| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 183 | 千吨 | 2026-9 |
| 1997 | 178 | 千吨 | 2026-9 |
| 1996 | 160 | 千吨 | 2026-9 |
| 1995 | 163 | 千吨 | 2026-9 |
| 1994 | 160 | 千吨 | 2026-9 |
| 1993 | 180 | 千吨 | 2026-9 |
| 1992 | 180 | 千吨 | 2026-9 |
| 1991 | 220 | 千吨 | 2026-9 |
| 1990 | 300 | 千吨 | 2026-9 |
| 1989 | 325 | 千吨 | 2026-9 |
| 1988 | 293 | 千吨 | 2026-9 |
| 1987 | 293 | 千吨 | 2026-9 |
| 1986 | 290 | 千吨 | 2026-9 |
| 1985 | 308 | 千吨 | 2026-9 |
| 1984 | 322 | 千吨 | 2026-9 |
| 1983 | 300 | 千吨 | 2026-9 |
| 1982 | 265 | 千吨 | 2026-9 |
| 1981 | 260 | 千吨 | 2026-9 |
| 1980 | 294 | 千吨 | 2026-9 |
| 1979 | 293 | 千吨 | 2026-9 |
| 1978 | 294 | 千吨 | 2026-9 |
| 1977 | 293 | 千吨 | 2026-9 |
| 1976 | 266 | 千吨 | 2026-9 |
| 1975 | 251 | 千吨 | 2026-9 |
| 1974 | 268 | 千吨 | 2026-9 |
| 1973 | 253 | 千吨 | 2026-9 |
| 1972 | 220 | 千吨 | 2026-9 |
| 1971 | 198 | 千吨 | 2026-9 |
| 1970 | 197 | 千吨 | 2026-9 |
| 1969 | 174 | 千吨 | 2026-9 |
| 1968 | 185 | 千吨 | 2026-9 |
| 1967 | 180 | 千吨 | 2026-9 |
| 1966 | 118 | 千吨 | 2026-9 |
| 1965 | 105 | 千吨 | 2026-9 |
| 1964 | 87 | 千吨 | 2026-9 |