Quarterly US dollars
1986-09-30 26
1986-12-31 23
1987-03-31 26
1987-06-30 25
1987-09-30 24
1987-12-31 29
1988-03-31 30
1988-06-30 28
1988-09-30 27
1988-12-31 23
1989-03-31 18
1989-06-30 17
1989-09-30 21
1989-12-31 16
1990-03-31 17
1990-06-30 12
1990-09-30 6
1990-12-31 7
1991-03-31 7
1991-06-30 7
1991-09-30 12
1991-12-31 7
1992-03-31 6
1992-06-30 6
1992-09-30 6
1992-12-31 6
1993-03-31 5
1993-06-30 7
1993-09-30 5
1993-12-31 15
1994-03-31 23
1994-06-30 27
1994-09-30 20
1994-12-31 14
1995-03-31 8
1995-06-30 12
1995-09-30 21
1995-12-31 22
1996-03-31 30
1996-06-30 22
1996-09-30 27
1996-12-31 19
1997-03-31 11
1997-06-30 8
1997-09-30 68
1997-12-31 10
1998-03-31 11
1998-06-30 36
1998-09-30 54
1998-12-31 16
1999-03-31 47
1999-06-30 18
1999-09-30 11
1999-12-31 11
2000-03-31 22
2000-06-30 23
2000-09-30 25
2000-12-31 11
2001-03-31 11
2001-06-30 11
2001-09-30 19
2001-12-31 20
2002-03-31 10
2002-06-30 9
2002-09-30 39
2002-12-31 45
2003-03-31 134
2003-06-30 49
2003-09-30 68
2003-12-31 95
2004-03-31 67
2004-06-30 80
2004-09-30 95
2004-12-31 125
2005-03-31 136
2005-06-30 110
2005-09-30 94
2005-12-31 133
2006-03-31 190
2006-06-30 240
2006-09-30 220
2006-12-31 181
2007-03-31 98
2007-06-30 102
2007-09-30 110
2007-12-31 107
2008-03-31 159
2008-06-30 12
2008-09-30 12
2008-12-31 16
2009-03-31 13
2009-06-30 24
2009-09-30 20
2009-12-31 26
2010-03-31 51
2010-06-30 35
2010-09-30 50
2010-12-31 80
2011-03-31 60
2011-06-30 32
2011-09-30 114
2011-12-31 115
2012-03-31 154
2012-06-30 172
2012-09-30 160
2012-12-31 169
2013-03-31 179
2013-06-30 176
2013-09-30 159
2013-12-31 170
2014-03-31 202
2014-06-30 210
2014-09-30 254
2014-12-31 264
2015-03-31 265
2015-06-30 252
2015-09-30 314
2015-12-31 293
2016-03-31 247
2016-06-30 256
2016-09-30 232
2016-12-31 229
2017-03-31 218
2017-06-30 226
2017-09-30 108
2017-12-31 111
2018-03-31 98
2018-06-30 79
2018-09-30 76
2018-12-31 111
2019-03-31 118
2019-06-30 160
2019-09-30 144
2019-12-31 127
2020-03-31 133
2020-06-30 115
2020-09-30 135
2020-12-31 146
2021-03-31 149
2021-06-30 183
2021-09-30 163
2021-12-31 144
2022-03-31 156
2022-06-30 147
2022-09-30 150
2022-12-31 294
2023-03-31 303
2023-06-30 310
2023-09-30 230