| 年度 | 数值 | 单位 | 发布日期 |
|---|---|---|---|
| 1987 | 7 | 千吨 | 2026-9 |
| 1986 | 7 | 千吨 | 2026-9 |
| 1985 | 30 | 千吨 | 2026-9 |
| 1984 | 27 | 千吨 | 2026-9 |
| 1983 | 25 | 千吨 | 2026-9 |
| 1982 | 32 | 千吨 | 2026-9 |
| 1981 | 70 | 千吨 | 2026-9 |
| 1980 | 35 | 千吨 | 2026-9 |
| 1979 | 33 | 千吨 | 2026-9 |
| 1978 | 38 | 千吨 | 2026-9 |
| 1977 | 33 | 千吨 | 2026-9 |
| 1976 | 30 | 千吨 | 2026-9 |
| 1975 | 23 | 千吨 | 2026-9 |
| 1974 | 26 | 千吨 | 2026-9 |
| 1973 | 30 | 千吨 | 2026-9 |
| 1972 | 32 | 千吨 | 2026-9 |
| 1971 | 25 | 千吨 | 2026-9 |
| 1970 | 48 | 千吨 | 2026-9 |
| 1969 | 101 | 千吨 | 2026-9 |
| 1968 | 101 | 千吨 | 2026-9 |
| 1967 | 85 | 千吨 | 2026-9 |
| 1966 | 27 | 千吨 | 2026-9 |
| 1965 | 2 | 千吨 | 2026-9 |
| 1964 | 11 | 千吨 | 2026-9 |
| 1963 | 43 | 千吨 | 2026-9 |
| 1962 | 61 | 千吨 | 2026-9 |
| 1961 | 67 | 千吨 | 2026-9 |
| 1960 | 0 | 千吨 | 2026-9 |