| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 551 | 千吨 | 2026-9 |
| 1995 | 547 | 千吨 | 2026-9 |
| 1994 | 480 | 千吨 | 2026-9 |
| 1993 | 475 | 千吨 | 2026-9 |
| 1992 | 429 | 千吨 | 2026-9 |
| 1991 | 401 | 千吨 | 2026-9 |
| 1990 | 358 | 千吨 | 2026-9 |
| 1989 | 349 | 千吨 | 2026-9 |
| 1988 | 295 | 千吨 | 2026-9 |
| 1987 | 276 | 千吨 | 2026-9 |
| 1986 | 289 | 千吨 | 2026-9 |
| 1985 | 303 | 千吨 | 2026-9 |
| 1984 | 288 | 千吨 | 2026-9 |
| 1983 | 333 | 千吨 | 2026-9 |
| 1982 | 325 | 千吨 | 2026-9 |
| 1981 | 319 | 千吨 | 2026-9 |
| 1980 | 220 | 千吨 | 2026-9 |
| 1979 | 171 | 千吨 | 2026-9 |
| 1978 | 126 | 千吨 | 2026-9 |
| 1977 | 101 | 千吨 | 2026-9 |
| 1976 | 80 | 千吨 | 2026-9 |
| 1975 | 75 | 千吨 | 2026-9 |
| 1974 | 52 | 千吨 | 2026-9 |
| 1973 | 39 | 千吨 | 2026-9 |
| 1972 | 35 | 千吨 | 2026-9 |
| 1971 | 28 | 千吨 | 2026-9 |
| 1970 | 26 | 千吨 | 2026-9 |
| 1969 | 14 | 千吨 | 2026-9 |
| 1968 | 12 | 千吨 | 2026-9 |
| 1967 | 11 | 千吨 | 2026-9 |
| 1966 | 16 | 千吨 | 2026-9 |
| 1965 | 17 | 千吨 | 2026-9 |
| 1964 | 17 | 千吨 | 2026-9 |