| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 55 | 千吨 | 2026-9 |
| 1995 | 52 | 千吨 | 2026-9 |
| 1994 | 50 | 千吨 | 2026-9 |
| 1993 | 52 | 千吨 | 2026-9 |
| 1992 | 54 | 千吨 | 2026-9 |
| 1991 | 75 | 千吨 | 2026-9 |
| 1990 | 94 | 千吨 | 2026-9 |
| 1989 | 98 | 千吨 | 2026-9 |
| 1988 | 83 | 千吨 | 2026-9 |
| 1987 | 99 | 千吨 | 2026-9 |
| 1986 | 138 | 千吨 | 2026-9 |
| 1985 | 128 | 千吨 | 2026-9 |
| 1984 | 131 | 千吨 | 2026-9 |
| 1983 | 161 | 千吨 | 2026-9 |
| 1982 | 140 | 千吨 | 2026-9 |
| 1981 | 126 | 千吨 | 2026-9 |
| 1980 | 126 | 千吨 | 2026-9 |
| 1979 | 144 | 千吨 | 2026-9 |
| 1978 | 145 | 千吨 | 2026-9 |
| 1977 | 116 | 千吨 | 2026-9 |
| 1976 | 125 | 千吨 | 2026-9 |
| 1975 | 132 | 千吨 | 2026-9 |
| 1974 | 128 | 千吨 | 2026-9 |
| 1973 | 116 | 千吨 | 2026-9 |
| 1972 | 119 | 千吨 | 2026-9 |
| 1971 | 98 | 千吨 | 2026-9 |
| 1970 | 109 | 千吨 | 2026-9 |
| 1969 | 119 | 千吨 | 2026-9 |
| 1968 | 126 | 千吨 | 2026-9 |
| 1967 | 95 | 千吨 | 2026-9 |
| 1966 | 81 | 千吨 | 2026-9 |
| 1965 | 63 | 千吨 | 2026-9 |
| 1964 | 43 | 千吨 | 2026-9 |