Quarterly US dollars
1993-12-31 6
1994-03-31 6
1994-06-30 6
1994-09-30 6
1994-12-31 6
1995-03-31 0
1995-06-30 1
1995-09-30 3
1995-12-31 2
1996-03-31 2
1996-06-30 76
1996-09-30 22
1996-12-31 59
1997-03-31 73
1997-06-30 108
1997-09-30 147
1997-12-31 144
1998-03-31 179
1998-06-30 161
1998-09-30 176
1998-12-31 203
1999-03-31 195
1999-06-30 178
1999-09-30 178
1999-12-31 264
2000-03-31 343
2000-06-30 319
2000-09-30 278
2000-12-31 248
2001-03-31 157
2001-06-30 228
2001-09-30 251
2001-12-31 190
2002-03-31 223
2002-06-30 245
2002-09-30 197
2002-12-31 180
2003-03-31 194
2003-06-30 154
2003-09-30 169
2003-12-31 147
2004-03-31 79
2004-06-30 69
2004-09-30 85
2004-12-31 99
2005-03-31 81
2005-06-30 36
2005-09-30 45
2005-12-31 52
2006-03-31 82
2006-06-30 84
2006-09-30 36
2006-12-31 96
2007-03-31 73
2007-06-30 91
2007-09-30 410
2007-12-31 228
2008-03-31 113
2008-06-30 123
2008-09-30 98
2008-12-31 197
2009-03-31 269
2009-06-30 266
2009-09-30 319
2009-12-31 330
2010-03-31 316
2010-06-30 333
2010-09-30 526
2010-12-31 440
2011-03-31 306
2011-06-30 279
2011-09-30 381
2011-12-31 248
2012-03-31 243
2012-06-30 264
2012-09-30 266
2012-12-31 293
2013-03-31 369
2013-06-30 366
2013-09-30 271
2013-12-31 301
2014-03-31 343
2014-06-30 329
2014-09-30 341
2014-12-31 231
2015-03-31 96
2015-06-30 88
2015-09-30 119
2015-12-31 172
2016-03-31 173
2016-06-30 229
2016-09-30 186
2016-12-31 114
2017-03-31 361
2017-06-30 194
2017-09-30 48
2017-12-31 118
2018-03-31 376
2018-06-30 334
2018-09-30 63
2018-12-31 96
2019-03-31 187
2019-06-30 140
2019-09-30 125
2019-12-31 103
2020-03-31 140
2020-06-30 103
2020-09-30 114
2020-12-31 89
2021-03-31 38
2021-06-30 16
2021-09-30 58
2021-12-31 40
2022-03-31 8
2022-06-30 16
2022-09-30 26
2022-12-31 47
2023-03-31 272
2023-06-30 173
2023-09-30 149