Quarterly US dollars
1986-09-30 704
1986-12-31 776
1987-03-31 827
1987-06-30 826
1987-09-30 886
1987-12-31 977
1988-03-31 1012
1988-06-30 969
1988-09-30 1179
1988-12-31 1055
1989-03-31 1001
1989-06-30 908
1989-09-30 969
1989-12-31 990
1990-03-31 1031
1990-06-30 1079
1990-09-30 1099
1990-12-31 1016
1991-03-31 865
1991-06-30 671
1991-09-30 665
1991-12-31 604
1992-03-31 542
1992-06-30 510
1992-09-30 471
1992-12-31 381
1993-03-31 359
1993-06-30 333
1993-09-30 311
1993-12-31 290
1994-03-31 276
1994-06-30 270
1994-09-30 258
1994-12-31 248
1995-03-31 212
1995-06-30 216
1995-09-30 237
1995-12-31 216
1996-03-31 188
1996-06-30 186
1996-09-30 191
1996-12-31 192
1997-03-31 182
1997-06-30 186
1997-09-30 193
1997-12-31 191
1998-03-31 190
1998-06-30 191
1998-09-30 192
1998-12-31 191
1999-03-31 190
1999-06-30 188
1999-09-30 195
1999-12-31 194
2000-03-31 193
2000-06-30 192
2000-09-30 185
2000-12-31 160
2001-03-31 164
2001-06-30 146
2001-09-30 162
2001-12-31 162
2002-03-31 160
2002-06-30 149
2002-09-30 147
2002-12-31 150
2003-03-31 151
2003-06-30 162
2003-09-30 150
2003-12-31 161
2004-03-31 155
2004-06-30 154
2004-09-30 156
2004-12-31 163
2005-03-31 186
2005-06-30 113
2005-09-30 104
2005-12-31 127
2006-03-31 133
2006-06-30 28
2006-09-30 29
2006-12-31 46
2007-03-31 54
2007-06-30 62
2007-09-30 68
2007-12-31 116
2008-03-31 11
2008-06-30 31
2008-09-30 82
2008-12-31 37
2009-03-31 25
2009-06-30 26
2009-09-30 26
2009-12-31 20
2010-03-31 32
2010-06-30 39
2010-09-30 32
2010-12-31 53
2011-03-31 38
2011-06-30 48
2011-09-30 30
2011-12-31 48
2012-03-31 33
2012-06-30 37
2012-09-30 51
2012-12-31 61
2013-03-31 96
2013-06-30 31
2013-09-30 73
2013-12-31 62
2014-03-31 61
2014-06-30 74
2014-09-30 72
2014-12-31 69
2015-03-31 107
2015-06-30 69
2015-09-30 110
2015-12-31 94
2016-03-31 75
2016-06-30 70
2016-09-30 61
2016-12-31 19
2017-03-31 59
2017-06-30 35
2017-09-30 48
2017-12-31 99
2018-03-31 98
2018-06-30 253
2018-09-30 282
2018-12-31 295
2019-03-31 443
2019-06-30 452
2019-09-30 494
2019-12-31 552
2020-03-31 615
2020-06-30 732
2020-09-30 706
2020-12-31 735
2021-03-31 775
2021-06-30 809
2021-09-30 753
2021-12-31 777
2022-03-31 732
2022-06-30 767
2022-09-30 667
2022-12-31 658
2023-03-31 550
2023-06-30 568
2023-09-30 490