| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 403 | 千吨 | 2026-9 |
| 1995 | 328 | 千吨 | 2026-9 |
| 1994 | 317 | 千吨 | 2026-9 |
| 1993 | 297 | 千吨 | 2026-9 |
| 1992 | 297 | 千吨 | 2026-9 |
| 1991 | 272 | 千吨 | 2026-9 |
| 1990 | 264 | 千吨 | 2026-9 |
| 1989 | 263 | 千吨 | 2026-9 |
| 1988 | 265 | 千吨 | 2026-9 |
| 1987 | 305 | 千吨 | 2026-9 |
| 1986 | 296 | 千吨 | 2026-9 |
| 1985 | 280 | 千吨 | 2026-9 |
| 1984 | 280 | 千吨 | 2026-9 |
| 1983 | 202 | 千吨 | 2026-9 |
| 1982 | 196 | 千吨 | 2026-9 |
| 1981 | 187 | 千吨 | 2026-9 |
| 1980 | 163 | 千吨 | 2026-9 |
| 1979 | 186 | 千吨 | 2026-9 |
| 1978 | 164 | 千吨 | 2026-9 |
| 1977 | 150 | 千吨 | 2026-9 |
| 1976 | 128 | 千吨 | 2026-9 |
| 1975 | 105 | 千吨 | 2026-9 |
| 1974 | 102 | 千吨 | 2026-9 |
| 1973 | 83 | 千吨 | 2026-9 |
| 1972 | 57 | 千吨 | 2026-9 |
| 1971 | 58 | 千吨 | 2026-9 |
| 1970 | 52 | 千吨 | 2026-9 |
| 1969 | 49 | 千吨 | 2026-9 |
| 1968 | 44 | 千吨 | 2026-9 |
| 1967 | 33 | 千吨 | 2026-9 |
| 1966 | 31 | 千吨 | 2026-9 |
| 1965 | 27 | 千吨 | 2026-9 |
| 1964 | 21 | 千吨 | 2026-9 |