| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 54 | 千吨 | 2026-9 |
| 1995 | 68 | 千吨 | 2026-9 |
| 1994 | 55 | 千吨 | 2026-9 |
| 1993 | 71 | 千吨 | 2026-9 |
| 1992 | 64 | 千吨 | 2026-9 |
| 1991 | 154 | 千吨 | 2026-9 |
| 1990 | 80 | 千吨 | 2026-9 |
| 1989 | 107 | 千吨 | 2026-9 |
| 1988 | 261 | 千吨 | 2026-9 |
| 1987 | 246 | 千吨 | 2026-9 |
| 1986 | 206 | 千吨 | 2026-9 |
| 1985 | 87 | 千吨 | 2026-9 |
| 1984 | 87 | 千吨 | 2026-9 |
| 1983 | 107 | 千吨 | 2026-9 |
| 1982 | 153 | 千吨 | 2026-9 |
| 1981 | 252 | 千吨 | 2026-9 |
| 1980 | 239 | 千吨 | 2026-9 |
| 1979 | 155 | 千吨 | 2026-9 |
| 1978 | 124 | 千吨 | 2026-9 |
| 1977 | 136 | 千吨 | 2026-9 |
| 1976 | 110 | 千吨 | 2026-9 |
| 1975 | 143 | 千吨 | 2026-9 |
| 1974 | 153 | 千吨 | 2026-9 |
| 1973 | 123 | 千吨 | 2026-9 |
| 1972 | 28 | 千吨 | 2026-9 |
| 1971 | 66 | 千吨 | 2026-9 |
| 1970 | 52 | 千吨 | 2026-9 |
| 1969 | 16 | 千吨 | 2026-9 |
| 1968 | 17 | 千吨 | 2026-9 |
| 1967 | 14 | 千吨 | 2026-9 |
| 1966 | 5 | 千吨 | 2026-9 |
| 1965 | 15 | 千吨 | 2026-9 |
| 1964 | 0 | 千吨 | 2026-9 |