| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 518 | 千吨 | 2026-9 |
| 1995 | 549 | 千吨 | 2026-9 |
| 1994 | 171 | 千吨 | 2026-9 |
| 1993 | 405 | 千吨 | 2026-9 |
| 1992 | 170 | 千吨 | 2026-9 |
| 1991 | 203 | 千吨 | 2026-9 |
| 1990 | 154 | 千吨 | 2026-9 |
| 1989 | 109 | 千吨 | 2026-9 |
| 1988 | 73 | 千吨 | 2026-9 |
| 1987 | 70 | 千吨 | 2026-9 |
| 1986 | 75 | 千吨 | 2026-9 |
| 1985 | 151 | 千吨 | 2026-9 |
| 1984 | 321 | 千吨 | 2026-9 |
| 1983 | 165 | 千吨 | 2026-9 |
| 1982 | 57 | 千吨 | 2026-9 |
| 1981 | 43 | 千吨 | 2026-9 |
| 1980 | 34 | 千吨 | 2026-9 |
| 1979 | 33 | 千吨 | 2026-9 |
| 1978 | 27 | 千吨 | 2026-9 |
| 1977 | 25 | 千吨 | 2026-9 |
| 1976 | 28 | 千吨 | 2026-9 |
| 1975 | 24 | 千吨 | 2026-9 |
| 1974 | 26 | 千吨 | 2026-9 |
| 1973 | 38 | 千吨 | 2026-9 |
| 1972 | 62 | 千吨 | 2026-9 |
| 1971 | 35 | 千吨 | 2026-9 |
| 1970 | 12 | 千吨 | 2026-9 |
| 1969 | 0 | 千吨 | 2026-9 |
| 1968 | 0 | 千吨 | 2026-9 |
| 1967 | 0 | 千吨 | 2026-9 |
| 1966 | 0 | 千吨 | 2026-9 |
| 1965 | 0 | 千吨 | 2026-9 |
| 1964 | 0 | 千吨 | 2026-9 |