2006-06-30	28
2006-09-30	29
2006-12-31	46
2007-03-31	54
2007-06-30	62
2007-09-30	68
2007-12-31	116
2008-03-31	11
2008-06-30	31
2008-09-30	82
2008-12-31	37
2009-03-31	25
2009-06-30	26
2009-09-30	26
2009-12-31	20
2010-03-31	32
2010-06-30	39
2010-09-30	32
2010-12-31	53
2011-03-31	38
2011-06-30	48
2011-09-30	30
2011-12-31	48
2012-03-31	33
2012-06-30	37
2012-09-30	51
2012-12-31	61
2013-03-31	96
2013-06-30	31
2013-09-30	73
2013-12-31	62
2014-03-31	61
2014-06-30	74
2014-09-30	72
2014-12-31	69
2015-03-31	107
2015-06-30	69
2015-09-30	110
2015-12-31	94
2016-03-31	75
2016-06-30	70
2016-09-30	61
2016-12-31	19
2017-03-31	59
2017-06-30	35
2017-09-30	48
2017-12-31	99
2018-03-31	98
2018-06-30	253
2018-09-30	282
2018-12-31	295
2019-03-31	443
2019-06-30	452
2019-09-30	494
2019-12-31	552
2020-03-31	615
2020-06-30	732
2020-09-30	706
2020-12-31	735
2021-03-31	775
2021-06-30	809
2021-09-30	753
2021-12-31	777
2022-03-31	732
2022-06-30	767
2022-09-30	667
2022-12-31	658
2023-03-31	550
2023-06-30	568
2023-09-30	490