Quarterly Millions of US Dollars
1972-01-01 0
1972-04-01 0
1972-07-01 0
1972-10-01 0
1973-01-01 0
1973-04-01 0
1973-07-01 0
1973-10-01 0
1974-01-01 0
1974-04-01 0
1974-07-01 0
1974-10-01 0
1975-01-01 0
1975-04-01 0
1975-07-01 0
1975-10-01 0
1976-01-01 0
1976-04-01 0
1976-07-01 0
1976-10-01 0
1977-01-01 0
1977-04-01 0
1977-07-01 0
1977-10-01 0
1978-01-01 0
1978-04-01 0
1978-07-01 0
1978-10-01 53
1979-01-01 104
1979-04-01 136
1979-07-01 295
1979-10-01 643
1980-01-01 790
1980-04-01 1093
1980-07-01 1052
1980-10-01 729
1981-01-01 1011
1981-04-01 1106
1981-07-01 1103
1981-10-01 1373
1982-01-01 1283
1982-04-01 1330
1982-07-01 1227
1982-10-01 1288
1983-01-01 941
1983-04-01 732
1983-07-01 813
1983-10-01 537
1984-01-01 559
1984-04-01 274
1984-07-01 212
1984-10-01 331
1985-01-01 238
1985-04-01 240
1985-07-01 237
1985-10-01 87
1986-01-01 215
1986-04-01 256
1986-07-01 431
1986-10-01 601
1987-01-01 598
1987-04-01 638
1987-07-01 538
1987-10-01 372
1988-01-01 241
1988-04-01 103
1988-07-01 44
1988-10-01 55
1989-01-01 51
1989-04-01 175
1989-07-01 172
1989-10-01 250
1990-01-01 398
1990-04-01 312
1990-07-01 827
1990-10-01 1200
1991-01-01 992
1991-04-01 1432
1991-07-01 1030
1991-10-01 630
1992-01-01 1113
1992-04-01 1107
1992-07-01 712
1992-10-01 719
1993-01-01 554
1993-04-01 611
1993-07-01 564
1993-10-01 491
1994-01-01 152
1994-04-01 553
1994-07-01 682
1994-10-01 672
1995-01-01 783
1995-04-01 208
1995-07-01 1387
1995-10-01 2382
1996-01-01 4538
1996-04-01 5630
1996-07-01 4345
1996-10-01 3254
1997-01-01 1650
1997-04-01 1858
1997-07-01 1842
1997-10-01 2162
1998-01-01 1685
1998-04-01 378
1998-07-01 368
1998-10-01 40
1999-01-01 0
1999-04-01 0
1999-07-01 0
1999-10-01 0
2000-01-01 0
2000-04-01 0
2000-07-01 0
2000-10-01 0
2001-01-01 0
2001-04-01 0
2001-07-01 0
2001-10-01 200
2002-01-01 670
2002-04-01 699
2002-07-01 675
2002-10-01 475