| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 20 | 千吨 | 2026-9 |
| 1995 | 5 | 千吨 | 2026-9 |
| 1994 | 6 | 千吨 | 2026-9 |
| 1993 | 4 | 千吨 | 2026-9 |
| 1992 | 4 | 千吨 | 2026-9 |
| 1991 | 6 | 千吨 | 2026-9 |
| 1990 | 6 | 千吨 | 2026-9 |
| 1989 | 17 | 千吨 | 2026-9 |
| 1988 | 66 | 千吨 | 2026-9 |
| 1987 | 84 | 千吨 | 2026-9 |
| 1986 | 82 | 千吨 | 2026-9 |
| 1985 | 93 | 千吨 | 2026-9 |
| 1984 | 95 | 千吨 | 2026-9 |
| 1983 | 95 | 千吨 | 2026-9 |
| 1982 | 88 | 千吨 | 2026-9 |
| 1981 | 93 | 千吨 | 2026-9 |
| 1980 | 97 | 千吨 | 2026-9 |
| 1979 | 94 | 千吨 | 2026-9 |
| 1978 | 79 | 千吨 | 2026-9 |
| 1977 | 82 | 千吨 | 2026-9 |
| 1976 | 90 | 千吨 | 2026-9 |
| 1975 | 69 | 千吨 | 2026-9 |
| 1974 | 60 | 千吨 | 2026-9 |
| 1973 | 76 | 千吨 | 2026-9 |
| 1972 | 64 | 千吨 | 2026-9 |
| 1971 | 59 | 千吨 | 2026-9 |
| 1970 | 53 | 千吨 | 2026-9 |
| 1969 | 63 | 千吨 | 2026-9 |
| 1968 | 55 | 千吨 | 2026-9 |
| 1967 | 48 | 千吨 | 2026-9 |
| 1966 | 32 | 千吨 | 2026-9 |
| 1965 | 27 | 千吨 | 2026-9 |
| 1964 | 33 | 千吨 | 2026-9 |