| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1992 | 295 | 千吨 | 2026-9 |
| 1991 | 252 | 千吨 | 2026-9 |
| 1990 | 210 | 千吨 | 2026-9 |
| 1989 | 190 | 千吨 | 2026-9 |
| 1988 | 180 | 千吨 | 2026-9 |
| 1987 | 129 | 千吨 | 2026-9 |
| 1986 | 80 | 千吨 | 2026-9 |
| 1985 | 69 | 千吨 | 2026-9 |
| 1984 | 84 | 千吨 | 2026-9 |
| 1983 | 53 | 千吨 | 2026-9 |
| 1982 | 50 | 千吨 | 2026-9 |
| 1981 | 59 | 千吨 | 2026-9 |
| 1980 | 52 | 千吨 | 2026-9 |
| 1979 | 62 | 千吨 | 2026-9 |
| 1978 | 45 | 千吨 | 2026-9 |
| 1977 | 38 | 千吨 | 2026-9 |
| 1976 | 41 | 千吨 | 2026-9 |
| 1975 | 37 | 千吨 | 2026-9 |
| 1974 | 40 | 千吨 | 2026-9 |
| 1973 | 42 | 千吨 | 2026-9 |
| 1972 | 37 | 千吨 | 2026-9 |
| 1971 | 44 | 千吨 | 2026-9 |
| 1970 | 23 | 千吨 | 2026-9 |
| 1969 | 17 | 千吨 | 2026-9 |
| 1968 | 17 | 千吨 | 2026-9 |
| 1967 | 22 | 千吨 | 2026-9 |
| 1966 | 21 | 千吨 | 2026-9 |
| 1965 | 21 | 千吨 | 2026-9 |
| 1964 | 12 | 千吨 | 2026-9 |
| 1963 | 12 | 千吨 | 2026-9 |
| 1962 | 27 | 千吨 | 2026-9 |
| 1961 | 29 | 千吨 | 2026-9 |
| 1960 | 0 | 千吨 | 2026-9 |