| 年度 | 数值 | 单位 | 发布日期 |
| 1992 | 350 | 千吨 | 2026-9 |
| 1991 | 334 | 千吨 | 2026-9 |
| 1990 | 348 | 千吨 | 2026-9 |
| 1989 | 337 | 千吨 | 2026-9 |
| 1988 | 333 | 千吨 | 2026-9 |
| 1987 | 340 | 千吨 | 2026-9 |
| 1986 | 325 | 千吨 | 2026-9 |
| 1985 | 290 | 千吨 | 2026-9 |
| 1984 | 264 | 千吨 | 2026-9 |
| 1983 | 274 | 千吨 | 2026-9 |
| 1982 | 253 | 千吨 | 2026-9 |
| 1981 | 263 | 千吨 | 2026-9 |
| 1980 | 288 | 千吨 | 2026-9 |
| 1979 | 261 | 千吨 | 2026-9 |
| 1978 | 249 | 千吨 | 2026-9 |
| 1977 | 214 | 千吨 | 2026-9 |
| 1976 | 215 | 千吨 | 2026-9 |
| 1975 | 189 | 千吨 | 2026-9 |
| 1974 | 181 | 千吨 | 2026-9 |
| 1973 | 185 | 千吨 | 2026-9 |
| 1972 | 197 | 千吨 | 2026-9 |
| 1971 | 180 | 千吨 | 2026-9 |
| 1970 | 195 | 千吨 | 2026-9 |
| 1969 | 170 | 千吨 | 2026-9 |
| 1968 | 174 | 千吨 | 2026-9 |
| 1967 | 202 | 千吨 | 2026-9 |
| 1966 | 191 | 千吨 | 2026-9 |
| 1965 | 190 | 千吨 | 2026-9 |
| 1964 | 192 | 千吨 | 2026-9 |
| 1963 | 182 | 千吨 | 2026-9 |
| 1962 | 189 | 千吨 | 2026-9 |
| 1961 | 195 | 千吨 | 2026-9 |
| 1960 | 192 | 千吨 | 2026-9 |