| 年度 | 数值 | 单位 | 发布日期 |
| 1996 | 97 | 千吨 | 2026-9 |
| 1995 | 102 | 千吨 | 2026-9 |
| 1994 | 119 | 千吨 | 2026-9 |
| 1993 | 125 | 千吨 | 2026-9 |
| 1992 | 122 | 千吨 | 2026-9 |
| 1991 | 125 | 千吨 | 2026-9 |
| 1990 | 82 | 千吨 | 2026-9 |
| 1989 | 117 | 千吨 | 2026-9 |
| 1988 | 173 | 千吨 | 2026-9 |
| 1987 | 151 | 千吨 | 2026-9 |
| 1986 | 132 | 千吨 | 2026-9 |
| 1985 | 139 | 千吨 | 2026-9 |
| 1984 | 120 | 千吨 | 2026-9 |
| 1983 | 111 | 千吨 | 2026-9 |
| 1982 | 165 | 千吨 | 2026-9 |
| 1981 | 143 | 千吨 | 2026-9 |
| 1980 | 124 | 千吨 | 2026-9 |
| 1979 | 114 | 千吨 | 2026-9 |
| 1978 | 112 | 千吨 | 2026-9 |
| 1977 | 87 | 千吨 | 2026-9 |
| 1976 | 78 | 千吨 | 2026-9 |
| 1975 | 70 | 千吨 | 2026-9 |
| 1974 | 83 | 千吨 | 2026-9 |
| 1973 | 95 | 千吨 | 2026-9 |
| 1972 | 32 | 千吨 | 2026-9 |
| 1971 | 29 | 千吨 | 2026-9 |
| 1970 | 40 | 千吨 | 2026-9 |
| 1969 | 14 | 千吨 | 2026-9 |
| 1968 | 24 | 千吨 | 2026-9 |
| 1967 | 27 | 千吨 | 2026-9 |
| 1966 | 19 | 千吨 | 2026-9 |
| 1965 | 3 | 千吨 | 2026-9 |
| 1964 | 16 | 千吨 | 2026-9 |