| 年度 | 数值 | 单位 | 发布日期 |
| 1992 | 320 | 千吨 | 2026-9 |
| 1991 | 294 | 千吨 | 2026-9 |
| 1990 | 259 | 千吨 | 2026-9 |
| 1989 | 271 | 千吨 | 2026-9 |
| 1988 | 292 | 千吨 | 2026-9 |
| 1987 | 307 | 千吨 | 2026-9 |
| 1986 | 323 | 千吨 | 2026-9 |
| 1985 | 298 | 千吨 | 2026-9 |
| 1984 | 295 | 千吨 | 2026-9 |
| 1983 | 269 | 千吨 | 2026-9 |
| 1982 | 251 | 千吨 | 2026-9 |
| 1981 | 256 | 千吨 | 2026-9 |
| 1980 | 261 | 千吨 | 2026-9 |
| 1979 | 283 | 千吨 | 2026-9 |
| 1978 | 305 | 千吨 | 2026-9 |
| 1977 | 310 | 千吨 | 2026-9 |
| 1976 | 283 | 千吨 | 2026-9 |
| 1975 | 273 | 千吨 | 2026-9 |
| 1974 | 239 | 千吨 | 2026-9 |
| 1973 | 185 | 千吨 | 2026-9 |
| 1972 | 172 | 千吨 | 2026-9 |
| 1971 | 197 | 千吨 | 2026-9 |
| 1970 | 194 | 千吨 | 2026-9 |
| 1969 | 196 | 千吨 | 2026-9 |
| 1968 | 208 | 千吨 | 2026-9 |
| 1967 | 220 | 千吨 | 2026-9 |
| 1966 | 195 | 千吨 | 2026-9 |
| 1965 | 154 | 千吨 | 2026-9 |
| 1964 | 157 | 千吨 | 2026-9 |
| 1963 | 180 | 千吨 | 2026-9 |
| 1962 | 178 | 千吨 | 2026-9 |
| 1961 | 141 | 千吨 | 2026-9 |
| 1960 | 156 | 千吨 | 2026-9 |