Quarterly 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