| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1992 | 57 | 千吨 | 2026-9 |
| 1991 | 54 | 千吨 | 2026-9 |
| 1990 | 45 | 千吨 | 2026-9 |
| 1989 | 42 | 千吨 | 2026-9 |
| 1988 | 39 | 千吨 | 2026-9 |
| 1987 | 34 | 千吨 | 2026-9 |
| 1986 | 23 | 千吨 | 2026-9 |
| 1985 | 27 | 千吨 | 2026-9 |
| 1984 | 23 | 千吨 | 2026-9 |
| 1983 | 21 | 千吨 | 2026-9 |
| 1982 | 22 | 千吨 | 2026-9 |
| 1981 | 13 | 千吨 | 2026-9 |
| 1980 | 17 | 千吨 | 2026-9 |
| 1979 | 80 | 千吨 | 2026-9 |
| 1978 | 73 | 千吨 | 2026-9 |
| 1977 | 50 | 千吨 | 2026-9 |
| 1976 | 44 | 千吨 | 2026-9 |
| 1975 | 27 | 千吨 | 2026-9 |
| 1974 | 14 | 千吨 | 2026-9 |
| 1973 | 81 | 千吨 | 2026-9 |
| 1972 | 84 | 千吨 | 2026-9 |
| 1971 | 40 | 千吨 | 2026-9 |
| 1970 | 103 | 千吨 | 2026-9 |
| 1969 | 116 | 千吨 | 2026-9 |
| 1968 | 113 | 千吨 | 2026-9 |
| 1967 | 111 | 千吨 | 2026-9 |
| 1966 | 92 | 千吨 | 2026-9 |
| 1965 | 72 | 千吨 | 2026-9 |
| 1964 | 23 | 千吨 | 2026-9 |
| 1963 | 86 | 千吨 | 2026-9 |
| 1962 | 44 | 千吨 | 2026-9 |
| 1961 | 5 | 千吨 | 2026-9 |
| 1960 | 0 | 千吨 | 2026-9 |