Quarterly US dollars
1986-09-30 259
1986-12-31 274
1987-03-31 248
1987-06-30 248
1987-09-30 189
1987-12-31 208
1988-03-31 191
1988-06-30 177
1988-09-30 177
1988-12-31 193
1989-03-31 201
1989-06-30 178
1989-09-30 171
1989-12-31 195
1990-03-31 188
1990-06-30 189
1990-09-30 202
1990-12-31 205
1991-03-31 191
1991-06-30 179
1991-09-30 204
1991-12-31 209
1992-03-31 196
1992-06-30 216
1992-09-30 241
1992-12-31 197
1993-03-31 207
1993-06-30 173
1993-09-30 181
1993-12-31 125
1994-03-31 115
1994-06-30 110
1994-09-30 109
1994-12-31 108
1995-03-31 107
1995-06-30 105
1995-09-30 114
1995-12-31 107
1996-03-31 123
1996-06-30 117
1996-09-30 117
1996-12-31 103
1997-03-31 100
1997-06-30 97
1997-09-30 95
1997-12-31 89
1998-03-31 88
1998-06-30 96
1998-09-30 96
1998-12-31 89
1999-03-31 84
1999-06-30 96
1999-09-30 131
1999-12-31 89
2000-03-31 74
2000-06-30 74
2000-09-30 72
2000-12-31 76
2001-03-31 76
2001-06-30 73
2001-09-30 51
2001-12-31 54
2002-03-31 52
2002-06-30 48
2002-09-30 55
2002-12-31 55
2003-03-31 61
2003-06-30 60
2003-09-30 22
2003-12-31 25
2004-03-31 32
2004-06-30 36
2004-09-30 38
2004-12-31 41
2005-03-31 43
2005-06-30 35
2005-09-30 46
2005-12-31 44
2006-03-31 43
2006-06-30 53
2006-09-30 55
2006-12-31 58
2007-03-31 70
2007-06-30 73
2007-09-30 108
2007-12-31 112
2008-03-31 87
2008-06-30 63
2008-09-30 92
2008-12-31 76
2009-03-31 58
2009-06-30 60
2009-09-30 85
2009-12-31 117
2010-03-31 72
2010-06-30 111
2010-09-30 111
2010-12-31 117
2011-03-31 83
2011-06-30 91
2011-09-30 132
2011-12-31 85
2012-03-31 83
2012-06-30 72
2012-09-30 104
2012-12-31 89
2013-03-31 60
2013-06-30 59
2013-09-30 86
2013-12-31 96
2014-03-31 65
2014-06-30 110
2014-09-30 135
2014-12-31 47
2015-03-31 36
2015-06-30 55
2015-09-30 60
2015-12-31 47
2016-03-31 35
2016-06-30 20
2016-09-30 38
2016-12-31 36
2017-03-31 57
2017-06-30 69
2017-09-30 47
2017-12-31 56
2018-03-31 104
2018-06-30 80
2018-09-30 90
2018-12-31 97
2019-03-31 39
2019-06-30 32
2019-09-30 39
2019-12-31 40
2020-03-31 75
2020-06-30 74
2020-09-30 40
2020-12-31 71
2021-03-31 66
2021-06-30 26
2021-09-30 28
2021-12-31 34
2022-03-31 31
2022-06-30 30
2022-09-30 63
2022-12-31 57
2023-03-31 19
2023-06-30 17
2023-09-30 14