| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 109 | 千吨 | 2026-9 |
| 1997 | 136 | 千吨 | 2026-9 |
| 1996 | 145 | 千吨 | 2026-9 |
| 1995 | 83 | 千吨 | 2026-9 |
| 1994 | 48 | 千吨 | 2026-9 |
| 1993 | 30 | 千吨 | 2026-9 |
| 1992 | 69 | 千吨 | 2026-9 |
| 1991 | 144 | 千吨 | 2026-9 |
| 1990 | 210 | 千吨 | 2026-9 |
| 1989 | 135 | 千吨 | 2026-9 |
| 1988 | 133 | 千吨 | 2026-9 |
| 1987 | 123 | 千吨 | 2026-9 |
| 1986 | 133 | 千吨 | 2026-9 |
| 1985 | 150 | 千吨 | 2026-9 |
| 1984 | 220 | 千吨 | 2026-9 |
| 1983 | 125 | 千吨 | 2026-9 |
| 1982 | 118 | 千吨 | 2026-9 |
| 1981 | 95 | 千吨 | 2026-9 |
| 1980 | 92 | 千吨 | 2026-9 |
| 1979 | 77 | 千吨 | 2026-9 |
| 1978 | 50 | 千吨 | 2026-9 |
| 1977 | 39 | 千吨 | 2026-9 |
| 1976 | 33 | 千吨 | 2026-9 |
| 1975 | 53 | 千吨 | 2026-9 |
| 1974 | 66 | 千吨 | 2026-9 |
| 1973 | 17 | 千吨 | 2026-9 |
| 1972 | 51 | 千吨 | 2026-9 |
| 1971 | 47 | 千吨 | 2026-9 |
| 1970 | 19 | 千吨 | 2026-9 |
| 1969 | 18 | 千吨 | 2026-9 |
| 1968 | 30 | 千吨 | 2026-9 |
| 1967 | 31 | 千吨 | 2026-9 |
| 1966 | 31 | 千吨 | 2026-9 |
| 1965 | 33 | 千吨 | 2026-9 |
| 1964 | 21 | 千吨 | 2026-9 |
| 1963 | 18 | 千吨 | 2026-9 |
| 1962 | 22 | 千吨 | 2026-9 |
| 1961 | 12 | 千吨 | 2026-9 |
| 1960 | 0 | 千吨 | 2026-9 |