| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 280 | 千吨 | 2026-9 |
| 1995 | 272 | 千吨 | 2026-9 |
| 1994 | 291 | 千吨 | 2026-9 |
| 1993 | 248 | 千吨 | 2026-9 |
| 1992 | 234 | 千吨 | 2026-9 |
| 1991 | 225 | 千吨 | 2026-9 |
| 1990 | 201 | 千吨 | 2026-9 |
| 1989 | 187 | 千吨 | 2026-9 |
| 1988 | 168 | 千吨 | 2026-9 |
| 1987 | 169 | 千吨 | 2026-9 |
| 1986 | 158 | 千吨 | 2026-9 |
| 1985 | 144 | 千吨 | 2026-9 |
| 1984 | 143 | 千吨 | 2026-9 |
| 1983 | 150 | 千吨 | 2026-9 |
| 1982 | 146 | 千吨 | 2026-9 |
| 1981 | 147 | 千吨 | 2026-9 |
| 1980 | 133 | 千吨 | 2026-9 |
| 1979 | 138 | 千吨 | 2026-9 |
| 1978 | 134 | 千吨 | 2026-9 |
| 1977 | 120 | 千吨 | 2026-9 |
| 1976 | 115 | 千吨 | 2026-9 |
| 1975 | 113 | 千吨 | 2026-9 |
| 1974 | 116 | 千吨 | 2026-9 |
| 1973 | 127 | 千吨 | 2026-9 |
| 1972 | 111 | 千吨 | 2026-9 |
| 1971 | 92 | 千吨 | 2026-9 |
| 1970 | 31 | 千吨 | 2026-9 |
| 1969 | 25 | 千吨 | 2026-9 |
| 1968 | 22 | 千吨 | 2026-9 |
| 1967 | 19 | 千吨 | 2026-9 |
| 1966 | 18 | 千吨 | 2026-9 |
| 1965 | 20 | 千吨 | 2026-9 |
| 1964 | 14 | 千吨 | 2026-9 |