| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 181 | 千吨 | 2026-9 |
| 1997 | 172 | 千吨 | 2026-9 |
| 1996 | 160 | 千吨 | 2026-9 |
| 1995 | 145 | 千吨 | 2026-9 |
| 1994 | 164 | 千吨 | 2026-9 |
| 1993 | 172 | 千吨 | 2026-9 |
| 1992 | 184 | 千吨 | 2026-9 |
| 1991 | 263 | 千吨 | 2026-9 |
| 1990 | 294 | 千吨 | 2026-9 |
| 1989 | 341 | 千吨 | 2026-9 |
| 1988 | 326 | 千吨 | 2026-9 |
| 1987 | 347 | 千吨 | 2026-9 |
| 1986 | 338 | 千吨 | 2026-9 |
| 1985 | 316 | 千吨 | 2026-9 |
| 1984 | 326 | 千吨 | 2026-9 |
| 1983 | 326 | 千吨 | 2026-9 |
| 1982 | 268 | 千吨 | 2026-9 |
| 1981 | 320 | 千吨 | 2026-9 |
| 1980 | 317 | 千吨 | 2026-9 |
| 1979 | 310 | 千吨 | 2026-9 |
| 1978 | 304 | 千吨 | 2026-9 |
| 1977 | 281 | 千吨 | 2026-9 |
| 1976 | 266 | 千吨 | 2026-9 |
| 1975 | 251 | 千吨 | 2026-9 |
| 1974 | 230 | 千吨 | 2026-9 |
| 1973 | 222 | 千吨 | 2026-9 |
| 1972 | 216 | 千吨 | 2026-9 |
| 1971 | 205 | 千吨 | 2026-9 |
| 1970 | 197 | 千吨 | 2026-9 |
| 1969 | 170 | 千吨 | 2026-9 |
| 1968 | 185 | 千吨 | 2026-9 |
| 1967 | 160 | 千吨 | 2026-9 |
| 1966 | 98 | 千吨 | 2026-9 |
| 1965 | 89 | 千吨 | 2026-9 |
| 1964 | 75 | 千吨 | 2026-9 |