| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 30 | 千吨 | 2026-9 |
| 1997 | 30 | 千吨 | 2026-9 |
| 1996 | 30 | 千吨 | 2026-9 |
| 1995 | 30 | 千吨 | 2026-9 |
| 1994 | 30 | 千吨 | 2026-9 |
| 1993 | 30 | 千吨 | 2026-9 |
| 1992 | 40 | 千吨 | 2026-9 |
| 1991 | 50 | 千吨 | 2026-9 |
| 1990 | 70 | 千吨 | 2026-9 |
| 1989 | 70 | 千吨 | 2026-9 |
| 1988 | 70 | 千吨 | 2026-9 |
| 1987 | 70 | 千吨 | 2026-9 |
| 1986 | 70 | 千吨 | 2026-9 |
| 1985 | 70 | 千吨 | 2026-9 |
| 1984 | 70 | 千吨 | 2026-9 |
| 1983 | 70 | 千吨 | 2026-9 |
| 1982 | 70 | 千吨 | 2026-9 |
| 1981 | 70 | 千吨 | 2026-9 |
| 1980 | 70 | 千吨 | 2026-9 |
| 1979 | 400 | 千吨 | 2026-9 |
| 1978 | 420 | 千吨 | 2026-9 |
| 1977 | 400 | 千吨 | 2026-9 |
| 1976 | 390 | 千吨 | 2026-9 |
| 1975 | 390 | 千吨 | 2026-9 |
| 1974 | 340 | 千吨 | 2026-9 |
| 1973 | 350 | 千吨 | 2026-9 |
| 1972 | 350 | 千吨 | 2026-9 |
| 1971 | 360 | 千吨 | 2026-9 |
| 1970 | 370 | 千吨 | 2026-9 |
| 1969 | 370 | 千吨 | 2026-9 |
| 1968 | 380 | 千吨 | 2026-9 |
| 1967 | 380 | 千吨 | 2026-9 |
| 1966 | 370 | 千吨 | 2026-9 |
| 1965 | 360 | 千吨 | 2026-9 |
| 1964 | 0 | 千吨 | 2026-9 |