| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 593 | 千吨 | 2026-9 |
| 1995 | 581 | 千吨 | 2026-9 |
| 1994 | 560 | 千吨 | 2026-9 |
| 1993 | 556 | 千吨 | 2026-9 |
| 1992 | 550 | 千吨 | 2026-9 |
| 1991 | 492 | 千吨 | 2026-9 |
| 1990 | 401 | 千吨 | 2026-9 |
| 1989 | 494 | 千吨 | 2026-9 |
| 1988 | 506 | 千吨 | 2026-9 |
| 1987 | 504 | 千吨 | 2026-9 |
| 1986 | 482 | 千吨 | 2026-9 |
| 1985 | 460 | 千吨 | 2026-9 |
| 1984 | 426 | 千吨 | 2026-9 |
| 1983 | 402 | 千吨 | 2026-9 |
| 1982 | 426 | 千吨 | 2026-9 |
| 1981 | 440 | 千吨 | 2026-9 |
| 1980 | 437 | 千吨 | 2026-9 |
| 1979 | 429 | 千吨 | 2026-9 |
| 1978 | 419 | 千吨 | 2026-9 |
| 1977 | 407 | 千吨 | 2026-9 |
| 1976 | 394 | 千吨 | 2026-9 |
| 1975 | 417 | 千吨 | 2026-9 |
| 1974 | 444 | 千吨 | 2026-9 |
| 1973 | 454 | 千吨 | 2026-9 |
| 1972 | 437 | 千吨 | 2026-9 |
| 1971 | 484 | 千吨 | 2026-9 |
| 1970 | 524 | 千吨 | 2026-9 |
| 1969 | 514 | 千吨 | 2026-9 |
| 1968 | 505 | 千吨 | 2026-9 |
| 1967 | 496 | 千吨 | 2026-9 |
| 1966 | 500 | 千吨 | 2026-9 |
| 1965 | 491 | 千吨 | 2026-9 |
| 1964 | 498 | 千吨 | 2026-9 |