| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 251 | 千吨 | 2026-9 |
| 1997 | 246 | 千吨 | 2026-9 |
| 1996 | 231 | 千吨 | 2026-9 |
| 1995 | 265 | 千吨 | 2026-9 |
| 1994 | 274 | 千吨 | 2026-9 |
| 1993 | 268 | 千吨 | 2026-9 |
| 1992 | 312 | 千吨 | 2026-9 |
| 1991 | 357 | 千吨 | 2026-9 |
| 1990 | 403 | 千吨 | 2026-9 |
| 1989 | 408 | 千吨 | 2026-9 |
| 1988 | 399 | 千吨 | 2026-9 |
| 1987 | 412 | 千吨 | 2026-9 |
| 1986 | 414 | 千吨 | 2026-9 |
| 1985 | 380 | 千吨 | 2026-9 |
| 1984 | 381 | 千吨 | 2026-9 |
| 1983 | 384 | 千吨 | 2026-9 |
| 1982 | 368 | 千吨 | 2026-9 |
| 1981 | 373 | 千吨 | 2026-9 |
| 1980 | 361 | 千吨 | 2026-9 |
| 1979 | 341 | 千吨 | 2026-9 |
| 1978 | 305 | 千吨 | 2026-9 |
| 1977 | 306 | 千吨 | 2026-9 |
| 1976 | 349 | 千吨 | 2026-9 |
| 1975 | 316 | 千吨 | 2026-9 |
| 1974 | 225 | 千吨 | 2026-9 |
| 1973 | 226 | 千吨 | 2026-9 |
| 1972 | 161 | 千吨 | 2026-9 |
| 1971 | 134 | 千吨 | 2026-9 |
| 1970 | 113 | 千吨 | 2026-9 |
| 1969 | 120 | 千吨 | 2026-9 |
| 1968 | 142 | 千吨 | 2026-9 |
| 1967 | 140 | 千吨 | 2026-9 |
| 1966 | 131 | 千吨 | 2026-9 |
| 1965 | 143 | 千吨 | 2026-9 |
| 1964 | 108 | 千吨 | 2026-9 |
| 1963 | 94 | 千吨 | 2026-9 |
| 1962 | 106 | 千吨 | 2026-9 |
| 1961 | 106 | 千吨 | 2026-9 |
| 1960 | 109 | 千吨 | 2026-9 |