| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 32 | 千吨 | 2026-9 |
| 1995 | 33 | 千吨 | 2026-9 |
| 1994 | 34 | 千吨 | 2026-9 |
| 1993 | 42 | 千吨 | 2026-9 |
| 1992 | 39 | 千吨 | 2026-9 |
| 1991 | 42 | 千吨 | 2026-9 |
| 1990 | 57 | 千吨 | 2026-9 |
| 1989 | 48 | 千吨 | 2026-9 |
| 1988 | 63 | 千吨 | 2026-9 |
| 1987 | 70 | 千吨 | 2026-9 |
| 1986 | 72 | 千吨 | 2026-9 |
| 1985 | 80 | 千吨 | 2026-9 |
| 1984 | 80 | 千吨 | 2026-9 |
| 1983 | 76 | 千吨 | 2026-9 |
| 1982 | 72 | 千吨 | 2026-9 |
| 1981 | 66 | 千吨 | 2026-9 |
| 1980 | 68 | 千吨 | 2026-9 |
| 1979 | 67 | 千吨 | 2026-9 |
| 1978 | 65 | 千吨 | 2026-9 |
| 1977 | 64 | 千吨 | 2026-9 |
| 1976 | 64 | 千吨 | 2026-9 |
| 1975 | 57 | 千吨 | 2026-9 |
| 1974 | 61 | 千吨 | 2026-9 |
| 1973 | 56 | 千吨 | 2026-9 |
| 1972 | 59 | 千吨 | 2026-9 |
| 1971 | 50 | 千吨 | 2026-9 |
| 1970 | 61 | 千吨 | 2026-9 |
| 1969 | 71 | 千吨 | 2026-9 |
| 1968 | 74 | 千吨 | 2026-9 |
| 1967 | 76 | 千吨 | 2026-9 |
| 1966 | 83 | 千吨 | 2026-9 |
| 1965 | 85 | 千吨 | 2026-9 |
| 1964 | 83 | 千吨 | 2026-9 |