| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 413 | 千吨 | 2026-9 |
| 1997 | 419 | 千吨 | 2026-9 |
| 1996 | 436 | 千吨 | 2026-9 |
| 1995 | 421 | 千吨 | 2026-9 |
| 1994 | 439 | 千吨 | 2026-9 |
| 1993 | 500 | 千吨 | 2026-9 |
| 1992 | 688 | 千吨 | 2026-9 |
| 1991 | 823 | 千吨 | 2026-9 |
| 1990 | 856 | 千吨 | 2026-9 |
| 1989 | 831 | 千吨 | 2026-9 |
| 1988 | 877 | 千吨 | 2026-9 |
| 1987 | 908 | 千吨 | 2026-9 |
| 1986 | 940 | 千吨 | 2026-9 |
| 1985 | 887 | 千吨 | 2026-9 |
| 1984 | 841 | 千吨 | 2026-9 |
| 1983 | 813 | 千吨 | 2026-9 |
| 1982 | 855 | 千吨 | 2026-9 |
| 1981 | 757 | 千吨 | 2026-9 |
| 1980 | 883 | 千吨 | 2026-9 |
| 1979 | 915 | 千吨 | 2026-9 |
| 1978 | 814 | 千吨 | 2026-9 |
| 1977 | 895 | 千吨 | 2026-9 |
| 1976 | 918 | 千吨 | 2026-9 |
| 1975 | 824 | 千吨 | 2026-9 |
| 1974 | 744 | 千吨 | 2026-9 |
| 1973 | 592 | 千吨 | 2026-9 |
| 1972 | 519 | 千吨 | 2026-9 |
| 1971 | 527 | 千吨 | 2026-9 |
| 1970 | 551 | 千吨 | 2026-9 |
| 1969 | 570 | 千吨 | 2026-9 |
| 1968 | 537 | 千吨 | 2026-9 |
| 1967 | 498 | 千吨 | 2026-9 |
| 1966 | 446 | 千吨 | 2026-9 |
| 1965 | 415 | 千吨 | 2026-9 |
| 1964 | 459 | 千吨 | 2026-9 |
| 1963 | 447 | 千吨 | 2026-9 |
| 1962 | 384 | 千吨 | 2026-9 |
| 1961 | 333 | 千吨 | 2026-9 |
| 1960 | 317 | 千吨 | 2026-9 |