| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 195 | 千吨 | 2026-9 |
| 1997 | 186 | 千吨 | 2026-9 |
| 1996 | 176 | 千吨 | 2026-9 |
| 1995 | 171 | 千吨 | 2026-9 |
| 1994 | 180 | 千吨 | 2026-9 |
| 1993 | 208 | 千吨 | 2026-9 |
| 1992 | 204 | 千吨 | 2026-9 |
| 1991 | 275 | 千吨 | 2026-9 |
| 1990 | 327 | 千吨 | 2026-9 |
| 1989 | 364 | 千吨 | 2026-9 |
| 1988 | 349 | 千吨 | 2026-9 |
| 1987 | 369 | 千吨 | 2026-9 |
| 1986 | 381 | 千吨 | 2026-9 |
| 1985 | 368 | 千吨 | 2026-9 |
| 1984 | 390 | 千吨 | 2026-9 |
| 1983 | 374 | 千吨 | 2026-9 |
| 1982 | 317 | 千吨 | 2026-9 |
| 1981 | 334 | 千吨 | 2026-9 |
| 1980 | 322 | 千吨 | 2026-9 |
| 1979 | 320 | 千吨 | 2026-9 |
| 1978 | 320 | 千吨 | 2026-9 |
| 1977 | 304 | 千吨 | 2026-9 |
| 1976 | 287 | 千吨 | 2026-9 |
| 1975 | 280 | 千吨 | 2026-9 |
| 1974 | 278 | 千吨 | 2026-9 |
| 1973 | 255 | 千吨 | 2026-9 |
| 1972 | 227 | 千吨 | 2026-9 |
| 1971 | 216 | 千吨 | 2026-9 |
| 1970 | 219 | 千吨 | 2026-9 |
| 1969 | 188 | 千吨 | 2026-9 |
| 1968 | 190 | 千吨 | 2026-9 |
| 1967 | 188 | 千吨 | 2026-9 |
| 1966 | 118 | 千吨 | 2026-9 |
| 1965 | 107 | 千吨 | 2026-9 |
| 1964 | 95 | 千吨 | 2026-9 |