Quarter	US dollars
1986-09-30	50
1986-12-31	46
1987-03-31	47
1987-06-30	47
1987-09-30	44
1987-12-31	41
1988-03-31	39
1988-06-30	49
1988-09-30	54
1988-12-31	67
1989-03-31	68
1989-06-30	79
1989-09-30	95
1989-12-31	63
1990-03-31	48
1990-06-30	60
1990-09-30	57
1990-12-31	60
1991-03-31	55
1991-06-30	56
1991-09-30	46
1991-12-31	46
1992-03-31	43
1992-06-30	31
1992-09-30	37
1992-12-31	37
1993-03-31	36
1993-06-30	34
1993-09-30	35
1993-12-31	30
1994-03-31	34
1994-06-30	33
1994-09-30	29
1994-12-31	18
1995-03-31	25
1995-06-30	26
1995-09-30	41
1995-12-31	24
1996-03-31	22
1996-06-30	38
1996-09-30	34
1996-12-31	19
1997-03-31	21
1997-06-30	16
1997-09-30	106
1997-12-31	17
1998-03-31	16
1998-06-30	19
1998-09-30	33
1998-12-31	61
1999-03-31	44
1999-06-30	48
1999-09-30	52
1999-12-31	63
2000-03-31	76
2000-06-30	76
2000-09-30	86
2000-12-31	72
2001-03-31	73
2001-06-30	53
2001-09-30	62
2001-12-31	66
2002-03-31	54
2002-06-30	59
2002-09-30	57
2002-12-31	46
2003-03-31	43
2003-06-30	52
2003-09-30	65
2003-12-31	60
2004-03-31	57
2004-06-30	49
2004-09-30	70
2004-12-31	79
2005-03-31	65
2005-06-30	41
2005-09-30	49
2005-12-31	61
2006-03-31	75
2006-06-30	82
2006-09-30	78
2006-12-31	93
2007-03-31	105
2007-06-30	117
2007-09-30	120
2007-12-31	122
2008-03-31	123
2008-06-30	177
2008-09-30	129
2008-12-31	131
2009-03-31	131
2009-06-30	140
2009-09-30	138
2009-12-31	151
2010-03-31	153
2010-06-30	147
2010-09-30	144
2010-12-31	142
2011-03-31	142
2011-06-30	135
2011-09-30	137
2011-12-31	151
2012-03-31	130
2012-06-30	150
2012-09-30	145
2012-12-31	123
2013-03-31	124
2013-06-30	123
2013-09-30	123
2013-12-31	118
2014-03-31	117
2014-06-30	104
2014-09-30	103
2014-12-31	96
2015-03-31	98
2015-06-30	86
2015-09-30	81
2015-12-31	80
2016-03-31	79
2016-06-30	79
2016-09-30	77
2016-12-31	76
2017-03-31	76
2017-06-30	77
2017-09-30	76
2017-12-31	77
2018-03-31	104
2018-06-30	105
2018-09-30	104
2018-12-31	104
2019-03-31	104
2019-06-30	97
2019-09-30	96
2019-12-31	96
2020-03-31	96
2020-06-30	96
2020-09-30	96
2020-12-31	97
2021-03-31	96
2021-06-30	96
2021-09-30	89
2021-12-31	87
2022-03-31	87
2022-06-30	87
2022-09-30	87
2022-12-31	86
2023-03-31	59
2023-06-30	58
2023-09-30	58