| 年度 | 数值 | 单位 | 发布日期 |
|---|---|---|---|
| 1987 | 6 | 千吨 | 2026-9 |
| 1986 | 6 | 千吨 | 2026-9 |
| 1985 | 0 | 千吨 | 2026-9 |
| 1984 | 0 | 千吨 | 2026-9 |
| 1983 | 0 | 千吨 | 2026-9 |
| 1982 | 0 | 千吨 | 2026-9 |
| 1981 | 0 | 千吨 | 2026-9 |
| 1980 | 0 | 千吨 | 2026-9 |
| 1979 | 0 | 千吨 | 2026-9 |
| 1978 | 0 | 千吨 | 2026-9 |
| 1977 | 0 | 千吨 | 2026-9 |
| 1976 | 38 | 千吨 | 2026-9 |
| 1975 | 41 | 千吨 | 2026-9 |
| 1974 | 53 | 千吨 | 2026-9 |
| 1973 | 68 | 千吨 | 2026-9 |
| 1972 | 50 | 千吨 | 2026-9 |
| 1971 | 36 | 千吨 | 2026-9 |
| 1970 | 28 | 千吨 | 2026-9 |
| 1969 | 20 | 千吨 | 2026-9 |
| 1968 | 56 | 千吨 | 2026-9 |
| 1967 | 117 | 千吨 | 2026-9 |
| 1966 | 124 | 千吨 | 2026-9 |
| 1965 | 31 | 千吨 | 2026-9 |
| 1964 | 62 | 千吨 | 2026-9 |
| 1963 | 185 | 千吨 | 2026-9 |
| 1962 | 103 | 千吨 | 2026-9 |
| 1961 | 7 | 千吨 | 2026-9 |
| 1960 | 0 | 千吨 | 2026-9 |